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M36, M37, M38 and a lot of cold sweat

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#1 Jef De Wit

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Posted 28 November 2010 - 05:08 AM

The Belgium weather was very cloudy in November, but yesterday we finaly had a clear, but cold night. I made a widefield sketch of Jupiter in the twilight (still working on that one). After that it went again cloudy for two hours. When it cleared up again, I tried some faint gx but the transparancy wasn't that great.
So I turned to some bright Messiers. The first sketch (M38) looked very good, so I tried a second (M36). Meanwhile the temperature was dropping (my SQM said it was -8°C). And when I finished M36... why not sketching the third OC in Auriga?
That was too ambitious: I was tired, half frozen and M37 was the most difficult of the three to sketch (a lot of faint stars). Halfway the sketch (I did the N-side), I stopped to put all the stars in detail on paper. The S-side is rather an "impression".
The most difficult about sketching an OC for me is the brightness of the stars. I tend to draw stars bright or faint. But nothing between the two.
All comments are welcome.

M38, 27/11/2010, 21.00-22.00 UT, 12" dobson @ x92, FOV +/- 30', NELM 4.6

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#2 Jef De Wit

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Posted 28 November 2010 - 05:12 AM

M36, 27/11/2010, 22.00-23.00 UT, 12" dobson @ x92, FOV +/- 30', NELM 4.6

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#3 Jef De Wit

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Posted 28 November 2010 - 05:13 AM

M37, 27/11/2010, 23.00-24.00 UT, 12" dobson @ x92, FOV +/- 30', NELM 4.6

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#4 HellsKitchen

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Posted 28 November 2010 - 06:29 AM

Brilliant sketches, well done! You've made the most of otherwise sub-ordinary conditions.

#5 Mentor

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Posted 28 November 2010 - 08:09 AM

Nice cluster sketches! These three are on my near-term "hit list" as well, provided that the clouds ever go away here. It is now over 3 weeks since we have had a clear night.

#6 frank5817

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Posted 28 November 2010 - 11:20 AM

Jef,

Excellent work.:waytogo:
These 3 open clusters are near enough to one another to make quick comparisons.

Frank :)

#7 JayinUT

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Posted 28 November 2010 - 11:56 AM

Jef,

Great work here! You've captured their likeness most excellent. I too have found that my stars are either light or heavy in a sketch. When I process them digitally I am starting to refine a system where opacity on the star determines its magnitude and thus allows me I hope to start to get the faintness I am looking for. We'll see if I achieve anything with it. Well done again on these 3.

#8 lunar

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Posted 28 November 2010 - 01:04 PM

Very nice sketches Jef! I haven't had the skies lately to view these objects or any other objects, but you sure gave me a preview that makes me want to stand out there for the next 10 hours and take advantage of every "sucker hole" that I see. My skies have been so terrible lately with the lake effect snow coming off from Lake Erie, the clouds are endless :foreheadslap:

#9 Jef De Wit

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Posted 29 November 2010 - 05:07 AM

Thanks a lot for the kind words. I wish clear skies to everybody! Here in Belgium it is again all cloudy and cold (and it will stay that way for some days :().

#10 rolandlinda3

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Posted 29 November 2010 - 10:05 AM

This is a really nice set of sketches. Your sweat payed off.

#11 Tommy5

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Posted 29 November 2010 - 10:49 PM

Nice sketches of these winter clusters thanks for posting.

#12 John K

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Posted 29 November 2010 - 10:55 PM

Nice work
I sketched M38 and NGC 1907 two night ago.I haven't had time to process it though.Of the three I think M37 is the best.It was also my favorite on the trio.

#13 CarlosEH

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Posted 30 November 2010 - 01:32 AM

Jef,

Excellent observations of M36, M37, and M38. They all agree with my own impressions of these fine open clusters. Thank you for sharing them with us all.

Carlos

#14 niteskystargazer

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Posted 30 November 2010 - 10:02 AM

Jef.

:waytogo:, on your very good sketches :)

CS,KLU,

:thanx:,

Tom

#15 hbanich

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Posted 30 November 2010 - 04:28 PM

By just looking at your sketches it would be impossible to tell you were geeting cold and in a hurry to finish. It's difficult to do anything when feeling too cold so your sketches are even more impressive.

Your star images look pretty good to me but the scale of the sketches isn't large enogh to really tell. Certainly the overall impression is nicely realistic.

#16 ericj

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Posted 30 November 2010 - 05:15 PM

Jef,

Really nice sketches. It can be tough trying to sketch when it is cold like that. Hope you had a chance to warm up later inside with some nice Belgium beer and chocolate :jump:.

Best,

Eric

#17 joelimite

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Posted 01 December 2010 - 10:46 PM

Terrific sketches, Jef! I especially like M37; it looks exactly like what I saw at the eyepiece last night.

#18 Jef De Wit

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Posted 02 December 2010 - 09:45 AM

Thanks you all! It really makes my day, but doesn't make the clouds go away... :(
I find it strange that you like so much M37. It is the only sketch of the three that's isn't completely "finished". Half of the sketch is an "impression", not a "reality". And the nebulosity is too light.

@ Howard: You're right. I always tend to sketch only the object with no fieldstars around. It gives a lot of detail but not the "situation" of the object in the sky. I remember that someone on CN said that you should have 1/3 of object and 2/3 space around. In fact, I didn't even sketch all that was visible in my 13mm Nagler (FOV 50').






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