Introduction
Electronic filter wheels (EFW) are filter wheels used with mono cameras
for astrophotography. ZWO offers several configurations depending on the
filter size and amount of the filters used. A ZWO EFW simply requires a
USB connection for use and power. You may control it from a variety of
hosts such as PC or Arm Linux or Android smart phone.
Three configurations of the ZWO EFW are currently available:
⚫
1.25”: EFW mini 5 position, EFW 8 position
⚫
36mm: EFW 7 position
⚫
2”: EFW 5 position, EFW 7 position
Installation of Filters
1.25″ & 2" size mounted filters:
(Please note that filters must be less
than 7mm in thickness (not including the threads) and threads must be
less than 3mm in thickness.)
⚫
Remove the screws securing the back cover and remove the back
cover.
⚫
Set the wheel on a flat surface with the face down.
⚫
Screw the filters into the threaded wheel positions.
⚫
Replace the back cover and tighten the screws.
For 31mm, 36mm & 51mm unmounted filters: (Please use the M2 screws
and washers to fix the filters, which are included in the package.)
