Yet Another Cycling Forum

Off Topic => The Pub => Topic started by: Basil on May 08, 2018, 10:31:27 pm

Title: A Random Thread For Astronomical Stuff.
Post by: Basil on May 08, 2018, 10:31:27 pm
Not sure if we need this thread.   We'll see how it goes.
Anyway,  all I wanted to say was; blimey, have you seen Jupiter tonight?   
Yo big boy.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Jaded on May 08, 2018, 11:12:27 pm
Yes, indeed. Shame my telescope is in a different country.  >:(
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 09, 2018, 12:59:17 am
David will be out imaging intermittently.
His friend Martin Lewis has Tweeted this from last Saturday.
(https://pbs.twimg.com/media/Dcs-zHyX4AIGndD.jpg:large)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on May 09, 2018, 07:24:42 am
Wow!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on May 09, 2018, 07:28:00 am
Good going with a Dob. Has he got a drive on it?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 09, 2018, 04:15:17 pm
David tells me Martin has made a drive for it.

I think Martin is @sky_inspector on Twitter.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on May 09, 2018, 11:17:21 pm
Did I read that right? 444mm Dobsonian? That is nigh on 17 1/2 inches in old money. A weighty beast :thumbsup:
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 09, 2018, 11:46:17 pm
Did I read that right? 444mm Dobsonian? That is nigh on 17 1/2 inches in old money. A weighty beast :thumbsup:

That is correct. He calls it 18 inches...

Martin is rather bright...
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on May 10, 2018, 07:29:46 am
I got into the ATM schtick around Y2K and built a 12". Thought about motorising it with scrounged stepping motors from old printers, but the gearing defeated me.

Once saw in a mag a twin 17" Cassegrain someone had built because he had dodgy eyes. That would be wonderful to have. Along with the crane & pickup to take it to a dark-sky site.

My Dob hasn't been used for years due to light pollution. It's just an ornament these days.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 10, 2018, 10:50:12 am
David will be building a 500mm Cassegrain at some point.
He's had the mirrors a while and bought a suitable tube. The observatory extension and cell are awaited, as is the  re-aluminising of the optics.

David has managed some good images from light-polluted Edgware but the new LED street light might defeat him.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Torslanda on May 10, 2018, 12:18:59 pm
Slightly OT, we're still trying to find a home for my Dad's 6" Gregorian reflector. Admittedly it's more of a display piece these days but we're open to reasonable offers.

You will need plenty of room as it's around 8 feet tall...
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 11, 2018, 07:21:43 am
David's Jupiter from last night.
(https://scontent.flhr2-1.fna.fbcdn.net/v/t1.0-9/32188472_1131610223645268_2730911975423868928_n.jpg?_nc_cat=0&oh=d95be67b63db679bf576863a503865f5&oe=5B567651)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 11, 2018, 07:59:29 am
The OT Gallery has various astronomical threads, from aurorae to solar eclipse in America last year...
Title: Re: A Random Thread For Astronomical Stuff.
Post by: PaulR on May 11, 2018, 07:45:38 pm
I hope to find time this weekend to review the footage I took of the Ganymede transit last weekend.

I am rather hankering after a sizeable newtonian now that I live under reasonably dark skies.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on May 13, 2018, 10:36:58 pm
Apparently it's 'Space Season' on BBC 4.  No idea if that means a week,  a day, or what.
Ooh goody.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on May 13, 2018, 11:11:02 pm
Just watched The Sky At Night. The data coming out of Gaia is stunning!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 14, 2018, 12:22:32 pm
David imaged the Whirlpool Galaxy this morning.
(https://scontent.flhr2-1.fna.fbcdn.net/v/t1.0-9/32411166_1133538240119133_2573257839250243584_o.jpg?_nc_cat=0&_nc_eui2=AeE2_lmRnoRPFCb6_7BHSZ8ScwfCdxG9ik-PSxS2qXLxQzUsARU4i0lhCBB0QBEKxw_x_DLSmuK9T9TzmZ_JAOj81mSP3DGDBGj8s1Mj3mcF9g&oh=6e700e9bbf3daefb580722591f78f18b&oe=5B5357DB)
 
so we've not had breakfast yet...
Title: Re: A Random Thread For Astronomical Stuff.
Post by: PaulR on May 15, 2018, 03:03:28 pm
Lovely whirlpool!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on May 18, 2018, 10:29:32 am
David imaged the Whirlpool Galaxy this morning.
(https://scontent.flhr2-1.fna.fbcdn.net/v/t1.0-9/32411166_1133538240119133_2573257839250243584_o.jpg?_nc_cat=0&_nc_eui2=AeE2_lmRnoRPFCb6_7BHSZ8ScwfCdxG9ik-PSxS2qXLxQzUsARU4i0lhCBB0QBEKxw_x_DLSmuK9T9TzmZ_JAOj81mSP3DGDBGj8s1Mj3mcF9g&oh=6e700e9bbf3daefb580722591f78f18b&oe=5B5357DB)
 
so we've not had breakfast yet...

