RE: SCT Crayford focuser.in Equipment and Processing tips Thu Jul 12, 2012 1:43 pm
by Ron • 323 Posts
Havn't got one but you would still need the original focuser for coarse focus, using the Crayford for fine focus .
It won't cure mirror flop so I don't know how much it would be worth.
The standard focuser can be improved by fitting a disc of about 75mm diameter 15 mm thick over the standard knob. This wll give the effect of a fine focuser because moving the larger diameter "wheel" will give a finer control.
You can buy such things but I've only seen them on US websites.
RE: SCT Crayford focuser.in Equipment and Processing tips Thu Jul 12, 2012 3:21 pm
by Leonis • 1.309 Posts
RE: SCT Crayford focuser.in Equipment and Processing tips Thu Aug 02, 2012 11:56 am
by deepskysteve • 6.620 Posts
Celestron CG5 Goto with C6 & William optics Z66. . webcamera, Watec 902H, SPC900 webcam, Logitec Pro 4000 webcam, Atik 314L+ Nextimage 5 camera, ZWO 5 position EFW .
RE: SCT Crayford focuser.in Equipment and Processing tips Tue Oct 29, 2013 1:21 pm
by Herbig • 724 Posts
Takahashi TSA102S, William Optics GT81 and Zenithstar 66SD APO, 5" AE Luton Refractor, , Celestron C8 SCT, Coronado PST, Mounts: Skywatcher NEQ6 & iOptron Mini Tower Pro, Meade 5000 series EP's and other bits, Atik 314L+, Lumenera LM075 Mono CCD, Canon 5D mk3, Atik manual filter wheel, Baader filters.