Optec AP 2.7 x 24tpi Threaded Adapters and Extensions

AP 2.7 x 24tpi Threaded Adapters and Extensions AstroPhysics standard 2.7” x 24tpi threaded adapters and extension tubes.

19870 M90 x 1mm female thread to AP2.7 Female threaded adapter. $75.00 Converts GSO / AstroTech AT8RC spacer tubes to AP2.7 standard.

19879 AP2.7 x 24tpi to T-thread adapter. $85.00 Includes internal thread for Takahashi Collimation Scope. (equivalent to RCOS T-2-AP adapter)

19880 AP2.7 x 24tpi Extension Tube Set, 4-piece. $115.00 Provides ¼” incremental extensions from ½” to 3-¼” Includes ½”, ¾”, 1”, and 1- ½” extensions (#19891 through #19894 below)

19881 AP2.7 x 24tpi Extension Tube Set, 5-piece. $150.00 Includes ½”, ¾”, 1”, 1- ½”, and 3” extensions (#19891 through #19895 below) 19882 AP2.7 x 24tpi Extension Tube, ½” length. $30.00 19883 AP2.7 x 24tpi Extension Tube, ¾” length. $30.00 19884 AP2.7 x 24tpi Extension Tube, 1” length. $30.00

19885 AP2.7 x 24tpi Extension Tube, 1-½” length. $30.00

19886 AP2.7 x 24tpi Extension Tube, 3” length. $40.00

19887 AP2.7 x 24tpi male to male thread adapter. $60.00

19888 AP2.7 knurled female threaded retaining ring. $15.00 Use this locking ring to set the back-focus distances at exactly the distance required. 1/10” thick, Gold anodized.