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Thank you for the input! Inline answers:

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Some questions for you.? First, what did the PE look like before it started to misbehave?? Generally when a system is guiding well it generally will continue to guide well until you change something.

In general, occasionally good (0.41" RA, 0.41" Dec, 0.59" RMS was best I've seen back in October 2024), mostly so-so to bad PE/guiding (0.8-1.2" RA and Dec, 1-1.5" combined)

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So what did you change?? Different scope?? Different auto guiding system? Different guide camera? Did you change your autoguiding software?? Any software updates?? Update ASCOM?

The SVX140 replaces a 102 f7 scope in October 2024. Same basic system, rotator, FW, focuser, camera, Mele3c, GL.iNet router.

I have used both a 210mm f4 guidescope with ASI290 2.9uM px binned x2 and binned x11, and a QHY OAG-M with same camera. Neither seems absolutely better, but I did root out some issues with the OAG and Rotator interaction for PHD2. Some of my earlier guiding issues were undoubtedly related to the rotator not conveying Rot angle to PHD2. This has been fixed.

Always have used NINA, with PHD2 guiding. Always RA is Predictive PEC at 239.34s fixed, and Resist Switch Dec.

Softwares are current. ASCOM drivers were updated recently (January) to handle behavior issues with older Wanderer Mini Rotator.

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What firmware is your Gemini 2 on?

HC Firmware 1.61 8/2/23

Mainboard??? 6.02 1/29/24

Servo??????????? RA 3.0 Dec 3.0

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Do you have tucked servos and spring loaded worms??

Tucked servos and SLW.

Thanks!

Dale

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Chip Louie Chief Daydreamer Imagination Hardware?

Astrospheric Forecast - South Pasadena, CA?

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