stefang
14-01-2015, 05:53 PM
Hi there,
I currently have a CPC 800 with a Starlight FeatherTouch Micro-focuser which i love. I recently also acquired a C11 CGEM as well and am looking to upgrade the stock focuser with a Starlight FeatherTouch as well.
I have read a couple of threads both here and CN about SCT users installing both Micro-focusers and Crayford Rack and Pinion Focusers as well directly on the SCT visual back.
As a relatively new astronomy student, does the R&P focuser negate the need for the standard focusing assembly? Am i correct in assuming that if both are installed, initial approximate focussing is undertaken with the secondary focuser and then fine tuned focusing undertaken with the Crayford R&P as its not directly bending the secondary mirror assembly?
Is this correct or am I on the wrong path?
Many thanks for any assistance.
stefan
I currently have a CPC 800 with a Starlight FeatherTouch Micro-focuser which i love. I recently also acquired a C11 CGEM as well and am looking to upgrade the stock focuser with a Starlight FeatherTouch as well.
I have read a couple of threads both here and CN about SCT users installing both Micro-focusers and Crayford Rack and Pinion Focusers as well directly on the SCT visual back.
As a relatively new astronomy student, does the R&P focuser negate the need for the standard focusing assembly? Am i correct in assuming that if both are installed, initial approximate focussing is undertaken with the secondary focuser and then fine tuned focusing undertaken with the Crayford R&P as its not directly bending the secondary mirror assembly?
Is this correct or am I on the wrong path?
Many thanks for any assistance.
stefan