Re: [APML] The Other Gibbous Moon

["Robert Gendler" <robgendler@worldnet.att.net>]

Hi Scott, Stan,Geoff and Alex,
Thanks.
To be honest I never intended to image the moon. I was trying
unsuccessfully to do some deep sky imaging with the gibbous moon
overhead. Eventually I gave up and decided to do a quick mosaic
(sort of like lighting a candle instead of cursing the darkness <G>).
I took 15 frames and ended up using 6. The moon was close to the zenith
at about 2AM when I imaged it. I used a h-alpha filter.
The moon comes together much more easily in a mosaic than a galaxy like M31
which has a much broader dynamic range. I used the same technique described
in my tutorial at
http://www.robgendlerastropics.com/Article3.html
I then used a combination of curves, levels, brightness and contrast
to match the individual frames to each other.  Finally a gentle unsharp mask
was applied in PS.
Rob Gendler
Email: robgendler@att.net
Web site: http://www.robgendlerastropics.com/
----- Original Message -----
From: <astropix@att.net>
To: <astro-photo@seds.org>
Sent: Monday, November 25, 2002 9:27 AM
Subject: Re: [APML] The Other Gibbous Moon


> Rob...
>
>      Another world-class 'amateur' image... you're right, these middle of
the
> night lunar phases are seldom seen. To minimize atmospheric effects one
must
> catch the moon close to the meridan transit... which means 2:00/4:00 AM
for
> some waning gibbous phases. Did you wait for the 'straight up' position or
let
> your instrument pierce through skies? Do you ever do EP projection along
the
> terminator with that fine set-up?
>
>  Nice Work...
>
>  Geoff Powers
>
>
>
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