Antlia Hydrogen Alpha (Ha) 2.5nm Ultra Narrowband 36mm Filter (ANT-25-HA-36) V2 Credit: Vincent Cheng

Credit: Vincent Cheng

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The Microstage II Digiscoping-Adapter by Baader Planetarium is the perfect start into digital photography with compact cameras (with a fixed lens) through the eyepiece of telescopes

large aperture astrograph

5-mm to 62-mm diameter for eyepieces delivered beginning mid-March 2008

Antlia Hydrogen Alpha (Ha) 2.5nm Ultra Narrowband 36mm Filter (ANT-25-HA-36) V2 Credit: Vincent ChengThe Antlia SHO 2. 5nm Ultra series filters are made with quartz glass and undergo precisely controlled coating processes to ensure optimal performance. The 2. 5nm Ultra series is designed with a FWHM (full width half maximum) of 2. 5nm +0. 3 0. 1nm and a transmission efficiency >92 95% at the Central Wavelength. The quartz glass possesses an ultra low thermal expansion coefficient with outstanding thermal and mechanical properties. When combined with