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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. thank you. |
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| Teleskop Service has a good customer service. Information about backfocus is also usually written on the flattener page. |
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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) CS Rolf |