David has the means. I therfore declare him Git!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Tim Hall on May 22, 2018, 10:10:00 pm
I just peered out of my window as I drew the curtains. ISS at mag -3 going overhead.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on May 23, 2018, 07:52:20 am
He'd have needed a Schmidt here last night, a Newtonian would have filled up with rain.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Torslanda on May 23, 2018, 10:43:39 am
Slightly OT, we're still trying to find a home for my Dad's 6" Gregorian reflector. Admittedly it's more of a display piece these days but we're open to reasonable offers.

You will need plenty of room as it's around 8 feet tall...

Woo and verily hoo! Sold!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on May 23, 2018, 12:59:36 pm
Good price?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on May 23, 2018, 02:45:19 pm
Slightly OT, we're still trying to find a home for my Dad's 6" Gregorian reflector. Admittedly it's more of a display piece these days but we're open to reasonable offers.

You will need plenty of room as it's around 8 feet tall...

Woo and verily hoo! Sold!

Great stuff!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Torslanda on May 23, 2018, 02:58:01 pm
Good price?

Dunno. It's something else I don't have to worry about . . .
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Jaded on May 28, 2018, 01:46:06 am
Jupiter and the moon.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on May 28, 2018, 08:05:54 am
Through cloud here. Would have made a good whodunnit cover.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on June 03, 2018, 04:09:04 pm
Martin's latest Jupiter:

(https://pbs.twimg.com/media/DexgiGAX0AAt4KL.jpg:large)

(Search did not seem to find this thread. Don't know why...)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on July 01, 2018, 10:50:38 am
Lovely view of the Moon and Mars in conjunction this morning, at <godawful> a.m. when the noise of the wind battering the shutters woke me up.

Can't remember if <godawful> was UTC or local time.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on July 27, 2018, 06:13:08 pm
Bah.   Completely overcast here.  No Luna eclipse for me.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on July 27, 2018, 07:32:52 pm
You just need a good sightline to the horizon in the south-east in two hours time.

You might still get this.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: SoreTween on July 27, 2018, 09:52:37 pm
Another page in vol 2 of astronomical disappointments in glos.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Efrogwr on July 27, 2018, 10:41:39 pm
In the last twenty years we've seen threeastronomical events that were forecast to be interesting. It's overcast again this evening; for the first time in weeks!

Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on July 27, 2018, 10:57:23 pm
The 2004 Transit of Venus was started at Audax o'clock.
Our bedroom faces north-east and we had lovely clear skies, getting good images without leaving our boudoir.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Kim on July 27, 2018, 11:03:10 pm
All cloud here when I looked.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on July 28, 2018, 07:03:07 am
Had a good view of it, although it was just rising out of the murk. Yup, it looked like an eclipse all right.

Fed up with the press & like ignorami using the term "Blood Moon" in hushed tones as if it were something out of the Apocalypse of John the Divine. It's just the Bloody Moon with a bit of grimy shadow on it.

Far more spectacular was the brilliant flare of light that preceded a faint trail with a red dot at the head of it that I saw when I looked north to see if Polaris was out yet. Meteor, or else biggish junk re-entering, probably.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Efrogwr on July 28, 2018, 11:06:42 am
In the last twenty years we've seen threeastronomical events that were forecast to be interesting. It's overcast again this evening; for the first time in weeks!

Last night, soon after the eclipse was over, the cloud cleared...
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on July 28, 2018, 12:17:00 pm
Fed up with the press & like ignorami using the term "Blood Moon" in hushed tones as if it were something out of the Apocalypse of John the Divine. It's just the Bloody Moon with a bit of grimy shadow on it.

My David rants/grumbles about this too!

