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17 Messier globulars

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#1 Jef De Wit

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Posted 03 August 2020 - 11:59 AM

I find sketching globular clusters very difficult. They are complex objects and the result with pencil on white paper was rarely appealing to me. Afterwards, I needed a lot of work to make the result acceptable (I like sketching at the eyepiece, but not the postproduction). I have been experimenting with black paper for a while (see this topic). A combination of white pastel (for the background glow) and a white chalk pencil (for the stars) turned out to be an ideal combination. Just like my moon sketches, you get a field sketch that is as good as finished. Except for digitizing, cleaning some pastel swipe or making a bright star round if needed. I didn't touched the other stars (so they are not all round).

 

How did I proceed? The beginning was the most difficult part: the background glow with pastel. The lack of (red) light turned out to be a problem. As soon as you start to wipe (with your finger, ear stick or tortillon), you no longer see what you are doing. With moon sketches you can use a lot of (white) light, with deep sky you can't. After a few sketches, I found a solution. If you press the red light completely against the paper and shine parallel to the sheet, you can see weak contrasts. But still it isn't ideal. Sometimes it took a long time before I was satisfied. The stars and granulation were more easy. You can sharpen the chalk pencil well and the tip lasts a long time.

 

During a 2 week holiday in France I enjoyed a dark sky. All objects were also 5 ° higher in the sky (than my hometown more north). I used the same magnification for all sketches: x240. The field of view of the sketches is more or less the same. It was a little to much for two large globular clusters (M22 and M55). At x240 you start to look through the globular. Working without a sketch circle is liberating. You don't feel the urge to put all the environmental stars on paper. That is why I deliberately chose a square presentation. I had bought an A5 sketchbook. Works fine, but there was hardly any room to write comments. In the future I will use A4.

 

I sketch in total 17 globular clusters, where I preferred the low specimens (which cannot be seen from home). I thought a lot about how I would display them. I hope you don't mind a collage. Click on the sketch for more detail.

Attached Thumbnails

  • bolhopen zomer 2020 1200.jpg

Edited by Jef De Wit, 03 August 2020 - 12:00 PM.

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#2 Jef De Wit

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Posted 03 August 2020 - 12:01 PM

A picture of my work supplies:

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  • witte potloden bolhoop comp.JPG

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#3 SeanStaresatStars

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Posted 03 August 2020 - 12:07 PM

Those look fantastic!! I'm still working out my techniques for sketching globulars with pencil on white paper. Thanks for the inspiration. 


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#4 clusterbuster

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Posted 03 August 2020 - 12:10 PM

WOW, those drawings are excellent.

 Mark


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#5 Aquarellia

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Posted 03 August 2020 - 01:23 PM

That's a difficult type of object for a very nice collection!

Well done Jef!

Michel


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#6 frank5817

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Posted 03 August 2020 - 08:13 PM

Jef, 

 

Beautifully worked sketches completed with an excellent plan in mind. They look great together showing both similarities and differences. It is clear in this display that they do not all look alike at the eyepiece.

 

Frank :)


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#7 Sasa

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Posted 03 August 2020 - 11:48 PM

Excellent, I like the details you captured on your sketches. They show that globular clusters have their own individualities.
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#8 Ivan Maly

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Posted 04 August 2020 - 08:08 AM

Great work, Jef.

 

I stepped back from using black paper for the time being (drawing PNs), because I don't like how white pencil blends - in my untrained hands, and also a function of the paper grain (I haven't found anything smoother than black Artagain, and it is still rather textured). But that's only for smooth nebulosity. Globular background is pretty much always grainy to my eye.


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#9 niteskystargazer

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Posted 04 August 2020 - 09:15 AM

Jef.

 

Nice sketches of Globular Clusters smile.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom


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#10 chrisrnuttall

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Posted 04 August 2020 - 01:53 PM

Nice series of drawings Jef. I don't do a lot of deep sky but even I recognised M12 with those lanes of stars, very realistic.

The issue of representing a smooth faint glow on black paper is tough. I experimented quite a bit with the recent comet and ended up applying many layers of pastel with fixing spray in between so that i still had enough tooth left at the end to allow me to draw in the brighter details.
Not really an option at the eyepiece though, so well done to you for getting such realistic pieces of work for all 17.
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#11 Forward Scatter

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Posted 04 August 2020 - 03:54 PM

Great sketches, Jef!


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#12 megachriops95

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Posted 04 August 2020 - 07:06 PM

Fantastic sketches!

 

What type of sketchbook is that? where can I get one


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#13 Jef De Wit

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Posted 05 August 2020 - 06:52 AM

I experimented quite a bit with the recent comet and ended up applying many layers of pastel with fixing spray in between so that i still had enough tooth left at the end to allow me to draw in the brighter details.

Doesn't the fixing spray darken the pastel?



#14 Jef De Wit

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Posted 05 August 2020 - 06:58 AM

What type of sketchbook is that? where can I get one

It is this one: https://en.canson.co...om/xl/xl-black 

You can look for a local store here: https://en.canson.co...store-locator/ 


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#15 DDEV

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Posted 05 August 2020 - 07:40 AM

Hi Jef,

 

Your series of globular sketches are fantastic. What a nice record to have from your holiday.

 

Thanks for going to the effort to sketch these globs, and sharing them with us.

Clear skies,

Darren.


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#16 chrisrnuttall

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Posted 05 August 2020 - 03:44 PM

Hi Jef. Yes it does, so you keep adding layers and building up the intensity with each one. It's a bit frustrating and sometimes you feel like you arent getting anywhere, but after many layers i was really pleased with the results.
It means you can keep on drawing and building up depth without ever reaching that point where the paper won't hold any more pastel.
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#17 pedrovillamiel

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Posted 06 August 2020 - 06:44 AM

Hi Jef, a very good collection of globular clusters and a very successful presentation where you can identify and compare the characteristics of each one at the same time.
Pastel pencil and black paper are different in all respects from graphite pencil and white paper. More difficult to achieve a smooth and balanced texture or image. But in contrast, black paper and pastel pencil have a special appeal in their appearance. I am still captivated by the appeal of white on black paper. You just have to work hard.

Good work and greetings.
Pedro Villamiel.


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#18 Heidescoper

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Posted 07 August 2020 - 01:13 AM

hi all,

 

Jef:

 

wow, great idea.

What a nice project for the short "white" summer nights !!!

 

CS

Christian

 

PS:

and next summer time the same with bright ( M and NGC) PN`s wink.gif ?


Edited by Heidescoper, 07 August 2020 - 01:13 AM.

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#19 Jef De Wit

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Posted 07 August 2020 - 02:42 AM

What a nice project for the short "white" summer nights !!!

 

(...)

 

and next summer time the same with bright ( M and NGC) PN`s wink.gif ?

In France I had already some hours of astronomical darkness. And next summer: I keep your suggestion in mind.



#20 Jef De Wit

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Posted 09 August 2020 - 11:17 AM

I uploaded the sketches in DeepskyLog. If you want to look at the individual sketches (in better resolution): link.

 

I would like to thank everyone who posted a reaction or a liked this topic smile.gif


Edited by Jef De Wit, 09 August 2020 - 11:17 AM.


#21 Pbinder

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Posted 20 August 2020 - 07:51 AM

I really like these. They are perfect! 


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#22 Asbytec

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Posted 28 August 2020 - 01:22 PM

Jef, you've done justice to Messier 4, especially. Nicely done. 


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