ZWO EFW 7 x 50mm SQUARE FOR ASI461MM PRO 3nm 81 mm diagonal)

81 mm diagonal)

whereas the dark absorption "splits" and occurs slightly above and below the typical wavelength where light from non-magnetized activity is absorbed

Your choice of Baader 50 x 50mm square LRGB & 3

length 200mm

for an eyepiece

ZWO EFW 7 x 50mm SQUARE FOR ASI461MM PRO 3nm 81 mm diagonal)The ZWO EFW 7 x 50mm electronic filter wheel was designed for the medium format ASI461MM Pro, which requires 50mm square filters to minimize vignetting across its huge sensor. The EFW 7 x 50mm is CNC machined from a solid block of aircraft aluminium and has an optical thickness of only 16mm. The stepper motor is made in Japan by NPM and has very high precision and reliability. The filter wheel is bi directional, making filter changes very quick. Note: