Sagitta Off-Axis Guider

#19340 - Motorized Off-Axis Guider for Astrophotography


Optec engineers designed the Sagitta OAG to provide a solution for remote imagers who require the ability to adjust guide camera focus independently of the imaging camera focus.

Remote Focus for Guide Camera

Sagitta Off-Axis GuiderFeaturing a full 3-inch (76.2mm) clear aperture, Sagitta includes a high-quality fully multi-coated pick-off prism with 12.5mm clear aperture to the guide camera. Sagitta features a large brass split-clamp for attachment of any 1-1/4” format guide camera with plenty of range for setting the guide camera parfocal to the imaging camera. Adjusting the prism stalk height can be accomplished with a single tool and provides prism engagement adjustment of 12mm. Overall, guide camera adjustments exceed 42mm while the OAG body thickness is held at only 31.75mm or 1-1/4”.

How to Order:

Contact any Optec dealer, call Toll-Free 1-888-488-0381, email, or visit our ecommerce site:

Controller Compatibility:

The standard FocusLynx Controller hub can easliy be converted into a Dual-Focus Controller with the addition of the optional Second Stepper Driver board.

  • Optec FocusLynx controller,
  • Starlight Instruments FocusBoss II controller.

Featuring an easy-to-install board with a double row connector, the Second Stepper Driver pushes directly into the main FocusLynx control board.  Full details for the #19533 Secondary Stepper Board are available here.    Review the video to see how easy converting your FocusLynx into a Dual Focus controller can be. 

Installation Instructions:

Click here for the Sagitta Off-Axis Guider Installation instructions in pdf format - revision 3.

Additional Details and Resources:

Optec has developed a new shorter 3-inch dovetail to fit the Sagitta and older MOAG off-axis guiders.  See the full OPTEC-3000-S dovetail spec sheet for details.  Order custom adapters from Precise Parts.

Additional Product Views:

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