#17858 - OPTEC-3600 Dovetail to AstroPhysics 2.7" Female Threaded Adapter


In Stock: 9


The #17858 adapter is designed for use with the Perseus 4-port Instrument Selector.  This adapter will convert the large 3-inch port on the instrument selector into a female AP2.7 receiver.

Allows direct attachment of any AP2.7 spacer or other accessory having a male AstroPhysics 2.7" thread mount. The AP2.7 Spacer Set can be used to set the back-focus of a wide variety of instrument packages. 

  • Outside Diameter:  3.95" (100.3mm)
  • Overall Height: 0.5" (12.7mm)
  • Clear Aperture:  2.7"  (68.6mm)
  • Weight: 3.04 oz (86.2 g)
  • Back-focus Usage: 0.5" (12.7mm)
  • Telescope Side Connection: OPTEC-3600 Dovetail Receiver
  • Camera Side Connection::  AstroPhysics 2.7"  Female Thread