Perseus 4-port Instrument Selector
Perseus 4-port Instrument Selector
Perseus 4-port Instrument Selector
Perseus 4-port Instrument Selector


Perseus 4-port Instrument Selector

Regular price
$ 3,750.00
Sale price
$ 3,750.00
Unit price

This item is out of stock but you can place an order now and we’ll ship when it becomes available.


Optec's new 4-port Instrument Selector allows the remote observatory user the ability to remotely select any of four instrument packages attached to their telescope.

This is Optec's new 4-port instrument selector.   The photo shows a top view of the selector with two different CCD cameras, a single channel SSP photometer, and a separate TCF-S focuser and eyepiece.  Any variety of instrument packages can be configured and used.

The 4-port selector is being demonstrated in the video below on a Meade 8-inch Schmidt Cassegrain telescope. However, it's really designed for at least a C11 class telescope. This is a robust design and intended for permanent observatory instruments only.

Perseus Back-Focus dimensions


  • Overall Height: 7.00" (17.8cm)
  • Main Body Diameter: 4.25" (10.8cm)
  • Weight: approx. 5 lb. (2.25 kg)
  • Telescope Adapter: OPTEC-3600 Female Dovetail Mount
  • Instrument Ports: Three 2-inch & One 3-inch
  • Primary Port #1: 
    • Mechanical Interface:  OPTEC-3600 Male Dovetail
    • Clear Aperture:  3.0" (76mm)
    • Back-focus usage:  4.5" (11.4 cm)
  • Secondary Ports #2, #3, #4:
    • Primary Mechanical Interface: OPTEC-2400 Male Dovetail
      • Clear Aperture: 2.1" (53mm)
      • Back-focus usage:  4.3" (11.0cm)
    • Secondary Interface: Knurled Parfocal adjusting OPTEC-2300 Receiver
      • Clear Aperture: 1.9" (48mm)
      • Back-focus usage:  5.0" to 5.5" (12.7cm to 14cm)
      • Total Parfocal Travel:  0.5" (12.7mm)
      • Mounting Options: T-thread, SCT thread, C-mount, Pentax
  • Control Interface: Push-button Selection
  • Communications Interface: RS-232 serial with DB9 connector
  • Software Interface: Dedicated Applet and serial command interface

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