You are not alone!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on July 28, 2018, 12:50:22 pm
Ah, solace in numbers. Cheers to your David.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Kim on July 28, 2018, 01:10:52 pm
The way I see it, referring to it as a 'blood moon' is perfectly acceptable iff:

a) You're a member of a society that knows nothing of astronomy or the scientific basis for the phenomenon.
b) You're a character in a vampire story.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on August 08, 2018, 01:21:29 pm
Meteor last night, lovely thick bright trail. About SSE, south of Mars, around 10:45 pm so probably not a Perseid.

 Mrs T42 was jealous.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 08, 2018, 08:51:32 pm
Looking forward to the Perseids this weekend.  Moon good. Buggers off early evening.  Fingers crossed for clear skies.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: orienteer on August 08, 2018, 10:42:17 pm
Anyone else see the Horizon programme about the Juno explorer's expedition to Saturn last night?
Found it quite fascinating, especially the discovery that Saturn's core is rocky with liquid metallic hydrogen surrounding it, due to the immense pressure.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 10, 2018, 10:43:26 pm
It's a lovely night so I popped out for a while to see if I could see any meteorites.  Nope nothing after 15 minutes.  I know that the peak is Sat/Sun but I was hoping for something.
Perfect viewing conditions.  No moon, the track of the milky way visible, mars, clearly a disk to the naked eye, glowering in the south east where it has just risen over the Pencader hill.

Hmm.  Nice wine this.

Obv Saturday and Sunday nights will be wet with 10/10 cloud cover.  Bah!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on August 10, 2018, 11:38:40 pm
David's friends have just arrived to look at the skies...
It's clear here right now.

ETA They saw quite a lot and left at 0210.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on August 11, 2018, 07:50:10 am
Broken cloud here, just the odd star. Didn't think it worth getting up early.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 11, 2018, 06:57:00 pm

Obv Saturday and Sunday nights will be wet with 10/10 cloud cover.  Bah!

Indeed bah!  :(
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Efrogwr on August 11, 2018, 08:49:31 pm

Obv Saturday and Sunday nights will be wet with 10/10 cloud cover.  Bah!

Indeed bah!  :(

It's crap in Snowdonia, too.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Jaded on August 11, 2018, 10:21:04 pm
We have cloud. And midge.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Thor on August 11, 2018, 10:46:02 pm
Anyone else see the Horizon programme about the Juno explorer's expedition to Saturn last night?
Found it quite fascinating, especially the discovery that Saturn's core is rocky with liquid metallic hydrogen surrounding it, due to the immense pressure.

Wasn't that Jupiter?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: orienteer on August 12, 2018, 08:57:04 am
Yes, Jupiter! I always muddle those!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on August 12, 2018, 09:01:17 am
Was up around 3 am: clear sky but no Perseids. Went back to sleep, woke up when it was light. :(
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on August 12, 2018, 12:26:41 pm
Perseid maximum is tonight thobut.

Apparently, a small Solar Eclipse was just observable yesterday from Stornoway, 19 years to the day since totality in Cornwall.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on August 12, 2018, 01:31:12 pm
Remarked yesterday to Mrs T42 that it was the anniversary of our eclipse party in 1999.  We were right in the centre of the shadow in 1999. I had a scope set up to project & another with a thick Mylar filter for direct viewing. It was cloudy, but the cloud broke up about half an hour in advance and we saw it all.

Funny: you can be as rational as you like, but a total eclipse is still kinda spooky.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 12, 2018, 03:08:11 pm
Yes.  I cycle toured down to South Devon which was within the area of totality.  You're right.  It is spooky.  The speed that the darkness fades in id just so un natural.

Helly, wasn't it the thirteenth?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: BrianI on August 12, 2018, 03:17:21 pm
Perseid maximum is tonight thobut.
.
Cloudy with a chance of Triffids tomorrow?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 12, 2018, 08:11:58 pm
*Sings*

"set the controls for the heart of the sun"
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on August 13, 2018, 08:51:05 am
Yes.  I cycle toured down to South Devon which was within the area of totality.  You're right.  It is spooky.  The speed that the darkness fades in id just so un natural.

Helly, wasn't it the thirteenth?

Nope, it was the 11th.

We saw a few meteors last night a couple of hours after sunset.  Had another gander towards 3 am but Perseus was down the end of a brightly-lit street and looking that way was uncomfortable. Nowt visible. I'm always hoping for something on the Chelyabinsk scale, especially since the neighbours' modern monstrosity has great big plate glass windows.  I should think that Swift-Tuttle's débris has been pretty well swept up by now though.

