Optec TCF-Leo Low Profile Focuser 19740

Optec TCF-Leo Low Profile Focuser 19740

Optec FastFOCUS Secondary Mirror Focusing Systems for Catadioptrics

Optec FastFOCUS Secondary Mirror Focusing Systems for Catadioptrics

Optec-DSI 3.5x24tpi Threaded Adapters and Extensions

$0.00
Optec-DSI standard 3-1/2” x 24tpi threaded adapters and extension tubes. Anti-reflection threaded, ultra-flat black painted and baked interior finish with no internal reflections guaranteed.
SKU
1937

Price Range: $0 to $250

19802 Optec-DSI 3.5x24tpi (male) thread to OPTEC-3600 dovetail adapter. $95.00 

19889 Optec-DSI 3.5x24tpi Extension Tube Set, 4-piece. $175.00 Provides ¼” incremental extensions from ½” to 3-¼” Includes ½”, ¾”, 1”, and 1- ½” extensions (#19891 through #19894 below) 19890 Optec-DSI 3.5x24tpi Extension Tube Set, 5-piece. $235.00 Includes ½”, ¾”, 1”, 1- ½”, and 3” extensions (#19891 through #19895 below)

19891 Optec-DSI 3.5x24tpi Extension Tube, ½” length. 

19892 Optec-DSI 3.5x24tpi Extension Tube, ¾” length. 

19893 Optec-DSI 3.5x24tpi Extension Tube, 1” length. 

19894 Optec-DSI 3.5x24tpi Extension Tube, 1-½” length. 

19895 Optec-DSI 3.5x24tpi Extension Tube, 3” length. Optec-DSI 3.5x24 adapters are typically mounted male end toward telescope. The 3-inch extension tube is baffled

19896 Optec-DSI 3.5x24tpi (male) to AstroPhysics 2.7” female adapter. 19897 Optec-DSI 3.5x24tpi knurled female threaded retaining ring. $25.00 Use this locking ring to set the back-focus distances at exactly the distance required. 1/10” thick, Gold anodized.

19898 M90x1mm female to Optec-DSI 3.5x24tpi female thread adapter. 

19899 M117x1mm female to Optec-DSI 3.5x24tpi female thread adapter. Converts Astrotech rear cell thread to Optec-DSI 3.5x24tpi thread spec for stronger spacer sets with improved resolution.

19905 Optec-DSI 3.5x24tpi male thread to 2-inch receiver with brass compression ring. Accepts 2-inch eyepieces, star diagonal, or 2-inch camera nosepiece.

19910 Optec-DSI 3.5x24tpi male thread to OPTEC-2400 male dovetail adapter. 

19912 Optec-DSI 3.5 x 24tpi male thread to male T-thread adapter. 

19913 Optec-DSI 3.5 x 24tpi male thread to 2” x 24tpi SCT male thread adapter. 

19914 Optec-DSI 3.5 x 24tpi male thread to STL 2.156” x 24tpi male thread adapter. 

19915 Optec-DSI 3.5 x 24tpi male thread to 3” x 24tpi male thread adapter. 

19916 Optec-DSI 3.5 x 24tpi male thread to M92x1mm male thread adapter. 

19917 Optec-DSI 3.5 x 24tpi male thread to M72x1mm male thread adapter. 

19920 Optec-DSI 3.5x24tpi male thread to PlaneWave SecureFit. Use with Optec-DSI adapter #17748 for drop-in replacement of SecureFit 2-1/2” spacer

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