Re: [APML] Areas of interest in IC1396

[Chuck Vaughn <aa6g@aa6g.org>]

Russ,
 
> Thanks for all who replied to my post regarding the strange object that I
> have in my image of IC1396. I have uploaded another image with a close up of
> the area including the "blue spots" that someone had mentioned. I have the
> spots in all three of my negs taken that night so I tend to think they are
> nebulous areas unless I am enhancing lab processing artifacts however they
> appear at the same spot on each neg.

When these questions come up it is a good idea to look around for other images
that would likely show the same thing. Here are three white light images of IC1396
I found:

http://www.freeyellow.com/members7/jwisn/ic1396.htm

http://voltaire.csun.edu/IC1396.html

http://www.ne.jp/asahi/stellar/scenes/object_e/ic1396.htm

I can't detect the blue blotches in any of them. You may have run into some
kind of reflection/refraction problem. All it takes is one star in just the
wrong place. It's not always easy to analyze what happened. It's good to be
skeptical because it's unusual for any of us to record something that no one
else has when most of our photos are looking at the same part of the spectrum.

Chuck <aa6g@aa6g.org>

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