EFW3 Connections?

[DaveS]

Having come down in favour of an Atik 16200 and EFW3 combination, now OOUK are asking about the focuser-side connection size.

It seems that this information must be a state-secret, as nowhere on either @FLO or on Atik's own site is there any mention of this. There's information on the *camera* side connection (Either 54mm or 42mm with adaptors) but not a hint of the 'scope side thread / adaptors. Photos show what looks like a possible 48mm thread with three screw holes, but nothing certain.

So, at the risk of a visit from MI6, does anyone have certain data that I can pass on to OOUK? I think @RayD has one?

[Skipper Billy]

Ssssshhhhh - dont tell anyone.........

♦ Connection at telescope side: M54x0.75 thread (female) and 2" barrel

♦ Connection at camera side: M54x0.75 thread (male)

https://www.teleskop-express.de/shop/product_info.php/language/en/info/p10175_ATIK-EFW3-Electronic-Filter-Wheel-for-7x-2--mounted-filters.html

 

[DaveS]

Many thanks for that, for some reason I didn't think to look on the TS site. Dur....