New Coma Tecnosky corrector with 0.95x reduction factor and leveled field for APS-C sensors and up to APS-H (type kodak 16200)

The smooth 2" barrel is compatible with all focusers and the lack of the groove avoids annoying misalignments.

With the 0.95x reduction factor it brings a newton F5 to F4.75 and an F4 to a very fast F3.8.
The field is correct up to an APS-H format but also performs well on a full frame format.
The backfocus is 56mm with an adjustable ring to bring it precisely to 54 / 55 mm
Towards the telescope there is a thread for 50.8mm filters