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FTF2015BCR-RP 2.0" Diameter Rack/Pinion Dual Speed foc
FTF2015BCR-RP
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FTF2015BCR-RP---Feather Touch Rotatable 2.0" Diameter Rack/Pinion Dual Speed 1.5" Draw Tube Travel, Brake, and Compression Ring
Feather Touch 2.0" Diameter Rack/Pinion Dual Speed, 1.5" Draw Tube Travel, Brake, and Compression Ring. The focuser utilizes the pinion assembly of our 3.0" focuser for greater lifting capacity. For ease of rotatability the tube adapters will use 3 thumb screws instead of set screws. The motor needed for this focuser is the HSM30, MSM30 or the PDMS-2.5/3.0" Feather Touch.
The attached photo shows the styling of the tube adapter which is sold separately.
Specification:
| Draw Tube Travel | 1.5"/38.1mm |
| Lifting Capacity | 13-15 pounds |
| Reduction Unit Type | 10:1 |
| Draw Tube Drive Mechanism | Rack/Pinion |
| Weight of focuser | 1.810 pounds |
| Racked In from Mounting Face | 1.905"/48.26mm |
| Racked Out from Mounting Face | 3.505"/89.03mm |
Wade Van Arsdale | 
16/11/2011
The 2 inch Feathertouch Rack and Pinion focuser was purchased to handle a heavy binoviewer using large 2 inch eyepieces. Other Crayford-design focusers I tried would slip when focusing this heavy payload "uphill" against gravity with the scope pointed near zenith. The positive gear engagement of the 2 inch R&P design is well worth the extra money compared to typical competitor focusers for SCT's that only provide friction drive of the drawtube. The oversized payload rotation thumbknobs are easy to use in dark and cold conditions and do not develop "memory" indentations or burrs in the screw tips or mating surface of the internal focuser body. The camera payload always returns to the same zero-tilt position and keeps your collimation intact when the thumbnobs are re-tightened following camera rotation.
16/11/2011
The 2 inch Feathertouch Rack and Pinion focuser was purchased to handle a heavy binoviewer using large 2 inch eyepieces. Other Crayford-design focusers I tried would slip when focusing this heavy payload "uphill" against gravity with the scope pointed near zenith. The positive gear engagement of the 2 inch R&P design is well worth the extra money compared to typical competitor focusers for SCT's that only provide friction drive of the drawtube. The oversized payload rotation thumbknobs are easy to use in dark and cold conditions and do not develop "memory" indentations or burrs in the screw tips or mating surface of the internal focuser body. The camera payload always returns to the same zero-tilt position and keeps your collimation intact when the thumbnobs are re-tightened following camera rotation.
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Founded in the USA, Starlight Instruments specializes in precision focusers and optical products. Their well-engineered solutions cater to astrophotographers and visual astronomers looking for accurate, high-performance focusing, establishing a reputation for quality and reliability in the field of astronomy.
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