Help with setup please

[john adams]

Hi

Would like someone to sense check my calculations before I proceed with my purchase.

Currently have a OS RH200 veloce and QSI 683 and wanting to upgrade the focuser with a optec leo.

Need you help in order some adapters . 

I have calculated that the back focus is 43mm short of what it needs to be . So was thinking of order 2 adapters with a length of 21.5mm each to make up the short fall.

 

On the telescope side will be the first image and on the focuser side will be image 2 

Am I correct with what adapters I shall order or have I mess it up.

Thanks in advance.

John

 

 

Edited June 28, 2020 by john adams
shoe

[michael8554]

Sorry John, I can't make out most of the info in your image, it's too dark ?

Michael