Re: [APML] What lies beneath M78

[Philip Perkins <philip@astrocruise.com>]

Mike,

That's a superb amount of detail to have recorded from a light polluted 
site.  Some of the structures you have captured are very faint, even from 
dark sites.  I was impressed by the amount of broadband (blue) light 
recorded considering the use of an Ha luminance filter.  I understand of 
course that the RGB was recorded separately using the Hutech filter but 
even so this light still has to record somehow on the luminance image.

A very happy New Year to everyone!
--Philip


At 00:33 01/01/02 -0500, you wrote:
>After seeing the Gendler and Loke postings of M78, I was
>inspired to see how deep one could go to show the background
>structure surrounding this area.  Using a 4 hour Ha base and
>6 hours of RGB the background is beginning to show even
>from my driveway with very polluted southern skies:
>
>http://www.webcom.com/af9y/m78hrgb.htm
>
>The upper right edge of this image shows the very weak
>outer edge of Barnard's loop as it ripples into the reflection
>area surrounding M78.  The colors are not spectacular with
>the weak Ha showing a more of a magenta hue as it mixes
>with the reflection nebula and background sky.
>
>
>
>Mike Cook, AF9Y
>http://www.webcom.com/af9y
>mwcook@cris.com



Philip Perkins - philip@astrocruise.com
Wiltshire UK & Luberon France
Astrocruise - http://www.astrocruise.com


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