Quote:
Originally Posted by Shiraz
great idea Bert. getting the stars out of the way certainly adds an extra dimension to the capability of your system as a very sensitive tool for imaging faint extended targets. Have you tried calibrating the system to see how far down in surface brightness it can go? Do you anticipate that the continuum filter method will do a better job of star removal. regards ray
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The Astrodon Red Continuum filter will remove stars and associated haloes far better than any software.
My system is very fast and I have not hit any limit yet. It is a matter of how stable it all is for long exposures. My whole aim was to have a very fast F3 system with a very low noise sensitive camera and 3nm NB filters.
Ultimately it is always about signal to noise. This is the only dogma in science!
If the weather clears I will do many one hour exposures with the 3nm NB filters and see what pops out. One hour at F3 is equivalent to 2.7 hours at F5 in number of photons collected. The thermal noise is a factor of 2.7 less with the shorter exposures.
Bert
