BAADER CMOS H-ALPHA 3.5nm F/3 ULTRA-HIGHSPEED FILTER Size:65mmx65mm allowing you to clamp every

allowing you to clamp every eyepiece and accessory securely

RJ11 4 pins / USB

Dobsonians have the quickest setup time of just about any telescope

The Star Adventurer GTI features a Vixen style dovetail saddle for compatible accessories and optical tube assemblies

75 female thread (T2)

BAADER CMOS H-ALPHA 3.5nm F/3 ULTRA-HIGHSPEED FILTER Size:65mmx65mm allowing you to clamp everyThe new Baader CMOS optimized H alpha 3. 5nm Highspeed F 3 filter is a precision grade narrowband filter with a high transmission at the H alpha line at 656. 3nm. The Highspeed F 3 versions are specifically designed to work very well with modern highly sensitive astronomy cameras and telescopes with extremely fast focal ratios between f 3. 4 and f 2. 3 such as the Sharpstar Hyperbolic Newtonian astrographs. The ultra narrow 3. 5nm bandpass makes this