Mrs T42 saw and heard a big one years ago in Uganda, which her parents poo-pooed until it was in the papers.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Jaded on August 13, 2018, 09:14:50 am
I could have seen the 11th one if it hadn’t been cloudy, would also have seen the Perseids, but it has been unremitting cloud for a few days.

In terms of anniversaries, it is nearly a year since this.

(http://www.alfiecat.co.uk/yetacf/DSC_3819%20%281%29.jpg)

 :)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: cycleman on August 13, 2018, 07:46:29 pm
*Sings*

"set the controls for the heart of the sun"
[/quote
I note that the sun rocket probe has been launched yesterday  so I hope the controls are set right  :D]
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on September 02, 2018, 08:49:07 am
Oh, very yes:

(https://imgs.xkcd.com/comics/eclipse_review.png) (https://xkcd.com/1880/)

Needs a dot for "blood moon".
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on September 21, 2018, 11:46:42 am
I have got me a new camera- Sony a3600 mirrorless. This beauty allows me to utilise the Sony Playmemories mobile app on my phone and iPad. As a result, I can link the device to the camera using the camera generated wi fi hub and veiw the image live. For astro stuff, this makes achieveing sharp focu so much easier.
My first couple of astr efforts are below. Both shot at around 21:15 on 17/09/2018, ISO 1600. The first at 1/1600 sec, the second at 1/320 sec.

(https://farm2.staticflickr.com/1965/29883257787_109651a4a8_k.jpg) (https://flic.kr/p/MwFvqx)DSC00171 (https://flic.kr/p/MwFvqx) by Matt Langridge (https://www.flickr.com/photos/59790646@N05/), on Flickr

(https://farm2.staticflickr.com/1919/44100200794_66ed5503a6_k.jpg) (https://flic.kr/p/2abZ4gy)DSC00173 (https://flic.kr/p/2abZ4gy) by Matt Langridge (https://www.flickr.com/photos/59790646@N05/), on Flickr
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on September 21, 2018, 01:19:27 pm
Very nice.  Makes me want to go out and spend money I haven't got.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on September 24, 2018, 11:15:19 am
Tried the new camera out on the newly driven mount last night going interstellar.

The back story is that I bought a drive kit for the Skywatcher EQ3/2 mount I got with my scope along with a polar alignment scope. Polar alignment (aligning the Right Ascension axis of the scope with the polar axis of Earth) is essential for trail free long exposures. To achieve this, you utilise a polar alignment scope which sits in the axis of the mount. The scope has a reticle which is lined up with Polaris depending on the year etc. Before attemting anything you have to ensure that the polar scope is accurately aligned to the axis of the mount.

Aligning a polar scope to a mount can be akin to herding cats. Idealy done at night and using Polaris as your target you set up and level the mount, with the elevation of the mount consistent with the lattitude of your location (51 and a tad degrees for me) and ensure that the mount is correctly orientated re North. You then put the centre of the reticle on your target and rotate them mount around the RA axis 90 degrees (either way) or 180 degrees depending on your favourite tame experts advice. Look through the polar scope and note the distance and direction that the target has wandered from the reticle centre. Now make adjustments to the 3 grub screws in the polar scope (1.5mm allan key required on my scope) to shift the reticle half way back towards the target. Then using the mount fine adjustment screws, recentre the reticle on the target. Rotate back to start point and repeat until the target stays in the centre at both points. Alignment has been achieved. Bearing in mind that Polaris is quite high in the sky (find the Big Dipper- the two stars that form the 'wall' of the bowl furthes trom the handle form guide stars, a line drawn through these two stars, from bottom of bowl to top, extending about twice the distance between the two stars points almost exactly at Polaris), looking through the polar scope every minute or two for the eons it seems to take is neck breaking. Add in the fact that my polar scope isn't illuminated so red torch use at the objective end was required AND the buggeration factor of very small, dairy product related grub screws at night meant that I was about ready to kill someone by the time I had finish. 3 attempts it took >:( Cat herding? pice of cake compared to that.

Once you have the polar scope aligned you are ready to go. When setting up, you have to do your polar alignment. Not as awkward as polar scope alignment but still a bit of a faff. Deploy mount, level mount and ensure it is North aligned. Grovel on knees and check position of Polaris in relation to polar scope reticle. Adjust and repeat until aligned.

Next you mount your scope to the tripod and then notice that the cloud has crept in and covered your intended target :facepalm:

Retire to the domicile and watch an episode of The West Wing and sup an hot coffee.

