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Optec - 2-" to 1.25" compression adapter fits directly into the 2" TCF focuser.

Model#: 17663

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$65.00

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Manufactured by: Optec

Optec - 2-" to 1.25" compression adapter fits directly into the 2" TCF focuser.

Details

The  2-inch to 1-1/4-inch Compression Adapter is our improved version of the #17662 1-1/4" adapter.  This new version features a solid brass compression ring with machined grooves to hold 1-1/4" eyepieces firmly without slippage.  A mere 1/8th turn of the upper locking ring tightens and loosens the 1-1/4" bore for easy use with gloved hands.


The #17663 offers a precision machined 2-inch outer diameter to fit into the drawtube of the TCF-S or TCF-Si focuser or any 2-inch focuser.  A dovetail cut matches the three thumbscrews on the TCF-S while the 1-1/4"  inner brass compression ring offers a non-marring alternative for 1-1/4" eyepieces and camera or instrument nosepieces.  The adapter is self-centering for any 1-1/4" eyepiece or instrument nosepiece.


The 2-inch tube features an industry standard M48x0.6mm female thread for 2-inch screw-in type filters.  Removing the lobed  locking ring (shown in red) and the brass compression ring leaves a snug-fitting T-adapter with male M42x0.75mm threads.



  • Overall Outside Diameter (locking ring):  2.20" (55.9mm)

  • Outside Diameter (main body):  1.995" (50.7mm)

  • Overall Height: 1.58" (40.2mm)

  • Clear Aperture: 1.25" (31.8mm)

  • Weight: 4.6 oz (130 g)

  • Back-focus Usage: 0.45" (11.5 mm)


Currently available with Red locking ring, Blue and Gold locking rings available August 2010.  Specify color when ordering.


Compatible with:



  • TCF-S or TCF-Si focuser,

  • TCF-S3 or TCF-S3i focuser with #17804 3-inch to 2-inch reducer,

  • Any manufacturer's 2-inch focuser or receiver.

Additional Information

Name Optec - 2-" to 1.25" compression adapter fits directly into the 2" TCF focuser.
Manufacturer Optec
Model 17663