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Retekess TD158 Restaurant Paging pager System Queuing Transmitter
combined with the convenience of zero amp glow and high quantum efficiency
The Moon: crisp crater and rille detail at high magnification
making it ideal for visual observation and astrophotography
Antlia PRO Ultra Narrowband 3nm H-alpha Filter - 31mm Unmounted 60 Degree Eyepiece Retekess TD158 Restaurant Paging pagerAntlia 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
