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Astrophysics TV27PH .75x Backfocus?

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#1 Franck_Chile

Franck_Chile

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Posted 22 August 2019 - 09:48 PM

I want to use the AP telecompressor to take advantage of its illumination.

I am using a RC 12,5" f/9 with a STL11000 + 8 positions FW + MOAG S.

 

I would like to calculate the backfocus I need in order to have a flat field, because actually using it, I only have 50% curvature!

 

I have difficulties to find informations about it.

Can you help me please?

Regards

 

Franck

 



#2 Marcelofig

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Posted 23 August 2019 - 12:09 AM

On the AP support page, near the end, there is information about their telescope accessories.

 

https://astro-physic...rt/tech_support

 

 

You can also ask in the AP Yahoo group for telescopes, there AP people can answer you.

 

https://groups.yahoo...oups/ap-ug/info



#3 Franck_Chile

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Posted 23 August 2019 - 09:18 AM

Thank you Marcelofig




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