# 25 Sep, 2018 15:06
I have gso rc8, ts flat2, ts flat2.5 and sbig stf 8300m, fw8.I would like to know the flattener back focuser on each of ts flat2 and tsflat2.5.|
# 27 Sep, 2018 22:56
|Teleskop Service has a good customer service. Information about backfocus is also usually written on the flattener page.|
# 29 Sep, 2018 08:38
I have the GSO RC8".|
For the KAF8300-Chip there is no need to take a correktor, because the field of a RC is flat!
For APS-C or bigger you can use the 1:1 RC-flattener "TSRCFlat2" - Distance 109mm.
For reducing the focal length the CCDT67-Reducer is fine - Distance 85mm +/- 5mm.
By the way: for kollimating the RC the best and easiest way is, to use a Cheshire Collimating Eyepiece (TS-No: 0 TSCH)
|You have no new notifications.|