Re: [APML] Moonlit Swan

[Brian larmay <power_windows4789@yahoo.com>]

Wow eh'

I have to try this now that Im settled here in NY, but
I dont know if my techpan is good anymore.
I have a whole hypered roll thats been untouched since
last winter.

Why do I always do this stuff when it starts freezing
outside...bla.

Excellent image john ...especially at 3.5 for 35 mins
...incredible,
Brian



--- "John C. Mirtle" <spampit@shaw.ca> wrote:
>     Bill's in-town image of B33 reminded me of a
> project I started in 1993
> and never finished. I wanted to see how far I could
> push moonlit astrophotos
> with an H-alpha filter and tech pan. I was
> distracted with the purchase of a
> Schmidt camera and never got back to it. Last night
> I continued the project
> under some very cold and windy conditions. I wanted
> to shoot for 2 hours but
> was rapidly turning into a popsicle by the time I
> was polar aligned. Some
> idiot came driving in, 35 minutes into the shot, to
> walk his dog of all
> things. It was too darn cold to continue, so I
> packed up my toys and left.
>     The shot was with a 135mm lens, large enough to
> show a gradient from the
> moon if one was present. As it turns out, there is
> NO evidence of a gradient
> at all. My 2 hour target time would have given nice
> results. I will be
> continuing my testing, but only when it warms up a
> bit! So, here is a image
> that wouldn't have been possible without filters.
> 135mm f3.5 for 35 minutes,
> Lumicon H-alpha, 7 minutes in D-19. The image had a
> slight amount of
> vignetting removed, curves adjusted and the
> "fade-minimum" applied. I think
> that it turned out well for such a short shot, but
> then this is a fairly
> bright clump of nebulosity. Maybe one of these new
> fangled 3nm Ha filters
> might fit.... Comments always welcome!
> 
> http://members.shaw.ca/jmirtle/moonlight.htm
> 
> John Mirtle
> The Great White North
> 
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