ANTLIA Ha 4.5nm EDGE NARROWBAND FILTER Size:31mm the Moon and the Sun

the Moon and the Sun (only with additional energy rejection)

iOptron was able to remove unnecessary bulk giving the GEM45 an incredible 2

75 mm Thickness

The Geoptik 5kg counterweight is a high quality counterweight with an internal diameter of 25mm

3 serial ports on the back of the saddle

ANTLIA Ha 4.5nm EDGE NARROWBAND FILTER Size:31mm the Moon and the SunThe Antlia H Alpha 4. 5nm Edge narrowband filter has the same excellent transmittance characteristics as their 3nm Pro series but at a more affordable price. The 4. 5 nm bandpass is only 1. 5% of the entire visible spectrum, increasing the signal to noise ratio and delivering high contrast images and extremely dark backgrounds. To even further enhance the contrast, and suppress the stray light and internal reflections, Antlia applies edge blackening