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clitherowclan
professor emeritus
Reged: 02/23/05
Posts: 525
Loc: Fife Scotland
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Out last night grabbing some avis of the Moon and Clavius came out pretty well. I know there are some pretty stunning pictures around now with exotic kit and wonderful locations but this is my best yet from Scotland so I had to share it didn't I? Hope you enjoy looking at it half as much as I enjoyed taking it.
Cheers,
Alan C
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Scottish Astronomer, Firstlight Instruments 10 inch F6.3 Newtonian, Helios 8inch F5 Newtonian and ED80 Apo on driven EQ5. Various cheap cameras.
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David Castillo
professor emeritus
Reged: 09/09/06
Posts: 632
Loc: Carmel Valley, Ca
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That is sweet! I had lots of turbulence overhead last night...so that's what I was missing!
---
Dave
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desertstars
Deja moo
Reged: 11/05/03
Posts: 30032
Loc: Tucson, AZ
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Seeing conditions have been so bad here in Arizona, of late, that this is as close to counting craterlets in Clavius as I'll likely get during this lunation.
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Tom W.
SVP8 'She turned me into a 3-legged Newt' EQ
Ralph, the All-Purpose 102mm Refractor
Under the Desert Stars
Alcohol and calculus do not mix. Please don't drink and derive.
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kx9i
super member
Reged: 03/04/08
Posts: 112
Loc: Phoenix, AZ USA
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Alan,
That's a really great photo. Thanks for sharing...
Tom: You must be a native. - I'm from Chicago originally and the seeing here nothing less than perfect 
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desertstars
Deja moo
Reged: 11/05/03
Posts: 30032
Loc: Tucson, AZ
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Quote:
Alan,
That's a really great photo. Thanks for sharing...
Tom: You must be a native. - I'm from Chicago originally and the seeing here nothing less than perfect
I grew up just east of Joliet, as a matter of fact. I've lived in the desert long enough now that I can't recall what passed for good seeing in north central Illinois. 
The seeing in Tucson the last couple of days has been just flat out aweful. 
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Tom W.
SVP8 'She turned me into a 3-legged Newt' EQ
Ralph, the All-Purpose 102mm Refractor
Under the Desert Stars
Alcohol and calculus do not mix. Please don't drink and derive.
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clitherowclan
professor emeritus
Reged: 02/23/05
Posts: 525
Loc: Fife Scotland
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Just goes to show, I always thought the seeing would be good in a desert due to the dry air. Dry air is not something I see regularly from eastern Scotland! Transparency was really good when I took the picture (a very wet cold-front had just blown through) but seeing was pretty unsteady. Its just that I took an awful lot of frames to get the couple of hundred that ended in the stack!
Alan C.
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Scottish Astronomer, Firstlight Instruments 10 inch F6.3 Newtonian, Helios 8inch F5 Newtonian and ED80 Apo on driven EQ5. Various cheap cameras.
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Mare Nectaris
Pooh-Bah
Reged: 03/09/08
Posts: 1114
Loc: Toijala, Finland
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Alan - what a pic!
That Clavius looks fantastic and - as was mentioned just a little while earlier regarding a different pic on a different thread - one can very impressively get from your pic that phenomenon where the Lunar edge is like just regenerating itself from/into the vast darkness of the space - or reconstituting itself as desertstars on that other thread put it...
Well, to me that really is among the best impressions one can get from the good old Moon.
The feeling and impression is in the same instant majestetic, yet somehow strangely sad - why not even reassuring, as one gets to think about the reconstituting thing.
It were like that powder-covered - even sometimes so wet-looking, marelike - lavaball would really hang on or depend upon the actual contrast of the darkness of the space - just to maintain or handle all the brightness the sun is almost ruthlessly casting upon it. Or even as one was just t h a t close on the edge of the actual Moon surface itself - just to get lost in the space ... just by stepping o n e more step...
Well, anyhow that pic of yours really delivers nice impressions.
Have U Alan by the way already seen this marvellous page by Mardi Clark, where one can elaborate upon the size of the craters one is picking up? Clavius is there among the others.
If you haven't already seen this site of Mardis, please visit the site - it has also a bunch of great info:
http://cityastronomy.com/crater-sequence.htm
Be well and clear skies!!
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Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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desertstars
Deja moo
Reged: 11/05/03
Posts: 30032
Loc: Tucson, AZ
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Quote:
Just goes to show, I always thought the seeing would be good in a desert due to the dry air. Dry air is not something I see regularly from eastern Scotland! Transparency was really good when I took the picture (a very wet cold-front had just blown through) but seeing was pretty unsteady. Its just that I took an awful lot of frames to get the couple of hundred that ended in the stack!
Alan C.
The dry air tends to give us excellent transparency. Seeing conditions can be quite poor even when we have crystal clear skies. Two nights ago I tried to observe the Moon when the Clear Sky Chart indicated transparent, cloudless skies. The seeing, on the Antoniadi scale, waffled between 4 and 5. That's literally as bad as it can get.
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Tom W.
SVP8 'She turned me into a 3-legged Newt' EQ
Ralph, the All-Purpose 102mm Refractor
Under the Desert Stars
Alcohol and calculus do not mix. Please don't drink and derive.
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clitherowclan
professor emeritus
Reged: 02/23/05
Posts: 525
Loc: Fife Scotland
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Timo, thanks for the link, a fascinating website. If I'm reading things right, and if the sizes of craters in your link is given in kilometers then I've definitely got down to 5KMs and may have resolved just a bit under that; really useful thank you. Tom, do you get the jet stream over your location a lot? We do in the UK so steady upper air is rare at this time of year.
Alan C.
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Scottish Astronomer, Firstlight Instruments 10 inch F6.3 Newtonian, Helios 8inch F5 Newtonian and ED80 Apo on driven EQ5. Various cheap cameras.
Edited by clitherowclan (04/18/08 03:23 PM)
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