The cloud did eventually clear so out I went and set the camera and iPad up. My first target was M31 The Andromeda Galaxy-

(https://farm2.staticflickr.com/1929/44832181272_3fcc74a775_k.jpg) (https://flic.kr/p/2biEDyC)DSC00176 (https://flic.kr/p/2biEDyC) by Matt Langridge (https://www.flickr.com/photos/59790646@N05/), on Flickr
ISO1600 single frme 30 seconds

(https://farm2.staticflickr.com/1940/44832179452_db69b42d34_k.jpg) (https://flic.kr/p/2biED2f)DSC00179 (https://flic.kr/p/2biED2f) by Matt Langridge (https://www.flickr.com/photos/59790646@N05/), on Flickr
ISO1600 single frame 15 seconds

M31 is the nearest galaxy to ours and is about 2.5 million light years away (thiugh it is getting closer).

I next had a look at Mizar. Mizar is the centre star in the handle of The Big Dipper. The reason I went there is because it is a double star in that it has a companion star (Alcore). Some folk can split the two with the naked eye. Mine are shot enough that I need binoculars to do so. Mizar is about 88 light years away.

(https://farm2.staticflickr.com/1903/44882855141_8dfb7d03bb_k.jpg) (https://flic.kr/p/2bo9n92)DSC00182 (https://flic.kr/p/2bo9n92) by Matt Langridge (https://www.flickr.com/photos/59790646@N05/), on Flickr
ISO1600 single frame 5 second exposure.
Mizar is the brighter star, Alcore the slightly fainter.

Last nights images suggest my scope alignment isn't perfect as some trailing is evident though not too bad. As I get used to the basic operating methods I will progress on to multi frame capture and stacking.


Title: Re: A Random Thread For Astronomical Stuff.
Post by: PaulR on September 24, 2018, 05:04:32 pm
Aha, I have just spent a day off sick answering emails from colleagues and surfing cycling and astronomy websites.  And saw your shots of M31 etc on SGL.  Nice work.  I have recently moved to a darkish village but have not really scratched the surface of what a DSLR can reveal in the night sky
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on September 24, 2018, 06:55:25 pm
i got kicked out of SGL for Bad Behaviour and can't go back.
(Not that I've tried recently.)
David's out too cos we use the same phone & internets.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: PaulR on September 24, 2018, 07:13:50 pm
SGL is a funny place but v informative (by which I suppose I mean it gives me lots of ideas about how I could buy more astronomy clobber that I don't really need).
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on September 25, 2018, 10:05:58 am
I have recently moved to a darkish village but have not really scratched the surface of what a DSLR can reveal in the night sky

The Parisian satellite town where I lived in 1980 had darker sky than the country village I live in these days.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on September 25, 2018, 12:06:50 pm
We had darker skies in Richelieu, where I did a choir school one year, than we'd ever seen in the UK.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: essexian on September 25, 2018, 12:19:41 pm
That's one of the small number of things I dislike about living here, namely the lack of a dark sky. Indeed, we can normally see stars out one side of the house due to bl**dy "security lights." Why do my neighbours need either to turn these full time all night, or set them up so they turn on whenever you look in their general direction.

If you want a dark sky, we found that the cottage we rented overlooking the sea in the north of Skye (yes, yes) was the best I have ever seen. Indeed, the sky was so clear it was a little overpowering: I guess we can normally see a few hundred stars at most here in the Midlands. Up there, there were thousands and thousands I am sure I read somewhere that there are 6 000 stars visible to the naked eye. Is that right?

The first time I saw the Milky Way was around 1970 from the Scout Camp near Romford.... I bet you can't see it now from there!!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on December 04, 2018, 11:10:47 pm
No images but when I got up thgis morning, the view of the waning crescent moon just to the east of a crescent Venus was beautiful. Thwe conditions were such that I swear I could resolve the Venus crescent with naked eye
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on December 04, 2018, 11:41:10 pm
Yes.  I sleep with my curtains open.  When I first awoke at 6ish, they were shining in on me.  Venus looked fantastic without my glasses on.  An out of focus fiery thing. 
Title: Re: A Random Thread For Astronomical Stuff.
Post by: andytheflyer on December 05, 2018, 08:05:17 am
No images but when I got up thgis morning, the view of the waning crescent moon just to the east of a crescent Venus was beautiful. Thwe conditions were such that I swear I could resolve the Venus crescent with naked eye
I'm no astronomer, but I thought that yesterday at dawn the moon and Venus were the clearest that I'd ever seen them. Thanks to the dog needing a walk.

