Lumicon Night Sky Hydrogen - Alpha (Ha) Filter - 58mm LF3100

Lumicon Night Sky Hydrogen - Alpha (Ha) Filter - 58mm LF3100
by Lumicon
Date first available at Amazon.com: July 13, 2011

1 used & new from $109.95

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Review & Description

WARNING: DO NOT LOOK AT THE SUN THROUGH THE LUMICON Night-Sky H-ALPHA FILTER. Eye Damage could result from solar heat transmitted through this filter.Lumicon Night-Sky Hydrogen Alpha Filter, for Black and and White Deep-Sky Photography (Not for solar or visual work). Transmission for this sharp-cut-off deep-sky photography filter is zero below 630nm, 90% at Hydrogen-Alpha 657nm, and 90-98% from 657nm to the near infrared. Both filter surfaces have high-efficiency anti-reflection coatings for maximum performance.

For Deep-Sky Photography: The Lumicon Night-Sky H-Alpha Filter is a powerful aid in overcoming light pollution, and will help you achieve strikingly improved results in telephoto lens B and and W astrophotography. It is ideally matched to hypersensitized 2415 film, and will reduce light pollution 10-fold, making it ideal for photography of faint emission nebulae.

Filter Factor: Exposures may be increased 2-10 times with the Night-Sky H-Alpha Filter, depending on the faintness of the nebula. The Night-Sky H-Alpha Filter is not suitable for visual use. Hydrogen Alpha Pass filters are deep red filters blocking most of the spectrum with high transmission at the 656nm hydrogen alpha line.

Product Details

• Amazon Sales Rank: #1407 in Camera & Photo
• Brand: Lumicon