Antlia PRO Ultra Narrowband 3nm H-alpha Filter - 31mm Unmounted 60 Degree Eyepiece The Moon: crisp crater and

The Moon: crisp crater and rille detail at high magnification

In the production process

making it ideal for visual observation and astrophotography

Film Photography: Good

Antlia PRO Ultra Narrowband 3nm H-alpha Filter - 31mm Unmounted 60 Degree Eyepiece The Moon: crisp crater andAntlia PRO H Alpha (Ha) 3. 0nm Ultra Narrowband Filter 31mm Unmounted (glass only) Just arrived! Now these Antlia filters got even better! 3nm bandwidth instead of 3. 5nm! The Antlia H Alpha (Ha) 3. 0nm filter is suitable for imaging H Alpha emissions from nebulae, planetary nebulae and supernova remnants. The 3. 0nm bandwidth delivers a high transmission at a centre wavelength of 656. 3nm. The extreme narrowness in bandwidth enables Astro imaging