What would cause this in an image

On 3 Mar 2006 16:10:51 -0800, "ShibbyShane"
wrote:


Craig M. Bobchin wrote:
Hi all,

I just posted an image I had taken last weekend while up in Big Bear.
It was of the flame nebula/Horeshead area in Orion. This was with my
LX200 @ f10 and my Canon 20d @ prime focus.

This is a 2 min, ISO 3200 Exposure. You can just see the flame
starting to peek out. But i'm concerned about the blue Swirly laserium
effect and the blue circle around the star.

What caused them? I'm leaning towards some sort of reflection possibly
off the sensor, but I'm not positive. I've seen this in other astro
images I've tried such as M45.

Any ideas would be appreciated.

You can see the image at:
http://www.pbase.com/craigbob/image/56761542/large

Thanks

Craig
--
You have no right to protection against being offended.

Cool photo, what kind of lens did you use?

He used a 2000mm f10 Schmidt-Cassegrain telescope, a mirror-lens.