OPTOLONG L-eXtreme FILTER Size:2" measure the exact coordinates by

measure the exact coordinates by a process called “plate solving” and feed the coordinates back to the mount

Uranus and Neptune are distant and without any high contrast details

Optical design RiFast

SWMAK150-OTA

Connect the camera to the OAG and lock the 3 thumb screws

OPTOLONG L-eXtreme FILTER Size:2" measure the exact coordinates byThe Optolong L eXtreme filter is a light pollution dual band filter designed to drastically reduce the effect of light pollution. Its two passing bands isolate the nebulae emissions in H Alpha (red) and OIII (green blue). The advantage of the L eXtreme filter is that there is no transmission between the H Alpha and OIII lines as there are no nebula emission lines there. It blocks the light pollution, maximises nebulae signal and makes the sky