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WO Binoviewer, NP101, 1:1.25 GPC Focus?

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#1 Spikey131

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Posted 26 August 2019 - 12:06 PM

So I have an NP101 (non-IS), WO Binoviewer with a Raf Camera T2 adapter that I connect directly to a Zeiss spec T2 Baader prism diagonal.

 

Will the 1:1.25 Baader GPC allow me to achieve focus with a pair of 24 Panoptics or 20mm  TV Plossls?  How about the 1:1.7 Baader GPC?



#2 Eddgie

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Posted 26 August 2019 - 01:31 PM

First, my advice is to post on the refractor forum because you are far more likely to get a response from someone that uses this configuration.  This forum is not the most visited forum on CN by a longshot. 

 

If you don't get an answer here, you can probably estimate it by using the data in the Maxbright Owners Manual.

 

Just measure your back focus and use the table in the owner's manual to see if you can reach focus.

 

The WO is about 96mm vs about 110 for the Maxbright, so subtract that figure as well.

 

Table is on page 4.

 

http://www.alpineast...nstructions.pdf



#3 Spikey131

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Posted 26 August 2019 - 04:45 PM

Thanks Ed.  I will measure back focus and go from there.



#4 Spikey131

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Posted 20 September 2019 - 12:43 PM

So I answered my own question. I bought the 1.25 Baader GPC. It would not allow the NP101 to focus. However, it does allow my TV76 to focus and improved the view in my C8.
I guess I will need to spring for the 1.7 as well.


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