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Re: [APML] NGC281: Imaging in Moonlight
Hi Rob,
I just went out last night for an attempt at a nice techpan h-alpha mosaic
of the milky way and conditions were against me...the worst in fact.
Ground fog was the issue last night...my low to the horzon shot came out
well b4 the fog hit, but as I worked my way up, dew set in and then the
misty groundfog came.
What made it worse was the moon rising, and the now lit ground fog.
So there I was at about 25 mins into the exposure and all looked lost.
So instead of scrapping the shot, I wanted to see how far this filter would
go...I pushed it to 45 mins.
Before I developed, I wasnt expecting anything to turn out, but to my
surprise all was good.
They are definetly usable shots.
My fear of the moon with fillm has subsided since Ive been experimenting
with the lumicon filter.
If you attempt to try it, all I can say is have fun with it...tech pan is is
a joy to work with.....ya right.
Brian
----- Original Message -----
From: Robert Gendler <robgendler@worldnet.att.net>
To: <astro-photo@seds.org>
Sent: Thursday, September 06, 2001 9:00 PM
Subject: [APML] NGC281: Imaging in Moonlight
> Hi all,
> I realize this is a CCD image but I'm posting it to
> bring up the issue of imaging in moonlight. I shot
> NGC281 last night, three days after the full moon.
> http://robgendler.astrodigitals.com/281.html
> This is an RRGB (exposures = 40:10:10:10) taken
> with an IMG1024 CCD camera (FLI) and my 12.5"RC.
> I've actually imaged several emission nebulas in
> bright moonlight with good results. Images taken using
> "red" or H-alpha" filters are amazingly immune to moonlight
> and skyglow. The green and blue exposures can be problematic
> so I try to get them in before moonrise. Gradients often occur
> in the green and blue channels but can be adjusted in PS.
> I was wondering if anyone has tried doing tricolor or H-alpha
> "tech pan" imaging on a moonlit nite with decent results. I've always
> felt it was a shame to waste those great "seeing" moonlit nights.
> Rob Gendler
> Email: robgendler@att.net
> Web site: http://robgendler.astrodigitals.com
>
>
>
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