ZWO 1600 back focus

[piprees]

Hi, just to let anyone know, I must congratulate ZWO. I've got a 1600 mm cool and also have a skywatcher coma corrector. The back focus needed with the camera and filter wheel fitted is then an extra 29.5mm. Guess what, I had 2 spacer rings that came with the camera and fitted together they are.... 29.5mm wide. Not sure if these 2 rings come in the box but thanks ZWO all the same. On the down side, unfortunately I was advised that I had to get a Baader Varilock which I duly did and then, while trying to fit it all together, thought, "hang on, they look the same"!!! Hmmm, a bit p****** off because of that. Anyway, if you feel you need a coma corrector and have a 1600 that came without those rings, see if ZWO can supply them aftermarket.

Clear skies,

P.