Quote:
Originally Posted by Rex
Stunning image Mike and Trish. When you zoom in as you have said, you can see all the individual star colours which range significantly from deep red, through orange and yellow right up to the different hues of blue. Spectacular data and processing.
|
Hi, Rex! Thanks for having a peep. Glad you like it.
Quote:
Originally Posted by strongmanmike
Wow  yeah, t'is a beauty guys 
I see the flares below the stars too, what is that?
Great stuff, maybe I will have a go tonight too  haven't imaged Omega for ooooh?.. over two years now  
Mike |
Thanks Mike. The flares below the stars (actually to the right of the stars as photographed - we've rotated 90 deg) remain a deep and very annoying mystery. They show up when we do an extreme stretch on an image. They're not classical blooming, because faint stars get 'em as much as bright ones.
They are always to the right (as photographed). Right-left is north-south, so they're not due to say a sticky RA gear train.
Didn't used to get them with the STL-11000M, so they seem to be something specific to the Aspen CG16M.
They appear no matter where in the sky, and no matter whether the exposure is very short or very long.
As I mentioned in reply to Paul, we really ought to unbolt the camera and rotate it 90 degrees, and see if the smears rotate with the camera (implying something funny about the chip) or whether they remain north-south, which would suggest something about optics or guiding. But the camera, off-axis guider, and filter wheel weigh a ton, are 2.5 metres up in the air, the cable runs are really tight, whinge whinge, and it's a long, nasty, anxiety-provoking job.