In St. Louis, we went from early spring to late summer in 2 days... it's hot outside. I was going to shoot my DSLR tonight at Cygnus because clear nights are hard to come by. Here is my question. I can shoot HA for 4 minutes, Broadband for a couple, or (with some testing) no filter for probably 30 seconds. I'm in Bortle 4/5 area and then the full moon. When it comes to noise... do I shoot filter-less and keep the times down?
DSLRs, Heat, Filters, and Time
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