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Astrophotography and Sketching >> Film Astrophotography

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AstroMan0
member


Reged: 06/19/12

Loc: Dedham, Massachusetts
First Orion Wide Field new
      #5621723 - 01/13/13 09:28 PM Attachment (90 downloads)

Well, here is my first wide field attempt for Orion.

Exposure: 6 minutes at f2.8
Lens: Nikon E Series 100mm f2.8
Film: Gas-hypered Tech Pan
Filter: Lumicon Night Sky H-Alpha
Development: 10 minutes D-19

Noah


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THEPLOUGH
ELEVEN Grandchildren; FIVE Ducklings
*****

Reged: 01/11/08

Loc: Carlisle, Cumbria, ENGLAND
Re: First Orion Wide Field new [Re: AstroMan0]
      #5623227 - 01/14/13 06:54 PM

Cool...

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gustavo_sanchez
sage


Reged: 12/30/10

Loc: Puerto Rico, US
Re: First Orion Wide Field [Re: THEPLOUGH]
      #5625981 - 01/16/13 10:52 AM

I think the vignetting can be solved by stopping down the lens a few stops.

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Nebhunter
Carpal Tunnel


Reged: 10/04/03

Loc: Frostbite Falls
Re: First Orion Wide Field new [Re: AstroMan0]
      #5627264 - 01/17/13 12:09 AM

Noah - this is a very good start. Build on the experience - Orion is not an easy object to capture without blowing out the Trap area. Lots of nebulosity around it in Barnard's Loop as well. Stopping the lens to f/4 would help with vignette and sharpen the star probably, but adjust exposure to match. How is the light pollution in your area? This may determine max exposure.

igor


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AstroMan0
member


Reged: 06/19/12

Loc: Dedham, Massachusetts
Re: First Orion Wide Field new [Re: Nebhunter]
      #5628678 - 01/17/13 07:01 PM

Thanks for the advice! About the light pollution, the faintest stars I can see with the naked eye at zenith are a little fainter than magnitude 5. The sky fog limit through my telescope is about 50-60 minutes with my filter, and through my lens it is about 13 minutes (h-alpha filtered). Good idea about stopping down the lens, I'll have to try that if it ever clears up around here!

Clear skies,
Noah


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