Didn't know Venus had a crescent though - but I suppose any planet will have, so thx for that. 
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Pedal Castro on December 05, 2018, 01:28:16 pm

Didn't know Venus had a crescent though - but I suppose any planet will have, so thx for that.

Only Venus and Mercury will show crescents to Earth bound observers
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on December 05, 2018, 02:12:42 pm
Venus must be past max. elongation already, and I've only seen it twice this autumn. Saw it this morning, though, beautiful as ever.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on December 06, 2018, 08:00:36 pm
A couple more from the other night-

The Orion Nebula-
(https://i.imgur.com/iPATmGk.jpg)

And Betelgeuse-
(https://i.imgur.com/xtqTs1b.jpg)
This one could go supernova at any time (between now and about 1 million years time). Gonna be a bit of a show when it does!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Pingu on December 15, 2018, 06:03:12 pm
Jupiter images from Juno https://www.nasa.gov/mission_pages/juno/images/index.html

(https://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/pia22692.jpg)

(https://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/pia22694.gif)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on December 15, 2018, 11:31:52 pm
Juno is capturing some stunning imagery isn't it?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Peter on December 16, 2018, 12:14:13 am
Does that top shot of Jupiter remind anyone else of William Blake's artistry?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Pedal Castro on December 16, 2018, 08:04:48 am
Juno is capturing some stunning imagery isn't it?

It certainly is.

I found a dolphin surfing the waves of Jupiter's belts.

(http://www.nrtoone.com/allowhotlinking/JunoDolphin_crop.jpg)
So long and thanks for all the fish!

Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on December 16, 2018, 01:15:11 pm
:thumbsup:

Looks like it's being pursued by Cthulhu.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on December 17, 2018, 09:24:47 pm
I just love this shot.
https://twitter.com/alynwallace/status/1074727771002294272?s=19
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on December 17, 2018, 10:20:25 pm
I just love this shot.
https://twitter.com/alynwallace/status/1074727771002294272?s=19
I agree basil- a bit special.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Pingu on January 02, 2019, 11:05:18 pm
Meet Ultima Thule.

(https://i.guim.co.uk/img/media/a8ddc22d68fb13491db2d40c16b7d1e032cb91c3/51_0_1984_1192/master/1984.jpg?width=1065&quality=85&auto=format&fit=max&s=2a6250a76fe6b76ad8b8631ba35c73ee) (https://www.theguardian.com/science/2019/jan/02/first-close-ups-of-ultima-thule-reveal-it-resembles-dark-red-snowman)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Mr Larrington on January 03, 2019, 10:29:01 am
In a recent referendum, Thule has voted to leave Ultima.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on January 17, 2019, 11:53:10 pm
Managed a little while outside under cloud free skies last night- the moon was looking good.

(https://i.imgur.com/oVfsHw7.jpg)

(https://i.imgur.com/k67KuBL.jpg)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on January 18, 2019, 09:30:23 am
Lovely shots.  Have you had a go at Mars recently? It's pleasing that it's still high in the evenings. I don't think I can remember a year when Mars has been visible for so long.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on January 18, 2019, 10:07:56 am
Thanks T42. Not tried Mars yet. It is on the list but time and weather are the limiting factors at the moment.

The biggest impediment is set up. Deploying a tripod and scope for visual is a relatively quick process but, the set up for imaging can be quite lengthy. Polar alignment can be one of those things that goes like clockwork or takes forever!

Oh for a permanant pier or, best case scenario, a back garden obsy :D
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on January 18, 2019, 01:30:53 pm
Yeah. I was working towards that but never got round to it before a bunch of new houses were built and the new street lights lit up the sky. Nowadays we have a physiotherapy centre next door and at nights it's floodlit to chase away the bogeymen.  >:(  :demon:
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on January 18, 2019, 04:50:12 pm
Back garden observatory complex works well.
Big telescope on brick & concrete pier, shielded by roll-off roof and connected by cables to computers in 'warm room' shed.

