|
The big advantage of DSLR is the size of the sensor. Most Canon DSLRs are APS sized which is around 25mm x 16mm which is quite large. They are also fairly low noise and reasonably sensitive. APS is the point where getting round stars to the corner starts to become a problem. A good coma corrector is a must. DSLR imaging though is quite alluring and relatively "easy".
But as Slawomir points out it is pretty much relegated to dark skies. In light polluted skies you will pick up too much pollution very quickly that will drown dim objects and you would be limited to bright objects and short exposures. Narrowband is the solution to suburban skies and that really is CCD territory.
The Atik 414 sample images are impressive. The camera seems pretty good. The high sensitivity is appealing and yes 60% more sensitive means 60% less exposure time to get the same result.
Greg.
|