Quote:
Originally Posted by naskies
Nathan,
It looks to me like sensor bloat due to overexposure in the bright star cores, leading to the electrons "overflowing" to the surrounding pixels - i.e. a camera problem, not a scope problem.
The bright white over-exposed cores, and retained star colours in the bloated area, are a bit of a give-away.
DSLRs are particularly susceptible to this, unfortunately. Dedicated CCDs have special anti-blooming features that substantially reduce the problem, and many imagers will also reduce the apparent size of stars during post-processing.
If you try very short exposures - e.g. 15 or 30 secs - I'm sure you'll see that the stars will retain their colours and not bloat.
Cheers,
Dave
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Thanks Dave, i thought that might of been a problem. The scope being 1.5x the 80mm is getting much more light, thus 5min exposures on each will vary bloat.
That being said - initial tests of my TV RFL-4087 appear to be promising. Won't know for sure until i process it but stars seem much sharper in the raw ive got compared to what i posted above.