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toc
18-02-2010, 01:17 PM
I have the Orion short tube 80 with a dovetail bar and guidescope rings - what is the best option for mounting this on top of the C8?

TrevorW
18-02-2010, 02:04 PM
ADM sell mounting plates for the C8

personally if the intent is for imaging then don't use guide rings go for a fixed mount (less flex)

http://www.admaccessories.com/V_Series_Dovetails.htm

http://www.admaccessories.com/V_Series_Dovetail_Adapter.htm

the 80 tube rings attached to the adaptors then attached this to the dovetail bar atop the C8

mldee
18-02-2010, 05:08 PM
If you already have the dovetail with your 80, it would be good to use that directly, but it's probably too short, hence Trever's suggestion of the ADM dovetail setup.

I also mounted a short quiding f5.5 refractor atop my C8 and used a local 13.5" dovetail. Made up a couple of small aluminium "straps" to bolt it to existing holes in my older C8 end plates. I can send some photos for inspiration if you're interested. Works great.

mithrandir
18-02-2010, 05:31 PM
A set of Losmandy blocks for a C8.

I have the Bintel guidescope package set up exactly that way.
C8
Losmandy blocks
Dovetail
Rings
Scope

The only thing is you can't disassemble it easily.

toc
18-02-2010, 09:56 PM
That would be great - the dovetail is actally pretty long, so on Bintels suggestion, Im getting some Losmandy V Curved Blocks:

https://www.bintelshop.com.au/Product.aspx?ID=8334

Pretty sure I can make that lot fit.

As an aside, Im pretty impressed with the Short tube 80. Focuser is a bit stiff, but optically it is great.

mithrandir
18-02-2010, 11:42 PM
A GSO 10:1 Crayford fixes that.