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Extension Tubes

Items 41 to 47 of 47 total

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  1. Optec - AP2.7 x 24tpi Extension Tube, 1" length.

    Optec - AP2.7 x 24tpi Extension Tube, 1" length.

    AP2.7 Extension - 1" LengthOverall Height: 1.38" (35.0mm)Clear Aperture: 2.52" (64mm)Weight: 1.8 oz (55 g)Back-focus Usage: 1.00" (25 ... Learn More
    Model#: 19884
    $30.00

  2. Optec - AP2.7 x 24tpi Extension Tube, 3/4" length.

    Optec - AP2.7 x 24tpi Extension Tube, 3/4" length.

    AP2.7 Extension - 3/4" LengthOverall Height: 1.13" (28.7mm)Clear Aperture: 2.52" (64mm)Weight: 1.4 oz (40 g)Back-focus Usage: 0.75" (19 ... Learn More
    Model#: 19883
    $30.00

  3. Optec - AP2.7 x 24tpi Extension Tube, 1/2" length.

    Optec - AP2.7 x 24tpi Extension Tube, 1/2" length.

    AP2.7 Extension - 1/2" LengthOverall Height: 0.88"  (22.4mm)Clear Aperture: 2.52" (64mm)Weight: 1.0 oz (30 g)Back-focus Usage: 0.50" (12 ... Learn More
    Model#: 19882
    $30.00

  4. Optec - AP2.7 x 24tpi Extension Tube Set, 5-piece.

    Optec - AP2.7 x 24tpi Extension Tube Set, 5-piece.

    Includes ½”, ¾”, 1”, 1- ½”, and 3” extensions (#19891 through #19895)AP2 ... Learn More
    Model#: 19881
    $150.00

  5. 19800

    Optec - AP2.7 x 24tpi Extension Tube Set, 4-piece.

    Provides ¼” incremental extensions from ½” to 3-¼” Includes ½”, ¾”, 1”, and 1- ½” extensions (#19891 through #19894)AP2 ... Learn More
    Model#: 19880
    $115.00

  6. Optec - 2-" to 3"x 24 tpi male threaded mount.

    Optec - 2-" to 3"x 24 tpi male threaded mount.

    The 2-inch to 3-inch thread adapter was developed to easily adapt the Apogee and SBIG cameras and filters wheels for the TCF-S focuser.By holding tight tolerances (+/- 0.003") Optec has achieved a slip-fit that is second-to-none ... Learn More
    Model#: 17666
    $95.00

  7. Baader Planetarium - Spacer Tube 39mm for 3" RT Steeltrack, with 4" Dovetail

    Baader Planetarium - Spacer Tube 39mm for 3" RT Steeltrack, with 4" Dovetail

    The 3" RT Spacer allows changing back-focus by providing quick connect/disconnect spacing of the 3" RT Steeltrack Focuser (39mm spacing length).4" External Dovetail on one side for attachment of 3" RT Steeltrack Focuser ... Learn More
    Model#: FOC-SPCR
    $69.00

Items 41 to 47 of 47 total

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