TS optical TSRCFlat3 focus shift

[Paul Haese]

Hi guys,

just wondering if anyone knows if the TS Optical TSRflat3 shifts the focal point backwards or forwards?

[cfranks]

Paul,

The camera side of the TSRCFlat3 has an M80 thread, the distance from this end to the camera sensor should be 106mm. http://www.teleskop-express.de/shop/product_info.php/info/p6972_TS-3--Field-Corrector-for-RC-Astrographs---68mm-corrected---illuminated-field.html
HTH
Charles

[Paul Haese]

Thanks Charles, I knew about the back focus but I was wondering if the focus will shift. I emailed TS today and they say that the focus does not shift for this flattener. That is comforting to know.