Quote:
Originally Posted by glend
Does this information apply to non-modded DSLRs as well? I have heard that i'd be wasting my time with trying narrow band imaging with my Canon 450D. Is a LP filter the logical alternative?
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Same kind of logic applies ...
I get some great results with a modded 450D and a 7nm Ha/OIII filter at f/5, but I reckon non-modded would be tough in Ha, unless you can image at something like f/2 or lower, or stick to the bright Ha emission nebulae, or only image when pretty cold.
Basically, with non-modded (and presumably uncooled DSLR), the weak Ha signal detected on the sensor will be swamped by thermal noise. Other NB lines like SII are hard work even when everything is in your favour !