The image on the left was taken at 2:17am on 10/11/2015 and the right side image 15 minutes later. All the images of Sh2-263 have this artifact and for the life of me I have no idea why. There are no very bright stars in the area to affect the image and it isn't ice as it remains the same for the next 14 - 15 minute images. The imaging train is 12.5" f/9 OGS RC, 3' Pyxis rotator, corrector lens, MOAG, and STL11002M with CW8. The only thought I have is possible reflection of the pick-off mirror in the MOAG? At the moment I'm not guiding through the MOAG but do have the RGH installed. I haven't figured the FOVi yet. The images are raw 15 minute images taken at -15C using MaxImDl 5.24 and ACP Expert.
Image taken this even (next night) with no reflections, different target.
Image taken last night (10-12) with blue filter showing the same reflection in lower left and almost center bottom with a hint of something on the right edge.
Now on NGC1333 showing in the upper left and lower right corners..
And nothing on NGC284. Well that might not be true, is that a slight pattern on the left about center? All taken on 10-12
Imaging Train showing SBIG STL-11002M/FW8, AstroDon MAOG, OGS Corrector lens, Pyxis 3" Rotator.
Baffle tube and dirty mirror. Honestly it looks so much better straight on!
Imaging train as it is now with the current reflection issues.
Counter weight dovetail bars on both sides.
OTA interior. Notice SS hex bolts holding secondary spider vane. Also out of focus are the SS hex bolts holding the baffle tube.
Wider view of the interior.
Secondary mirror reflected in the primary mirror.
Rear Cell
Again, Rear Cell
View from Rear Cell to Secondary Mirror
Secondary Mirror
