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Originally Posted by JohnH
Some thoughts from an Ex VC200L user.
The focuser is poor and you will need to replace it if you are using it for AP.
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If camera gear is weighty and autofocusing is wanted; then yes I recommend it.
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The wide, flat field is great it will cover a full frame - but to do this Vixen added a custom corrector inside the draw tube - this means the whole unit must be replaced hence the lack of focuser options and the high cost.
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Sort of. The baffle tube with corrector unscrews from the backplate.
Feathertouch provide a replacement backplate to match their 2.5" focuser. Brett I think is using FLI focuser?
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The complex optical system makes collimation harder than with other scopes and means mirrors must be returned to the factory if work is required on them.
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The collimation isnt complex. Its pretty easy with the right instruction.
Same as collimation of a Planewave CDK ?
True. Mirrors need Vixen to recoat if ever needed. The have a mysterious VISAC process to coat the mirror to match the secondary.
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If you use the FR you cannot use an OAG at the same time - not even the vixen one.
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QSI 583OAG system works fine with FR.
Though I need a custom adaptor made to fix the field curvature with its current position.
* Whichever scope; you may very well want to upgrade the focuser. Just depends what type and purpose.
* Its an old design that has never been refined; but simple modifications can make it better
