QHY Off-Axis Guider - Small

Starting Price: $180.00
Price as Configured: $180.00
Brand: QHYCCD / SKU: QHY-OAG-S (100073)
The QHY Off-Axis Guider (OAG) has three models (QHYOAG-S,QHYOAG-M,QHYOAG-L).

This product is the Small version.

Telescope Interface M42/0.75 M54/0.75 M62/0.75
Diameter of 6 x M3 screw hole positions 54mm 62mm 68mm
Suitable for CCD/CMOS Size 1inch or smaller 4/3 inch



36 x 24mm

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About This Product
  • Compatible with QHY183m, QHY CFW3-S-SR, CFW3-S-US, and OAG-S
  • 55mm backfocus length achievable
  • 44.1 mm backfocus length achievable with adaptable Canon EF Lens and 46.5 mm backfocus length with adaptable Nikon F Lens
  • Includes:
    • 1x 8mm M42 to M48 Adapter
    • 1x 3mm M42 screwed Adapter
    • 1x Cam Top Adapter (original name QHY #020063)
    • 1x 0.5mm/1mm/2mm/3mm/7mm/10mm Spacer
    • 8x 21mm M3 screws
    • 8x 10mm M3 screws
    • 8x 12mm M3 screws
Price as Configured: $180.00

Product Help
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The main purpose of the OAG is to use the same optical path as the main camera. This avoids the problem of differential deflection that can occur when using a separate optical system for guiding. This method provides more accurate guiding and sharper images.

QHYOAG includes a precision 1.25-inch helical focuser that accepts the QHY5II and QHY5III cameras. The focusing process is comfortable. After focusing, you can lock the focus mechanism with thumbscrews.

QHYOAG is a thin and solid design. The OAG main body is just 10mm thick. Adding an M42 thread or M54 adapter ring adds only 3mm for a total thickness of 13mm. There are six 3mm through holes in the OAG for direct connection to the QHYCFW and QHY A Series cameras

There is a focuser in the QHYOAG. It is for the focus adjustment of the guider. There is a thumbscrew to lock the position. Please do not move the focus ring when in lock status to avoid the damage. When it is locked, you will still find the focus ring can be rotate a little. This is normal and the focus is not changing. The light patch hole of the QHYOAG is 7mm for the guider camera.