Designed to attach camera body and telescope; because of limitation of eyepiece locking screw; better use it together with 2 inch or M48-extension tube to increase contact area between tube body and focuser of telescope to achieve better stability
Projection Features one locking thumbscrews to secure eyepiece; with brass compression insh to prevent marring of telescope eyepieces; for 1.25 inch eyepieces and also can be used as a focal adapter with a T2 thread; threaded for standard 2 inch filters
Features one locking thumbscrews to secure eyepiece; with a brass compression insh to prevent the marring of your telescope eyepieces
These filters have a very large range of effectiveness; Light transmission of polarizing filters is between 1% and 40%; Such adjustable control is highly desirable for lunar observing as the Moon's brightness varies with its phase and also with the aperture and magnification of the telescope you are using; It is also a must for viewing the Moon in daylight hours
It helps you to adjust the brightness effectively; The variable polarizing filter allows for selective adjustment of brightness; which is useful for terrestrial observation and objects of the Solar System