OPTOLONG L-eXtreme FILTER Size:2" It is perfect for “field”

It is perfect for “field” observations using a suitable 12V battery (not supplied)

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

SWMAK150-OTA

the flattener has a M69 female thread

OPTOLONG L-eXtreme FILTER Size:2" It is perfect for “field”The 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