[APML] M33-LRGB with RG200 and ST7 from Kitt Peak

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

Hello all,
I got the notion to try and combine my RG200 M33 with an image I took
from Kitt Peak over 2 years ago.  I spent the night imaging a mosaic
with Adam Block with the Meade 16" and an ST7.  I believe this was
Adam's first significant mosaic.  I really did not know what I was
doing.  I guess it has taken me two years to learn a little about
processing to do the image justice.  It is no understatement to say that
I had to shape some stars manually.  There were some very large seagulls
from the Meade scope.  Certainly not from the AP<g>  I believe the focal
reducer was the culprit for the poor off axis images at the time.  I
could be wrong about that.  The RG200 was taken at Cherry Springs SP
with the AP 130EDT.  I used Rob Gendler's LRGB technique.  I hope it is
appropriate to post here.  I also had to remove some red halos.  There
are some data gaps.  You will see large black areas with no stars.  I
guess I should go ahead and copy and paste some stars since I have
manipulated the image so much already<g>  We just did not cover the area
when we did the mosaic.  Links at the webpage to the individual
luminance and color image.  I basically combined the images and did the
star shaping.  Little else.  I thought all of the smoothing techniques
just took away from the bright star clusters in the arms.  The image may
be a bit dark.  I am really having trouble with luminosity as my monitor
warms up.  Please let me know if the image is too dark or too light.  I
do want to error toward dark since I do have the data gaps with no
stars.  The luminance core may be burned out.  I did not know how to
work with the data when I worked on the luminance and mosaic.  The core
is a mask to cover the burned core.  Thanks for any tips.  

http://www.astro-photography.com/M33_ccd_lrgb.htm

Jeff Ball
www.astro-photography.com
Ohio Valley Astronomical Society
www.ovas.org 


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