Then the mice chew the cables and the climbing cats' claws compromise the roofing felt....
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on February 13, 2019, 10:08:11 am
5 day old moon 10th feb 2019
(https://i.imgur.com/2Gpv0JT.jpg)

The terminator is bisecting (from North to south) Mares Frigoris, Serenatis and Tranquillitatis.
Crater Theophilus is prominant about 1/3rd of the way up the terminator heading North, identifiable by the prominant mountain at its centre.
The prominant crater just North of mid point, with a bright Western rim and dark shadow within is Maskelyne. Move West from here to just within the terminator line and you reach the location where Neil Armstrong took his 'One small step for man....' (50 years ago this July 21st).
Slightly East and North of Maskelyne, a point of uplands/ mountains intrude into mare Tranquillitatis. This is the site of the Apollo 17 landing on 11th december 1972 in the Taurus-Littrow Valley.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on February 13, 2019, 01:00:16 pm
Very nice!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on March 13, 2019, 03:01:54 pm
I are my Asto Societies new Chairman :o
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on March 13, 2019, 03:07:10 pm
Constellations.  ;D
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on March 13, 2019, 05:01:46 pm
Oh you star!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on March 15, 2019, 11:02:51 am
 ;D
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on March 15, 2019, 11:04:32 am
My first attempt at multi pane mosaic images.
4 pane mosaic of the moon taken 18/02/2019. All images used were exposed identically.
This was more about alignment of the panes. Processing out join artifacts etc will come later

(https://i.imgur.com/kojl3Nd.jpg)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Giraffe on March 16, 2019, 08:49:12 am
That's remarkably good for a camera that's about 1,810 years old!
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on March 17, 2019, 09:31:56 am
Doh! Edited ;D
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on April 11, 2019, 09:23:22 am
So THAT is what a Black Hole looks like-

https://www.bbc.co.uk/news/science-environment-47873592

I wonder what Steven Hawking would have thought to that.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Ham on April 11, 2019, 10:39:54 am
Folks here might enjoy (or, already know) this site https://www.swagastro.com/, eg https://www.swagastro.com/ic434-b33.html
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on April 12, 2019, 10:12:36 am
Thanks Ham- not come accross Sara before now.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on May 15, 2019, 10:37:25 am
A couple of images from daylight yesterday-
Sol, sunspot AR2741 Sony a6300 on my Skywatcher 150P reflector. ISO400 1/400 sec exposure

(https://i.imgur.com/hL3zimh.jpg)

I'm hoping that we have just reached the end of the last 11 year sunspot cycle as this is the first I have seen for a while and others have reported a possible increase in activity.

Daytime moon. 2 pane mosaic, same rig, ISO400 1/125sec.

(https://i.imgur.com/VonU6iX.jpg)

A good daytime moon hangs in the sky like the Death Star doesn't it?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on May 15, 2019, 10:50:33 am
 :thumbsup:
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Kim on May 15, 2019, 01:02:11 pm
A good daytime moon hangs in the sky like the Death Star doesn't it?

Almost, but not quiet entirely unlike a Death Star.  Time to repost this... http://www.theforce.net/swtc/holocaust.html#orbit
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 12, 2019, 05:46:00 pm
The Perseids should peak tonight.   :thumbsup:
Looking at the rain radar, it doesn't look like good viewing conditions here.  :(
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 12, 2019, 09:42:10 pm
Garden lounger chair.
Very large G&T
Pipistrelle bats. Check.
Gibbious moon.
Stars? 4. Bugger.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on August 13, 2019, 08:14:17 am
Lemme guess: Summer Triangle + Arcturus.  Jupiter & Saturn thrown in for Your Viewing Pleasure.

Some years back a rogue physiotherapist built a great white monstrosity next door to us, with security illumination that lights up every time a cat wanders past. Bibi sky.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 13, 2019, 09:13:59 am
Not so much light pollution, more cloud cover.
Meteors saw I none.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Jaded on August 13, 2019, 11:46:12 am
Lovely clear sky. Decided to set camera up. 20 mins later lovely clouds fill sky.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on August 13, 2019, 09:30:40 pm
Just popped out the back to see if the sky was clear.  The fact that it is pissing down with rain was a clue.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on August 13, 2019, 11:23:39 pm
I got a couple last night- both Perseids. About 25 minutes apart and on opposing sides of the constellation. The first at around 23:30.

2 nights previously I saw a very bright meteor, east to west trajectory, north of casseiopea. One of the brightest I have ever seen. Also about 23:30
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on August 27, 2019, 11:26:04 am
M57 Ring Nebula, Celestron C6 XLT, Skywtacher HEQ5 Pro mount, Sony a6300 prime focus, ISO 3200 15s single frame exposure, no post processing.

