Eastern Veil Nebula - NGC 6992/6995, IC 1340 with 27"

[Uwe Glahn]

Last new moon I began the largest sketching project ever for me - the Eastern Veil.

All in all I needed 2 nights with approx 7h of observing time to get the rough sketch on the paper. I used no star form and sketched free from one end (N) to the other end (S). I took 2 walk trough, 1 for each night. The rough sketch consists of 3 A4 sides. As addition I added 2 test star fields to determine the limiting magnitude. I only uses 172x with the 27" with the [OIII] filter.

The fine sketch (black on white paper) needed approx the same time than the rough sketch at the eyepiece. I tried to reach approx the same limiting magnitude on the paper than through the eyepiece. I place every star per hand and control most of the stars before the sketching.

Here is the result with 1000x width. Higher resolution and the original black and white scan you can see at the homepage (http://www.deepsky-visuell.de/Zeichnungen/Cirrus_27.htm)

http://www.deepsky-visuell.de/Zeichnungen/Cirrus_27.jpg

[KidOrion]

Absolutely STUNNING.

[Jimi Lowrey]

Awesome drawing Uwe!

What is the Mag of the faint stars in your drawing?

[Ivan Maly]

Awesome work!

P.S. Awesome detail, too - the double structure of the feature I call (forgive the vulgarity) "the beer opener" (just to the right of the middle in this picture), and so on, and so on...

[wvreeven]

Hey Uwe,

I compared your drawing to a photo and you forgot a few stars :P But seriously, what an amazing drawing!



Clear skies,

Wouter

[Uwe Glahn]

Hi,

thanks for your positive feedback.

@Jimi
I checked my rough sketch and the faintest star is a little bit over 14vmag. Others are in the range of 13,6-13,8vmag. I tried to sketch stars which I saw in a quick look with low mag (172x) + [OIII]

@Ivan
Yeah, some nice structures there which remembers me also after some animals or things in live. "beer opener" is good and of course a very important tool for every day :) My favorite structure is the most southern offset structure. Both bright [OIII] knots as "the eyes" and faint bridges between them.

@Wouter
Sorry you are right. I checked all stars today in a quick and dirty 10 hours session at the telescope :D

[ChristianR]

Absolutely stunning Uwe!
It even seems to hover in the starry sky.

[Howard B]

Excellent Uwe! As impressive as your sketch of the nebulosity is, I find that the star filed is every bit as good - you've conveyed a wide range of magnitudes in a wonderfully realistic way.

[Uwe Glahn]

Christian and Howard,

also thanks to you for your feedback. Nice to hear these words from sketching experts like you both, thanks.

[RolandosCY]

S-u-p-e-r-b ! ! !

[hajuem]

Hi Uwe

Wonderful drawing with 27"!! Great work!

CS Hajü
www.astromerk.de

[Bertrand Laville]

Hi All,
As I did some days ago for the western Veil NGC 6960, here is my drawing of the western part with a 25" f/5 Obsession, from southern Alps.

2798

All détails at http://www.deepsky-drawings.com/ngc-6992-6995-ic-1340-t635-2/dsdlang/en

Clear skies
Bertrand
http://www.deepsky-drawings.com/

[Howard B]

Magnificent drawing and overall study of the Veil nebula Bertrand - bravo! The additional drawing made with the h-beta filter shows how the different view is from the OIII view, and I'm super impressed with the isophotes you drew as well. As I gather from your page, you started by drawing the isophotes and then created the drawing, and I'm curious if you drew the isophote lines freehand or did you use a photo as a template? However you did it, the proportions of the final drawing look perfect. Well done!

[Bertrand Laville]

Hi Howard,

Apologies for the late reply; nevertheless, here are my answers to your questions.

I didn't use an H-beta filer on the Veil but only a OIII. But I have the chance to own a 1.25" and a 2" Lumicon OIII filters of the late 90's, before the problems of the Company. In that period, OIII filters had a band pass similar with the present ones for the OIII lines, but they let pass the lines after 640 nm, including of course H-alpha. It is the reason why I can perceive both the green and the red, at least if they are enough strong. The difference between the two colors, in my experience, is that a strong green is obvious since the first second of observation, on the contrary of the red which appears after a long period of observation, sometimes after one hour. And the longer I observer, the stronger the red is.

Concerning your second question, about the use of an image or a blank sheet as a background for my sketching, the answer is: 'It depends :-)".
For large targets as diffuse nebula, for instance Veil Nebula, I privilegiate images (if they are very detailed, as Gendler's or A Block, or German guys of Capella Observatory, who, all, allowed me to use their images). But for very little, sharp, and dense targets, as planetary nebulae, I prefer most of th time to sketch with a pencil on a white paper. As an example, have a view, if you want at http://www.deepsky-drawings.com/eta-carinae-2/dsdlang/en

Clear skies
Bertrand