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Orion Atlas Pro AZ/EQ-G guiding error spikes

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#1 itsyouguy

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Posted 05 August 2021 - 09:35 PM

I am seeing a large spike like this every 90 to 110 seconds. The spike can range about -6 to -12 arcseconds in RA, and always in the east direction.  Anyone know timing-wise which component in the drive system might be the culprit?  Oddly enough, it happens mainly on the scope pointing east side of pier and mainly when shooting at low altitudes.

 

Any ideas?

 

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#2 rob77

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Posted 16 August 2021 - 02:52 PM

Got the same issue with Hyst. algorithm.

 

Have a look at here: https://www.cloudyni...-phd2-and-eq-g/



#3 rob77

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Posted 24 August 2021 - 08:24 AM

Hi again,

I've done really several tests in the last days. It sounds counterintuitive, probably even weird, but using Lowpass for RA has eliminated most of the big spikes compared to the other algorithms.

 

I really do not know if there's a correlation between spikes and algorithms. What I can tell you is just that 2 nights with LP, smooth guiding.

 

It is worth a try.

 

Bests.




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