is our thin and solid design OAG which can easily bonded with our Indigo Filter Wheel. The OAG supports through holes (M2 and M3) in its body for direct connection with latest CMOS cameras and other Filter Wheels.

The main advantage having an OAG is that it used the same optical path with your main imaging camera. This avoids any issue with differential flexure that can occur when using a separate guidescope on top of your main telescope.

Thin Design

Indigo OAG has a very thin design. Its backfocus is 10mm + 4mm of the telescope adapter. 14mm in total. OAG is CNC made of airplane 6061 aluminium alloy which ensures a lightweighted and solid piece of equipment.

Adjustable prism

The prism height can be easily adjusted to allow better illumination of the field of view of the guiding camera. If your imaging camera sensor is large, the prism can be moved (and secured with set screws) upwards to disallow blockage of the sensor’s optical path.

Large mirror

A 12×8 mm fully multicoated & anti-reflection mirror offers high illumination to your guiding camera. Stars are round and bright across the OAG ‘s field.

Large Size

Indigo OAG supports the 62mm through hole pattern for direct connection with latest CMOS cameras and Filter Wheels.

Guiding camera connection accepts C threaded guide cameras

Orientation of image train framing can be achieved by the 3 screws that allow telescope adapter to slide inside the slots.

Solid design for heavy load of imaging gear

Indigo Filter Whell and OAG direct mount combination

Indigo OAG + Telescope Adapter (included)

The thickness is 10mm and is design is solid enough to support heavy imaging equipment.

The clear apperture is 53.5mm.

Package Includes:

  • a M54 threaded adapter for telescope connection. (adds thickness of 4mm)
  • a M48 threaded adapter for telescope connection. (adds thickness of 4mm)

Indigo Filter Wheel Combination

The Indigo OAG can be directly mounted onto the Indigo Filter Wheel.
A combination of both products sum a 19mm + 14mm (33mm total) of backfocus optical distance.

Indigo FW and OAG

Indigo Filter Wheel and OAG direct mount combination