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3" dual-speed Crayford focuser
and the optics are designed with fully-coated glass
Antares Model No: SW9S4 Barrel Diameter: 1
Five-element lens design renders optically flatter
An unobstructed internal HD Etalon with the new Pressure Tuner allows for
ZWO M54 Filter Drawer for 2" Mounted Filter - Gen II - FD-M54-II Image Stabilization Binoculars 3" dual-speed Crayford focuserProduct Description The Gen II M54 Filter Drawer with 20mm ring design is independently developed by ZWO and specifically made to match with the full frame cooled camera ZWO ASI6200, ASI2400 or ASI2600MC Duo. With the ability of double strong magnetic absorption, it is more convenient and much easier to install or pull out the filter. There is a lock screw on the side of the M54 filter Drawer. The locking function is helpful on adjusting the tension