The Ring Nebula is a planetary nebula- these are where the star at the centre of the nebula has expelled a shell of ionized gas as it dies down to a whait dwarf. M57 is around 2,280 light years away and is situated in the constlation Lyra, a little south of the star vega-
(https://i.imgur.com/y1JqjTF.jpg)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on October 21, 2019, 06:04:42 pm
A good chance for clear skies tonight for the Orionid meteor shower.
I'll probably get another stiff neck. 
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Ham on October 22, 2019, 07:50:47 pm
I can't wait to try out my astro mode on my phone. Except, of course I'm in London. Wonder what it's like taking pictures of street lights?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Efrogwr on October 22, 2019, 08:45:50 pm
I can't wait to try out my astro mode on my phone. Except, of course I'm in London. Wonder what it's like taking pictures of street lights?

Astro mode? Is it built in, or is it an aftermarket app? Ios or Android?
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Ham on October 22, 2019, 09:24:17 pm
built in, it's USP for the new Pixel 4
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Efrogwr on October 22, 2019, 09:31:45 pm
I'm stuck with an iPhone...
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Ham on October 22, 2019, 09:33:15 pm
<gulp> bugger me it's clever

just pointed the thing out my back door and clicked, handheld, swaying like anything. Second one is more "up" than the first which was just "I can only see one star with my eyes, let's see what happens"

(https://2.bp.blogspot.com/-L87YvNqP1Vc/Xa9nDPmaQkI/AAAAAAADF8g/9K4THk-spyk6tRo99Bip4M8_mxpbZBv2gCKgBGAsYHg/s1600/IMG_20191022_212526.jpg)

and

(https://1.bp.blogspot.com/-X1RR6R7tW4o/Xa9nDOKHO3I/AAAAAAADF8g/cD5sUlhX4L4MRacwE3zGDMUvW-yAQ1NuACKgBGAsYHg/s1600/IMG_20191022_212827.jpg)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Efrogwr on October 22, 2019, 09:36:24 pm
Yep, that's impressively clever.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on November 07, 2019, 08:01:41 pm
Mercury passes between the sun and the earth on 11 November.   Next time will be November 2032.
Good timing for viewing from UK.  Afternoon and evening.
I will try to project an image in the early evening, weather permitting.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on November 07, 2019, 08:30:08 pm
https://www.rmg.co.uk/discover/explore/when-is-the-next-transit-of-mercury (https://www.rmg.co.uk/discover/explore/when-is-the-next-transit-of-mercury)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on November 07, 2019, 11:21:08 pm
Don't bother. The UK is going to be cloud bound for the transit. I know this because I have taken the day off to observe it...
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on November 11, 2019, 12:02:06 pm
Even our online local rag is in on this...
https://www.harrowtimes.co.uk/watfordnews/18024727.watch-mercury-make-rare-transit-sun/?ref=ebln (https://www.harrowtimes.co.uk/watfordnews/18024727.watch-mercury-make-rare-transit-sun/?ref=ebln)

Shame their image has a disproportionate apparent size of Mercury and states Mercury orbits the Sun every 88 years...

It might not be completely overcast here but is rather breezy.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on November 11, 2019, 12:44:37 pm
David managed to image the start, through breaks in the cloud, so he's a happy bunny.

(https://pbs.twimg.com/media/EJF9FEXXsAEjK7f?format=jpg&name=4096x4096)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on November 11, 2019, 01:16:26 pm
:thumbsup: to David.  In our particular branch of Sticksville we've got wall-to-wall cloud and despondency down to zero feet.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: hellymedic on November 11, 2019, 01:31:07 pm
November! No sun, no moon....

Our sky has around 50% cloud, and the clouds are fairly mobile.

David is entertaining another AstroBachelor right now.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: Basil on November 11, 2019, 03:24:20 pm
Nice shot.  Not much chance of imaging the sun here.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: T42 on November 11, 2019, 04:51:28 pm
I actually saw it yesterday, for about 30 seconds.
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on November 11, 2019, 07:41:27 pm
I managed one capture- through a solar continuum filter hence green-
(https://i.imgur.com/qsSTFHy.jpg)
Title: Re: A Random Thread For Astronomical Stuff.
Post by: fuzzy (retd.) AAGE on November 11, 2019, 11:07:19 pm
My image doesn't come anywhere near reflecting the Wowness of viewing the tranist through the eyepiece of my telescope. That little blemish just inside the disc of the sun at about 9 o'clock is a planet. An ickle one but a chuffing planet none the less. Makes yourealise that the sun is a bit big isn't it?