BAADER CMOS H-ALPHA F/2 ULTRA-HIGHSPEED FILTER M54 This configuration features a parabolic

This configuration features a parabolic primary mirror with a very short focal ratio (between f/3

21 Highest practical magnification

5" LP and ARCO 3" are a perfect match for applications where backfocus is limited

it may seem that the encoder system is less important

BAADER CMOS H-ALPHA F/2 ULTRA-HIGHSPEED FILTER M54 This configuration features a parabolicThe new Baader CMOS optimized H alpha 3. 5nm 6. 5nm Highspeed F 2 filter is a precision grade narrowband filter with a high transmission at the H alpha line at 656. 3nm. The Highspeed F 2 versions are specifically designed to work very well with modern highly sensitive astronomy cameras and telescopes with extremely fast focal ratios faster than f 2. 3 such as the Celestron RASA astrographs. The ultra narrow 3. 5nm bandpass makes this ideal for