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Old 03-09-2019, 06:18 PM
pepsimax (Josh)
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Location: Goulburn NSW
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Making G&G binoscope w/tak foa-60 or 76

Hi Everyone,

Just looking for some help making a binoscope.
I'm looking at using 2 foa-60's or fc-76's. Id like to make it very portable but still considering both these scopes.

I really like the idea of viewing with both eyes, but keeping the scope at its maximum potential without the loss.
Any input would be greatly appreciated!

I have a few questions:

Is the difference between the binoscope and binoviewer large enough to justify the cost of a binoscope?

Where do I start with the bracket to mount and align them? I was hoping that I could get one custom made, but where from?
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Old 03-09-2019, 08:10 PM
Rainmaker (Matt)
Excalibur Industries.....

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Location: Canberra
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Hi Josh,
To make a binoscope from a pair of FOA60s, you will need a pair of EMS-US visual backs from Tatsuro Matsumoto, 2 sets of 68mm K-Astec 68mm tube rings from Sakabe-san at Kyoei-Osaka and a BB130 cradle from Beat Kohler at AOK-Swiss.
The resolving ability of a 60mm binoscope is the same as a single but apparent image brightness and image size is much better, about the same as a single eyepiece in a 100mm scope.

Using a binoviewer in a 4” Refractor gives a dimmer image than the 60 bino.
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  #3  
Old 04-09-2019, 01:10 PM
Wavytone (Nick)
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end result
https://www.cloudynights.com/topic/6...-zs-103-binos/
https://www.cloudynights.com/topic/5...75-binoculars/
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Old 04-09-2019, 05:36 PM
Rainmaker (Matt)
Excalibur Industries.....

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There may be another project from Excalibur Industries soon.....
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  #5  
Old 04-09-2019, 08:15 PM
pepsimax (Josh)
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Thanks for that Matt! I was hoping to find you here

Still having the tough decision between the two scopes though.. Best portability vs extra aperture
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Old 12-09-2019, 10:04 AM
warpsl (Jason)
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Location: toukley
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a cheaper option is 4 x baader 32mm prism diagonals,and 2 gso dovetail brackets.this is what i use for my 6 inch binoscope.if your focuser has enough inward travel you could try the orion 1 1/4 inch enhanced mirror diagonals.they are a little cheaper than prisms +adapters.
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Old 15-09-2019, 07:01 AM
AstroApprentice (Jason)
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Location: Melbourne, Australia
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Quote:
Originally Posted by pepsimax View Post
Where do I start with the bracket to mount and align them? I was hoping that I could get one custom made, but where from?
This Japanese company make all the necessary components and full kits, at a high price!
http://binotechno.com/index_en.html
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