OVL Field Flattener thread size

[GraemeH]

I was the very grateful recipient of a Skywatcher ED72 at Christmas, and bought an OVL flattener to go with it. I want to use it for imaging with a full frame dslr, so would like to use my m48 t-ring to minimise vignetting.

The flattener comes with a thread adapter on the camera side which is m42, and my rough and ready measurement of the thread on the body of the adapter suggested it was m54, so I bought an m54 to m48 adapter. It didn't fit - the adapter is a tiny bit too small on the female side. I guess it might be m55 on the flattener, but I don't want to just keep guessing and buying the wrong thing. 

Does anyone know exactly the thread measurement on the body of the OVL flattener, and if there is anywhere that I can buy a thread adapter to take it to m48? 

Thanks, 

Graeme

[michael8554]

You could ask OVL ?

info@opticalvision.co.uk

Michael 

[stelaras1]

@GraemeH

having the exact same question

did you figure it out?
 

thanks

[AstroNebulee]

This thread pardon the pun maybe of assistance. I've taken the nose piece off my ovl FF and screwed a rotator from FLO to it, it's hard to get the nose piece off but doable. 

https://stargazerslounge.com/topic/337227-sky-watcher-camera-rotator-for-72ed-now-available/

Edited February 7, 2022 by AstroNebulee