What is a Digital Focus Counter?
The Digital Focus Counter is a low-cost mechanical alternative to the electronic DRO. The three-digit counter display allows 10
turns of the shaft before returning to zero. If you want focusing repeatability with an NGF focuser, SCT (Schmidt-Cassegrain
Telescope) manual focus or MOTOFOCUS, this unit will do the job. It is available for all NGF focusers (both manual and motorized
versions), as a manual unit which replaces the focus knob on 8″ or larger SCTs (not recommended for CCD imaging due to space
limitations and problems with image shift) and as a piggy-back option for most MOTOFOCUS units. (The piggy-back option is
available only at the time of purchase of a new MOTOFOCUS unit and cannot be added later.). DFC for Celestron SCTs
Celestron early C5 (dual fork arm), C5 / C5+ (single fork arm), C5-S, C5-SGT, C8, C8+, C8-S, C8-SGT, C11, C14, Celestar 8,
Celestar 8 Deluxe, CG-11, CG-14, CGE 1100, CGE 1400, Classic 8, CM-1100, CM-1400, Fastar 8, G-5, G-8, Great Polaris C8, NexStar 8
GPS, NexStar 11 GPS, Polaris C8, Powerstar 8, Super C8, Super C8+, Super Polaris C8, Ultima 8 / 11
Manual version which replaces the focus knob of the Celestron 8″ or larger SCT. (Specify telescope make, model and year.) |
