|
After doing some more research - I found more reviews that said the Hirsch is not the same as a Celestron reducer. So I decided to buy a Celestron reducer. Looking at the 2 reducers the optics don't look the same, different coatings and different reflection patterns.
Here is my first image. Grus trio, cds canon 60d @ -14C, ISO1600, 90 x 30 sec exposures. no flats. unguided.
I've still got some issues to work on but I'm happy with it overall. The overall image is much flatter than with the Hirsch. Seeing conditions weren't great but it has potential and f/6.3 seemed easier to get roundish stars than f/10. Even the noise seems reduced. Once I use flats to reduce vignetting and improve guiding I should get a better result.
|