T2 thread spacer for qsi
while i ordered the QSI 583 WS last summer i forgot to look how much back focus it need with the usage of the baader MPCC
To bad during some imaging i found out that there was a huge amount of coma in the FOV.
The required back focus for the QSI is 35mm, the back focus from the baader mpcc is 15mm, so i needed a spacer of 20mm.
TS, Telescope-service.com delivered the spacer within 48 hours, from south germany to west coast of holland with UPS shipping.
