trackerau
16-10-2012, 10:49 AM
Bintel 2" SCT Crayford Focuser 10:1
Near new condition, no marks or scratches, sorry no box.
Screws on to the back of popular SCT telescopes to provide ultra-fine focus adjustments minus the image shift inherent in the SCT scopes.
Use by focusing with the main focus knob, then lock the mirror and do all fine adjustments with Crayford Focuser. 2.5CM of adjustment.
I used this on a 10" Meade on an GEM, perfect.
Note: Clearance with the drive base may be an issue with some telescopes when the telescope points toward the zenith (on fork mounts in alt az) or when pointed towards the celestial pole (on fork mounts in polar mode)
Cost New from Bintel $119 asking $65 + post
Near new condition, no marks or scratches, sorry no box.
Screws on to the back of popular SCT telescopes to provide ultra-fine focus adjustments minus the image shift inherent in the SCT scopes.
Use by focusing with the main focus knob, then lock the mirror and do all fine adjustments with Crayford Focuser. 2.5CM of adjustment.
I used this on a 10" Meade on an GEM, perfect.
Note: Clearance with the drive base may be an issue with some telescopes when the telescope points toward the zenith (on fork mounts in alt az) or when pointed towards the celestial pole (on fork mounts in polar mode)
Cost New from Bintel $119 asking $65 + post