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Mike Harden

Rosette Nebula NGC 2238

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ONAG XM with Astigmatism Corrector [custom QHY CFW3-L adapter also available]

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I am offering an Innovations Foresight On-Axis Guider [ONAG XM} in excellent condition.  The ONAG XM has an imaging port for full-frame sensors [up to 50mm diagonal] and guiding port for helical focuser for guide cameras up to APS-C size sensors with 28mm diagonal.

It allows the astroimager to image and guide with the same telescope - its robust construction handles large CCD/CMOS cameras, and the adjustable X/Y guiding port enables multi-star guiding.

Included is the Innovations Foresight Astigmatism Corrector - the corrector minimizes the ONAG dichroic beam splitter induced astigmatism providing diffraction limited guide stars.

Also available is a PreciseParts custom QHY CFW3-L to IFI ONAG XM adapter.

The ONAG XM scope and imaging ports (SP, IP) use a 59mm dovetail system for rigid connections with the scope imaging train (focuser, rotator, focal reducer, etc) and imaging/filter wheel equipment.
The ONAG XM guide port uses a T2 (M42 x 0.75mm) male thread for connection to a guide camera.