Great result, Peter.
Quote:
Originally Posted by Peter Ward
I'd also comment imaging at +3000 mm focal length is hard....so much conspires to ruin your efforts, but I'd invite all astro imagers to move away from the cosy sub 1000mm zone and push the envelope...you may be surprised at the results  |
I'd personally argue that focal length is only part of the picture and it's the image scale that counts. For example, my piddly little 8" F4.5 works out to a mere 989mm when combined with the Paracorr... but that's still 0.5"/px with my 2.4 micron pixels. I believe a 16" Alluna combined with the 16803 works out to 0.56"/px while being in excess of 3m.