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First Orion Wide Field

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#1 AstroMan0


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Posted 13 January 2013 - 09:28 PM

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


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    ELEVEN Grandchildren; FIVE Ducklings

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Posted 14 January 2013 - 06:54 PM

Cool... :bow: :bow: :bow:

#3 gustavo_sanchez



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Posted 16 January 2013 - 10:52 AM

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

#4 Nebhunter


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Posted 17 January 2013 - 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.


#5 AstroMan0


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Posted 17 January 2013 - 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!

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