ASTRO: M106

Also from a full moon night is this picture of M106. Because of the bright
sky the outer parts are only faintly visible.

Taken from the middle of Berlin with an 8" SCT at f/6.5, G11 mount, SXV-H9
camera, 32x5 minutes.

The picture can also be found at
http://ccd-astronomy.de/temp/m106-32x5gut.jpg

Stefan

Stefan Lilge wrote:

Also from a full moon night is this picture of M106. Because of the
bright sky the outer parts are only faintly visible.

Taken from the middle of Berlin with an 8" SCT at f/6.5, G11 mount,
SXV-H9 camera, 32x5 minutes.

The picture can also be found at
http://ccd-astronomy.de/temp/m106-32x5gut.jpg

Stefan

------------------------------------------------------------------------

I never cease to marvel at what you do with all that light pollution in
broad band exposures. That's far better than my dark sky shot of M106
from my film days.

Trying to do anything with a bright moon has been difficult for me. I
avoid most objects when the moon is between first and last quarter or
the moon is very low. Last night was very humid but clear with lousy
transparency. The moonlight really lit up the sky with the humidity.
It itself was just a dim red object so much light was scattered. But I
tried a H alpha image. I went to process it today only to find no 30
minute darks. I never have had much luck scaling my darks and bias
frames, I prefer exact temp and time darks of recent vintage and avoid
the bias ones entirely. I had none at the warm temp of -20C I had to
use in the high temperatures last night (28C). Today it was up to 33C
and too hot to get the camera down to -20C so until a cooler day they
will be unprocessed. I've had trouble with the moon even with the H
alpha shots when the sky is bright. Flats never seem to work right for
me in a bright sky. But until I can get the darks taken I won't know if
it is usable or not. I think I have a light leak in the system I
haven't tracked down that only shows in long exposures and a bright sky
so the .001" flats don't compensate for the leak. I found one a while
back which has helped a lot but there seems to be another.

Rick


--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Nice picture Stefan!

--
Dirk van den Herik

"Stefan Lilge" wrote in message
...
Also from a full moon night is this picture of M106. Because of the bright
sky the outer parts are only faintly visible.

Taken from the middle of Berlin with an 8" SCT at f/6.5, G11 mount, SXV-H9
camera, 32x5 minutes.

The picture can also be found at
http://ccd-astronomy.de/temp/m106-32x5gut.jpg

Stefan