Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Astrophotography and Sketching >> Sketching

Pages: 1 | 2 | (show all)
RolandosCY
super member


Reged: 01/02/09

Loc: Nicosia, Cyprus
NGC 891...
      #5509356 - 11/08/12 02:53 AM Attachment (84 downloads)

...As seen through my 18" two nights ago. I always enjoy this ghostly galaxy. Main attraction is the dark lane, which appears bigger and better defined at the edges than dust lanes in other galaxies.

Usually I do sketch both the stars and the object of interest. In the case of NGC 891, however I tried, I could not render that 3-D prespective of the galaxy floating behind the many field stars. So, I used an alternative method (to be honest, my astrobuddy thought of it!). I made a printout of the stars visible in my field using Megastar (changing star magnitudes until I could only include the stars visible in the field (about mag 15), and I did sketch NGC 891 on the printout. This has achieved the desired effect of the ghostly galaxy floating behind the sharp, bright foreground stars! I don't know if printing the background stars is "cheating", but in this case it certainly enhanced the drawing of the galaxy itself!

Edited by RolandosCY (11/08/12 04:16 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
Astrojensen
Post Laureate
*****

Reged: 10/05/08

Loc: Bornholm, Denmark
Re: NGC 891... new [Re: RolandosCY]
      #5509367 - 11/08/12 03:51 AM

That is a very beautiful sketch. You've managed to get that ghostly feeling it has in the scope just right. Lovely! This is one of my favorite galaxies, even in my Zeiss Telemator and it just gets better with my bigger scopes.


Clear skies!
Thomas, Denmark


Post Extras: Print Post   Remind Me!   Notify Moderator  
Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: NGC 891... new [Re: Astrojensen]
      #5509379 - 11/08/12 04:26 AM

Yea, I like the ghostly feel, too. Well done.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Chopin
Canis Insanus
*****

Reged: 02/03/05

Loc: In the doghouse.
Re: NGC 891... new [Re: RolandosCY]
      #5509727 - 11/08/12 10:57 AM

Quote:

...So, I used an alternative method (to be honest, my astrobuddy thought of it!). I made a printout of the stars visible in my field using Megastar (changing star magnitudes until I could only include the stars visible in the field (about mag 15), and I did sketch NGC 891 on the printout...




It's a great idea. Also a fantastic sketch!


Post Extras: Print Post   Remind Me!   Notify Moderator  
niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: NGC 891... new [Re: RolandosCY]
      #5510154 - 11/08/12 03:47 PM

Roland,

Very good sketch of NGC 891 .

CS,KLU,

,

Tom


Post Extras: Print Post   Remind Me!   Notify Moderator  
rolandlinda3
Post Laureate
*****

Reged: 01/24/06

Loc: Crozet VA 22932
Re: NGC 891... new [Re: niteskystargazer]
      #5510595 - 11/08/12 09:31 PM

very good sketch and such a fun object to observe. good job

Post Extras: Print Post   Remind Me!   Notify Moderator  
John K
Carpal Tunnel


Reged: 12/26/05

Loc: Vernon BC Canada
Re: NGC 891... new [Re: rolandlinda3]
      #5510838 - 11/08/12 11:33 PM

Great sketch!

Post Extras: Print Post   Remind Me!   Notify Moderator  
JimPie
professor emeritus


Reged: 11/10/07

Loc: S.E.Michigan
Re: NGC 891... new [Re: John K]
      #5510940 - 11/09/12 01:33 AM

What a realistic effect. Fantastic!

Post Extras: Print Post   Remind Me!   Notify Moderator  
GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: NGC 891... new [Re: JimPie]
      #5510961 - 11/09/12 01:57 AM

The rendering of the galaxy is nice, in that it conveys the distant ghostliness. Pre-printed stars from a database is not 'cheating' in my books. But the hard-edged, sizeable, flat disks are a decided detraction from realism. How about using them as a guide for placement and relative brightness, drawing in their stead a fine point with a fuzzy halo of suitable size?

Post Extras: Print Post   Remind Me!   Notify Moderator  
Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: NGC 891... new [Re: RolandosCY]
      #5511003 - 11/09/12 03:33 AM

Quote:

I don't know if printing the background stars is "cheating"



No, if you tell us and if the result is beautiful to see (and it is!).


Post Extras: Print Post   Remind Me!   Notify Moderator  
Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: NGC 891... new [Re: Jef De Wit]
      #5511032 - 11/09/12 04:30 AM

Sure, it's not really cheating because the real subject is NGC 891. Posting an image of NGC 891 is cheating.

Glenn makes a good point (pun intended.) If you can make your stars more point like and using different shades of grey scale (or even color) to represent brightness. In this case, you can rely less on size to convey brightness.

