RE: [APML] M31 Mosaic project

["Jeff Ball" <jeffball@zoominternet.net>]

Roland, 
That is a very detailed M31 core.  I hope you guys get enough color data
to bring out star colors.  I think it is great to revisit these old
friends with new films and techniques.  I had a good go at Cherry Spings
at M31 two weeks ago.  I was off a bit in dec for my 2 hour exposures.
So my elongation to the north was a bit more than I wanted.  I have
about 5 total negatives that are OK.  I know what I did wrong now.  I
just missed this.  


The Provia 400F at 2 hours is impressive.  The slide just has tons of
info.  The Provia seems to keep recording well as my slightly shorter
exposures of 90 minutes show less than the 105 minutes.  The E200 at 2
hours did exactly what it was supposed to do-capture the H2 regions.
They stand out like red islands in the sky.  Much more prominent than
what the Provia shows.  I think a multiple stack of Provia and E200 for
a luminance and then assigning the appropriate color channels from each
film will make for a very smooth and moderate resolution image.  Keep us
posted on the M31 mosaic.
Jeff Ball

> Hi all,
> 
> Seems like everyone is doing M31.
> 


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>