Quote:
Originally Posted by Hagar
Hi Steve, I have had a 13nm Astronomics and found it worked OK but I had a few reflection problems with this filter. I now have a 2" Baader 7nm Ha and find that although I need longer exposures I don't have the same reflection problems. The 13 certainly lets more light through and more stars which might be better for cameras with on board guiding.
|
Thanks Doug ... I did read that you can use the 13nm in SBIG ST dual chip cameras somewhere. It is ofcourse a consideration as I don't intend to buy a new camera and have no desire to have a separate guide scope setup either. The point of my wanting a Ha filter is not to produce the world's best Ha images rather just to see what I can achieve with my relatively modest equipment and be able to image when that bloody moon is around
