ZWO ASI120MC - Protect Window

ASI120 Manual
11
6.2 Protect Window
There is a D21 IR-CUT protect window in the ZWO ASI120MC and ASI120MC-S camera to
prevent the sensor from humidity and dust.
Diameter is 21mm and 1.1mm thick.
Transmission chart of the UV IR-CUT filter
ASI120MM and ASI120MM-S come with the D21 AR protect window.
Transmission chart of the AR filter