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MoonLite’s NiteCrawler models are a fully electronic focuser that uses fly by wire control technology for very accurate positioning in both focus and rotation. The patented design is intended for remote automation of large heavy imaging instruments providing extreme position accuracy that is repeatable down to .26 Microns.
Vertical focus motion is handled by 3 Stainless Steel rails riding on 6 large 1/2" bearings under large pre-load pressure. This allows the focuser to maintain center line mechanical point even with huge instrument loads hanging on it. Rotation is provided by an inner and outer drawtube riding on a double row bearing track providing extreme rigidity.
The drawtube is designed just like a tall bearing, but in this case is hollow. The large stainless steel lead screws provide very accurate position and no backlash up to 25 lb instrument loads. The focuser holds heavy loads even with the power off and remembers position on power up, no need to re-home each time it is turned on.
- 25 lb. instrument load capacity
- 2 axis no backlash lead screws
- Rotating drawtube .001 degree resolution
- WR25 374,920 steps per revolution
- WR30 444,080 steps per revolution
- WR35 505,960 steps per revolution
- Approx. .9” travel, 94,580 steps per inch resolution
- .0000105” per step or .2667 Microns per step
- Large ½” high capacity bearings
- 3 point stainless steel linear rails
- 5 jog rates with 32 indent encoder knobs
- Left knob rotation & Aux focuser/ Right knob focus
- Eccentric cam bearing collimation system
- Remote temperature probe
- ASCOM / non-ASCOM / SKYX
- Auxiliary motor port can run 3 optional accessories:
- Optional Mini Worm secondary focuser
- Optional automated dust cover
- Optional Focal reducer/ flattener elevator positioning system
- Most flange sizes in stock. Custom available on request
- 6 custom anodized colors
- Power 12 volt / 400mA (both motors running), 120mA (Idle)
- Weight - WR25 6 lbs. WR30 7 lbs. WR35 8 lbs.
- Flange extenders available for adjusting profile .7" thick and 1.7" thick sizes
- Thread in adapters for all cameras /reducers available
- Drawtube extender rings included .5” , 1”, 2” sizes
- 3.8” to 4.1" min profile, depends on lower flange picked
