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Astrophotography and Sketching >> Sketching

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PeterDob
scholastic sledgehammer


Reged: 07/29/05

Loc: Castelnovo ne' Monti, Italy
Helix - both through Dob and binos
      #6045235 - 08/25/13 01:49 PM Attachment (34 downloads)

Hello all! Awaiting clear and moon-free skies I reworked these two old drawings of the Helix nebula. They were both made during the same night and I hope they offer a nice comparison between an 18" Dob and the Nexus 100 bino's.

Cheers,

Peter


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PeterDob
scholastic sledgehammer


Reged: 07/29/05

Loc: Castelnovo ne' Monti, Italy
Re: Helix - both through Dob and binos new [Re: PeterDob]
      #6045237 - 08/25/13 01:49 PM Attachment (25 downloads)

And here's the Nexus 100 version:

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Helix - both through Dob and binos new [Re: PeterDob]
      #6045827 - 08/25/13 07:54 PM

Peter,

This is a wonderful comparison of the two instruments on the same target. With the 18 inch more than 20, 100 mm telescopes you have a big aperture difference. But isn't it wonderful with a modest size instrument and a good sky you can see so much.
Great sketching is your trademark.

Frank


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azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: Helix - both through Dob and binos new [Re: frank5817]
      #6045979 - 08/25/13 09:06 PM

The Nexus reminds me if my 70mm 18x OIII view . Nice pair Pete.

Pete


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Helix - both through Dob and binos new [Re: azure1961p]
      #6046377 - 08/26/13 03:51 AM

I find the difference between the two not so big as I espected!

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PeterDob
scholastic sledgehammer


Reged: 07/29/05

Loc: Castelnovo ne' Monti, Italy
Re: Helix - both through Dob and binos new [Re: Jef De Wit]
      #6046418 - 08/26/13 04:56 AM

Thanks guys! The difference was quite significant, meaning that I had to use a lot more averted vision in the bino's. My Dob was also slightly impaired because this drawing was made before I cut my truss poles and therefore I had to use the OCA, with some light loss. But obviously the bino's have 24x, the Dob 76x. So three times as much and still a lot brighter...

Peter


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Special Ed
Postmaster
*****

Reged: 05/18/03

Loc: Greenbrier Co., WV 38N, 80W
Re: Helix - both through Dob and binos new [Re: PeterDob]
      #6046441 - 08/26/13 06:07 AM

Peter,

I like seeing the two views--there's a big difference. The rendering of the Dob view is terrific, especially the way the nebula trails off to the south.


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Helix - both through Dob and binos new [Re: Special Ed]
      #6046484 - 08/26/13 07:16 AM

Nice obs and sketches, Peter.

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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Helix - both through Dob and binos new [Re: PeterDob]
      #6046648 - 08/26/13 09:55 AM

Peter,

Nice sketch of the Helix .

CS,KLU,

,

Tom


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PeterDob
scholastic sledgehammer


Reged: 07/29/05

Loc: Castelnovo ne' Monti, Italy
Re: Helix - both through Dob and binos new [Re: niteskystargazer]
      #6046760 - 08/26/13 10:58 AM

Thanks, Ed, Norme and Tom!

Peter


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Susan H
member


Reged: 08/01/13

Loc: Texas
Re: Helix - both through Dob and binos new [Re: PeterDob]
      #6047949 - 08/26/13 11:21 PM

Very nice, Peter. Well done. Thanks for sharing.

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kauf
super member


Reged: 07/31/06

Loc: Taicang city, Jiangsu Province...
Re: Helix - both through Dob and binos new [Re: Susan H]
      #6048027 - 08/27/13 12:24 AM Attachment (5 downloads)

my helix.....

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Andrev
Post Laureate
*****

Reged: 02/08/11

Loc: Montreal, Quebec, Canada
Re: Helix - both through Dob and binos new [Re: kauf]
      #6048065 - 08/27/13 12:58 AM

Peter.

Incredible sketch my friend. Really impressive once again.

Andre.


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: Helix - both through Dob and binos new [Re: Andrev]
      #6048147 - 08/27/13 02:50 AM

The second version is the one I see with my 10" scope in darker skies away from home, only in my scope it is bigger.

Nice sketches!


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PeterDob
scholastic sledgehammer


Reged: 07/29/05

Loc: Castelnovo ne' Monti, Italy
Re: Helix - both through Dob and binos new [Re: Scanning4Comets]
      #6048211 - 08/27/13 04:57 AM

Thank you very much, Susan, Kauf, André and Markus!

@Kauf: I already spotted your painting in your post. Very nice!

@Markus: A pair of 100mm binoculars match about a 6" to 8" reflector, so it should not be too far off of your 10". But as you said, you see it bigger with more or less the same brightness, so that more or less works out.

Peter


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