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Platesolving not as accurate

Art Trail All Messages By This Member #28777 Hello all, I just recently upgraded to the latest Gemini.net driver, as well as turned on RA/DEC 4x Step Res. I am at L6.12 on the G2 On my very next session, I was not able to accurately plate solve. The target would stay to the right, just at the edge of the FOV. NINA (PS3) would stop solving at 1' .08" or 0.52" which I thought odd that it was basically solving at 1' +/- .08". I checked my time and it is correct and set for UTC. I did not turn off the 4x Step Res option, but plan to try that tomorrow (Monday) night when it is clear again. Is this possibly the cause? Or, am I missing something more obvious. I used to be able to solve down to a few seconds, with the target perfectly centered. ? Thanks! ? Art
Paul Kanevsky All Messages By This Member #28778 Try the precession setting in Gemini.NET. You may need to change it (check or uncheck): ? ? On Sun, May 11, 2025 at 01:38 PM, Art Trail wrote: toggle quoted message Show quoted text Hello all, I just recently upgraded to the latest Gemini.net driver, as well as turned on RA/DEC 4x Step Res. I am at L6.12 on the G2 On my very next session, I was not able to accurately plate solve. The target would stay to the right, just at the edge of the FOV. NINA (PS3) would stop solving at 1' .08" or 0.52" which I thought odd that it was basically solving at 1' +/- .08". I checked my time and it is correct and set for UTC. I did not turn off the 4x Step Res option, but plan to try that tomorrow (Monday) night when it is clear again. Is this possibly the cause? Or, am I missing something more obvious. I used to be able to solve down to a few seconds, with the target perfectly centered. ? Thanks! ? Art
Art Trail All Messages By This Member #28779 Paul, that is checked. As it used to be. I would think that it should stay that way? Or am I wrong. "Gemini Calculate Refraction" in also checked. Is that OK? ? Thanks, ? Art
Paul Kanevsky All Messages By This Member #28780 On Sun, May 11, 2025 at 03:04 PM, Art Trail wrote: Paul, that is checked. As it used to be. I would think that it should stay that way? Or am I wrong. "Gemini Calculate Refraction" in also checked. Is that OK? ? Thanks, ? Art ? There's no way for me to tell if that's right or wrong for your setup, as it depends on the mix of software and drivers and all of their individual configurations. Since the error sounds within the bounds of what a J2000 to JNow precession calculation might produce, try unchecking it and see if it solves the problem. "Gemini calculates refraction" is also usually OK, but this will not cause a 1 arcminute error, especially if you're pointing 15-20 degrees above the horizon. That setting also depends on whether your software already calculates refraction in the coordinates sent to Gemini. If that's the case, you'll want to turn off that setting, also.
Art Trail All Messages By This Member #28781 Ok. I’ll give it a shot. How about “flip on goto”? Is that a good one to have enabled? Art Trail attrail1@... toggle quoted message Show quoted text On Sunday, May 11, 2025, 3:44 PM, Paul Kanevsky <yh@...> wrote: On Sun, May 11, 2025 at 03:04 PM, Art Trail wrote: Paul, that is checked. As it used to be. I would think that it should stay that way? Or am I wrong. "Gemini Calculate Refraction" in also checked. Is that OK? ? Thanks, ? Art ? There's no way for me to tell if that's right or wrong for your setup, as it depends on the mix of software and drivers and all of their individual configurations. Since the error sounds within the bounds of what a J2000 to JNow precession calculation might produce, try unchecking it and see if it solves the problem. "Gemini calculates refraction" is also usually OK, but this will not cause a 1 arcminute error, especially if you're pointing 15-20 degrees above the horizon. That setting also depends on whether your software already calculates refraction in the coordinates sent to Gemini. If that's the case, you'll want to turn off that setting, also.
Paul Kanevsky All Messages By This Member #28782 On Sun, May 11, 2025 at 05:04 PM, Art Trail wrote: How about “flip on goto”? Is that a good one to have enabled? If you're having issues with automated meridian flips, then it might be worth trying. This has no effect on plate solving or pointing accuracy.
Art Trail All Messages By This Member #28783 Thanks for your help, Paul. Art Trail attrail1@... toggle quoted message Show quoted text On Sunday, May 11, 2025, 4:10 PM, Paul Kanevsky <yh@...> wrote: On Sun, May 11, 2025 at 05:04 PM, Art Trail wrote: How about “flip on goto”? Is that a good one to have enabled? If you're having issues with automated meridian flips, then it might be worth trying. This has no effect on plate solving or pointing accuracy.
Chip Louie All Messages By This Member #28786 On Sun, May 11, 2025 at 10:38 AM, Art Trail wrote: Hello all, I just recently upgraded to the latest Gemini.net driver, as well as turned on RA/DEC 4x Step Res. I am at L6.12 on the G2 On my very next session, I was not able to accurately plate solve. The target would stay to the right, just at the edge of the FOV. NINA (PS3) would stop solving at 1' .08" or 0.52" which I thought odd that it was basically solving at 1' +/- .08". I checked my time and it is correct and set for UTC. I did not turn off the 4x Step Res option, but plan to try that tomorrow (Monday) night when it is clear again. Is this possibly the cause? Or, am I missing something more obvious. I used to be able to solve down to a few seconds, with the target perfectly centered. ? Thanks! ? Art ? This is not a Gemini 2 issues so much as one of your apps is pushing setting data or pulling setting data from elsewhere in the system.? Several other N.I.N.A. users here have reported various issues after updating their Gemini 2 L6 system which was resolved after fixing their settings.? So it is most likely that you have a configuration issue with one or more of your PC apps.? ? -- Chip Louie Chief Daydreamer Imagination Hardware? Astrospheric - South Pasadena, CA?
Art Trail All Messages By This Member #28791 Thank you Chip. Do you recall which setting? Art Trail attrail1@... toggle quoted message Show quoted text On Sunday, May 11, 2025, 11:41 PM, Chip Louie via groups.io <chiplouie@...> wrote: On Sun, May 11, 2025 at 10:38 AM, Art Trail wrote: Hello all, I just recently upgraded to the latest Gemini.net driver, as well as turned on RA/DEC 4x Step Res. I am at L6.12 on the G2 On my very next session, I was not able to accurately plate solve. The target would stay to the right, just at the edge of the FOV. NINA (PS3) would stop solving at 1' .08" or 0.52" which I thought odd that it was basically solving at 1' +/- .08". I checked my time and it is correct and set for UTC. I did not turn off the 4x Step Res option, but plan to try that tomorrow (Monday) night when it is clear again. Is this possibly the cause? Or, am I missing something more obvious. I used to be able to solve down to a few seconds, with the target perfectly centered. ? Thanks! ? Art ? This is not a Gemini 2 issues so much as one of your apps is pushing setting data or pulling setting data from elsewhere in the system.? Several other N.I.N.A. users here have reported various issues after updating their Gemini 2 L6 system which was resolved after fixing their settings.? So it is most likely that you have a configuration issue with one or more of your PC apps.? ? -- Chip Louie Chief Daydreamer Imagination Hardware? Astrospheric - South Pasadena, CA?

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