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Forum: Pentax K-1 & K-1 II
03-02-2019, 02:43 PM
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You can introduce problems with external magnets. First off, you have a chance of magnetizing metal parts in the camera, and then it will never calibrate accurately.
A good calibration should make your camera pretty accurate, but it has to be done carefully and with no outside magnetic interference. Cars or metal buildings can throw it off. It's hard to guess what having a strong magnet nearby would do. It will override the earth's magnetic field so your camera can't use it to get a good indication of directions.
I'm not sure I follow what you did, but couldn't you point your camera in the opposite direction from M42 and use the magnets to get a proper reading (for M42)? Of course that wouldn't allow the camera to track M42 accurately. Unless your camera is pointed at exactly the same coordinates Skysfari used, it won't read the same (even then Skysfari might have used a slightly different lookup table) and making it read those values artificially, won't get it to work correctly.
I would try a careful camera calibration without any magnetic interference (sometimes it has to be done more than once), and see what you get. Forcing the system to work using an external bias isn't exactly the way it was designed.
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