![]() ![]() It also blocks artificial light from mercury vapor lamps, high and low pressure sodium vapor lights, and unwanted natural light caused by the emission of neutral oxygen in our atmosphere, maximizing the transmission of the main emission lines of the nebula in OIII (496nm and 500nm) and H-alpha (656nm). Compare image was shot by Vincent Cheng with. Asking 340 for all three, including PayPal and shipping to lower 48. 226 views, 2 likes, 0 loves, 0 comments, 2 shares, Facebook Watch Videos from Optolong Filter USA: L-Pro and L-eNhance latest video, click and watch it. Ha- 7nm Sii- 6.5nm Oiii- 6.5nm Prefer to sell the set, but depending on response, may be willing to separate. It blocks light pollution, maximizes the signal from nebulae, and darkens the sky background. Filters are in excellent/like new condition and lived in my filter wheel from time of purchase until now. Optolong Optolong Filters & Accessories 1 2 3 Sort By Show Optolong City Light Supression / Light Pollution Reduction CLS Filter - 1.25' 55.00 In Stock Add to Cart Free US Shipping Optolong City Light Supression / Light Pollution Reduction CLS Filter - 2' 85. ![]() ![]() The 3nm isolates the nebulae's emissions into H-Alpha (red) and OIII (green-blue). Optolong L-Ultimate Review Agena Astro affiliate Galactic Hunter created this detailed written review of the Optolong L-Ultimate, plus a video version. The L-Ultimate is a 3nm dual band filter designed to drastically reduce the effect of light pollution. Color Correction & Minus Violet FiltersĪgena Astro affiliate Galactic Hunter created this detailed written review of the Optolong L-Ultimate, plus a video version below:.Correctors, Focal Reducers & Flatteners. ![]()
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