Edited by Asbytec (11/09/12 07:00 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
Astrojensen
Post Laureate
*****

Reged: 10/05/08

Loc: Bornholm, Denmark
Re: NGC 891... new [Re: Asbytec]
      #5511035 - 11/09/12 04:36 AM

I have used the trick with printed stars to great success. I use Cartes du Ciel. I print only stars a magnitude or so brighter than what I know I can observe (IE mag 13, when I know I can go to 14, etc), then I fill in additional stars I see with pencil.


Clear skies!
Thomas, Denmark


Post Extras: Print Post   Remind Me!   Notify Moderator  
RolandosCY
super member


Reged: 01/02/09

Loc: Nicosia, Cyprus
Re: NGC 891... new [Re: Astrojensen]
      #5511290 - 11/09/12 09:34 AM

Guys, thanks for the nice comments! As I said, I usually make my own stars with ink, but for some reason in this instance I could not achieve what my own eyes so in the eyepiece. My astrobuddy Nicknacknock first suggested I prepare a printout with stars before I even attempted the galaxy when I made a comment on the fact that there were lots and lots of stars. I now recall that I also read (I think in S&T several years ago) about the technique of first printing out the field with stars but I am not 100% sure.

In any case, I will experiment a bit. I think the difference in this case is that the galaxy appears "behind" the stars, and the combination of ink and pencil can not convey that feeling so well. On the other hand, I am not too enthusiastic about the exactly round, hard-edged stars.

I have posted other deep sky sketches in the deep sky observing section, with stars I produced, and in a little while I will post a drawing of the area of NGC 507 which was made the traditional way. Maybe then you can give me more feedback!


Post Extras: Print Post   Remind Me!   Notify Moderator  
Chopin
Canis Insanus
*****

Reged: 02/03/05

Loc: In the doghouse.
Re: NGC 891... new [Re: Astrojensen]
      #5511292 - 11/09/12 09:34 AM

Quote:

I have used the trick with printed stars to great success. I use Cartes du Ciel. I print only stars a magnitude or so brighter than what I know I can observe (IE mag 13, when I know I can go to 14, etc), then I fill in additional stars I see with pencil.


Clear skies!
Thomas, Denmark




I'll again give credit to the OP for presenting the concept to me. But I have to say I love your idea, Thomas. I may try this...thank you for the tip!


Post Extras: Print Post   Remind Me!   Notify Moderator  
phily
sage


Reged: 12/18/04

Loc: Kent, UK
Re: NGC 891... new [Re: Chopin]
      #5515790 - 11/12/12 11:10 AM

Nice one. Exactly what one might see through the eyepiece.
Phil


Post Extras: Print Post   Remind Me!   Notify Moderator  
Uwe Pilz
scholastic sledgehammer


Reged: 05/16/08

Loc: Leipzig, Germany
Re: NGC 891... new [Re: phily]
      #5517129 - 11/13/12 12:46 AM

Very realistic sketch of NGC 891! Thank you fpr sharing.

Post Extras: Print Post   Remind Me!   Notify Moderator  
rolandlinda3
Post Laureate
*****

Reged: 01/24/06

Loc: Crozet VA 22932
Re: NGC 891... new [Re: Uwe Pilz]
      #5521767 - 11/15/12 07:21 PM

Nicely done, and one of my favorite galaxies.

Post Extras: Print Post   Remind Me!   Notify Moderator  
cpr1
professor emeritus
*****

Reged: 03/24/12

Loc: Louisiana
Re: NGC 891... new [Re: rolandlinda3]
      #5523903 - 11/17/12 07:21 AM

Great sketch!! Just goes to show how dim this galaxy is. Even in a 18 inch scope!

Post Extras: Print Post   Remind Me!   Notify Moderator  
JayinUTModerator
I'm not Sleepy
*****

Reged: 09/19/08

Loc: Utah
Re: NGC 891... new [Re: cpr1]
      #5524152 - 11/17/12 11:01 AM

Roland,

Wonderful capture on the galaxy. One of the things with stars that I have found effective is to vary the intensity and the size. Brighter and larger stars are done in ink, fainter and smaller stars are done in a white pencil/pastel. That affect gives a depth perspective that your looking for I believe. I have to consciously think of doing that though but when I do, I really like the affect. Hope it helps. You can see it on my blog on the second post right now of NGC 1169 which has it to some affect. Not all the stars are round, I've gone back to posting my sketches as they are done in the field and not perfecting the circles and other items (just the raw sketch).


Post Extras: Print Post   Remind Me!   Notify Moderator  
frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: NGC 891... new [Re: JayinUT]
      #5524436 - 11/17/12 02:10 PM

Rolandos,

I somehow missed this sketch when you posted it. Beautiful!

Frank


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | (show all)


Extra information
2 registered and 0 anonymous users are browsing this forum.

Moderator:  cildarith, JayinUT, WOBentley 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 1595

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics