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Old 20-06-2017, 09:18 AM
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John K
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Join Date: Sep 2005
Location: Melbourne
Posts: 1,481
GSO 12" f/4 Carbon Truss Newtonian

Hi guys,

Just wondering what everyone's thoughts are about this scope?

https://www.bintel.com.au/product/bi...uss-newtonian/

I currently use a 12.5" f/5 scope and need something it that will be more portable for me and will be only used for Deep Sky astrophotography.

The only issue I have with the spec I see is that there is only 51mm of back focus. My current set up uses 105mm of back focus which means I may be looking at having to get a new low profile filter wheel and OAG. As well, I currently use the Baader MPCC coma corrector and feel that I will also need a new Televue coma corrector to cope with the f/4 optics.

Also looks like the focuser will be inadequate and will need to be upgraded.

Thoughts?

John K.
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