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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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