I recently tested Optolong’s new 3nm hydrogen-alpha, oxygen-III, and sulfur-II filters and overall I am very satisfied, particularly for their price point ($439 each...
I recently tested Optolong’s new 3nm hydrogen-alpha, oxygen-III, and sulfur-II filters and overall I am very satisfied, particularly for their price point ($439 each...
What would it take to be able to shoot deep-sky objects any clear night of the month, regardless of Moon phase? The answer...
Anyone who images under bright skies knows that even with a light pollution filter, all that background light is hard to beat. The images...