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20 Aug 2017
INDI development team is happy to announce the release of INDI Library v1.5.0. This new exciting release builds on the maturity of INDI Library and comes with many new supported devices and fixes for existing drivers.
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TOPIC: PA routine and solver question

PA routine and solver question 2 months 2 weeks ago #19145

If I have done a polar alignment in ekos and am same within 7" and start over why would I get this result from the solver?
Solution coordinates: RA (13h 41m 42s) DEC ( 89° 24' 02\") Telescope Coordinates: RA (12h 59m 07s) DEC ( 90° 00' 00\")
Why would I be so far off in RA and DEC. I have checked that the local time, time zone and location are the same between the mount and kstars. The alignment routine seems to work ok (going to compare it with a PHD2 drift align if my skies ever clear up again), I am just trying to understand how the numbers could be that different.

Thanks,
Eric

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PA routine and solver question 2 months 2 weeks ago #19146

This is with telescope simulator? It's not perfect, and as you get near the poles, the number can easily jump around. Your mount starts in an idealized position which is seldom spot-on.

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Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?

PA routine and solver question 2 months 2 weeks ago #19148

knro wrote: This is with telescope simulator? It's not perfect, and as you get near the poles, the number can easily jump around. Your mount starts in an idealized position which is seldom spot-on.


This is not with the telescope simulator, it is with my Losmandy Gemini 2.

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PA routine and solver question 2 months 2 weeks ago #19150

Even with a real mount. It starts with idealized values. Only after syncing (hopefully away from the pole) does it start reflecting the 'real' sky.

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Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?

PA routine and solver question 2 months 2 weeks ago #19225

  • gerryr
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If you have cone error and other alignment issues between mount and telescope, then the solution for center of the camera field will often not be the same as the polar axis of the mount. The polar alignment is about the center of the RA axis, not about the center of the camera field, and the two are rarely the same.

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