it says composite but composite can mean different things to different
people
it can be a composite made from different filters....
the abg camera makes is far more doable than an NABG in my opinion
deeper wells help too.
my sensor used was the KAF6303E.... 100K wells NABG
"Rick Johnson" wrote in message
...
As Stefan and Richard mention this is the Cat's Eye Nebula NGC 6543. The
bright blue part of it to the right is IC 4677. The Cat's Eye nebula is
about 3000 light years away. There are two famous Hubble shots of it:
http://antwrp.gsfc.nasa.gov/apod/ap061112.html
http://apod.nasa.gov/apod/ap070513.html
A composite of the eye and the distant faint shell I shot, as Richard
wants to avoid, taken by earth based scopes is at:
http://apod.nasa.gov/apod/ap020904.html
If I ever get super seeing, I'll try a similar compost. To do it in one
shot isn't possible with an ABG camera like mine. With a long enough
exposure to capture the outer shell the inner part is reduced to a handful
of intensity levels by the ABG gate. In my shot the core was 57126 to
57214 ADU units showing no useful detail.
The galaxy is NGC 6552 and is some 325 to 350 million light years distant.
For it to appear this large at that distance it is a giant galaxy!
Rick