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Astrophotography and Sketching >> Sketching

Pages: 1
Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
M36, M37, M38 and a lot of cold sweat
      #4214455 - 11/28/10 05:08 AM Attachment (68 downloads)

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 -8C). 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

Edited by Jef De Wit (11/28/10 05:09 AM)


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: M36, M37, M38 and a lot of cold sweat new [Re: Jef De Wit]
      #4214458 - 11/28/10 05:12 AM Attachment (47 downloads)

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

Edited by Jef De Wit (11/28/10 05:12 AM)


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: M36, M37, M38 and a lot of cold sweat new [Re: Jef De Wit]
      #4214460 - 11/28/10 05:13 AM Attachment (46 downloads)

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

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HellsKitchen
Pooh-Bah


Reged: 09/05/08

Loc: Melbourne Australia
Re: M36, M37, M38 and a lot of cold sweat new [Re: Jef De Wit]
      #4214499 - 11/28/10 06:29 AM

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

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Mentor
professor emeritus


Reged: 09/30/10

Loc: Ontario, Canada
Re: M36, M37, M38 and a lot of cold sweat new [Re: HellsKitchen]
      #4214559 - 11/28/10 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.

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: M36, M37, M38 and a lot of cold sweat new [Re: Mentor]
      #4214780 - 11/28/10 11:20 AM

Jef,

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

Frank


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JayinUTModerator
I'm not Sleepy
*****

Reged: 09/19/08

Loc: Utah
Re: M36, M37, M38 and a lot of cold sweat new [Re: frank5817]
      #4214854 - 11/28/10 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.


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lunar
Carpal Tunnel


Reged: 07/03/10

Re: M36, M37, M38 and a lot of cold sweat new [Re: JayinUT]
      #4214986 - 11/28/10 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

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: M36, M37, M38 and a lot of cold sweat new [Re: lunar]
      #4216294 - 11/29/10 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 ).

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rolandlinda3
Post Laureate
*****

Reged: 01/24/06

Loc: Crozet VA 22932
Re: M36, M37, M38 and a lot of cold sweat new [Re: Jef De Wit]
      #4216560 - 11/29/10 10:05 AM

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

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Tommy5
Carpal Tunnel


Reged: 03/28/04

Loc: Chicagoland
Re: M36, M37, M38 and a lot of cold sweat new [Re: rolandlinda3]
      #4218007 - 11/29/10 10:49 PM

Nice sketches of these winter clusters thanks for posting.

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John K
Carpal Tunnel


Reged: 12/26/05

Loc: Vernon BC Canada
Re: M36, M37, M38 and a lot of cold sweat new [Re: rolandlinda3]
      #4218022 - 11/29/10 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.


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CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: M36, M37, M38 and a lot of cold sweat new [Re: John K]
      #4218215 - 11/30/10 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


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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: M36, M37, M38 and a lot of cold sweat new [Re: Jef De Wit]
      #4218599 - 11/30/10 10:02 AM

Jef.

, on your very good sketches

CS,KLU,

,

Tom


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hbanich
Pooh-Bah
*****

Reged: 06/17/05

Loc: Portland, Oregon
Re: M36, M37, M38 and a lot of cold sweat new [Re: niteskystargazer]
      #4219334 - 11/30/10 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.


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ericj
professor emeritus


Reged: 02/17/05

Re: M36, M37, M38 and a lot of cold sweat new [Re: Jef De Wit]
      #4219451 - 11/30/10 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 .

Best,

Eric


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joelimite
Carpal Tunnel
*****

Reged: 09/01/08

Loc: Fayetteville, AR
Re: M36, M37, M38 and a lot of cold sweat new [Re: ericj]
      #4222401 - 12/01/10 10:46 PM

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

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: M36, M37, M38 and a lot of cold sweat new [Re: joelimite]
      #4222970 - 12/02/10 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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