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Starlight Instruments Feather Touch 3.5" R&P Focuser

Starlight Instruments Feather Touch 3.5" R&P Focuser

by Starlight Instruments
SKU SI-FTF3515B-A
CA$1,344.00 - CA$1,372.00
CA$1,344.00
CA$1,344.00 - CA$1,372.00
CA$1,344.00
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You will need a tube adapter ring and an endcap to install this focuser on your telescope. You also have the option to install a finder scope bracket on the focuser. Contact us if you need help choosing the right parts.

The telescope must have at least 4.35" of clearance for the draw tube to go inside of the telescope, if not the draw tube will "bottom-out" and give you more back focus.

Specifications

For the 1.375" Draw Tube Travel Version (FTF3515B-A)

Lifting Capacity 18-20 pounds
Draw Tube Travel 1.375"/34.93mm
Known To Fit Large RC/Dob Scopes
Accessory Locking Collar 5.125X24 Female Threads
Draw Tube Drive Mechanism Rack/Pinion
Finderscope hole thread dimension 8-32
Other Info 4 3/32 X24TPI thread on visual side of draw tube
Reduction Ratio 10:1
Weight of focuser 5.216 pounds of which includes the standard adapter and 2" compression ring end cap
Racked In from Mounting Face 5.236" w/Compression Ring End Cap
Racked Out from Mounting Face 6.625" w/Compression Ring End Cap

For the 3.5" Draw Tube Travel Version (FTF3535B-A)

Known To Fit Large Refractors
Lifting Capacity 18-20 pounds
Draw Tube Thread 4 3/32 X24TPI thread on vizual side of draw tube
Draw Tube Travel 4.5"/114.30mm
Accessory Locking Collar 5.125x24 Female Thread
Reduction Ratio 10:1
Other Info Focuser weighs 6 pounds
Draw Tube Drive Mechanism Rack/Pinion
Finderscope hole thread dimension 8-32
Weight of focuser 5.938 pounds of which includes the standard adapter and 2" compression ring end cap
Racked In from Mounting Face 5.236 w/Compression Ring End Cap
Racked Out from Mounting Face 9.736" w/Compression Ring End Cap