I have a C11 and a DMK21AF04. I live in Miami and typically on a clear night there are only 5-12 stars visible to the naked eye. That said, I am having a rough time getting a blue filtered image of Saturn @ f/25 bright enough.
If I drop the frame rate to 7.5 frames/sec the image will be just bright enough, but I'd like to be able to get to 15 fps like I use for the Red and Blue images.
Now the question..
If I upgraded the c11 to a C14, and kept the imaging at f/25, the image size would be the same on the CCD. But would'nt the image be sufficiently brighter to be able to achieve a 15 fps capture rate?
What if I upgraded the camera to the more sensitive Skynyx?
What if I took the scope to a dark site where I don't have to deal with 3 magnitudes of dimming? Would that brighten the image even more?
Which of these 3 strategies would bear the most fruit?
Dave Bleser