Big "tail" in PHD2 log viewer Frequency Analysis

[Tom Kennedy]

Greetings,

I have my guiding pretty well dialed in but even though the Frequency Analysis shows that my 300 second peak is fine (~3" p-p), all the charts show this big tail off to the right.   My stars are nice and round so it is not a big deal to me, but I am just wondering what this "tail" represents.

Thanks in advance!

Tom

[Brian Valente]

Hi Tom

that's normal polar alignment drift, nothing to be concerned about

it roughly corresponds with the big arch you see here in your RA:

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Brian 

Brian Valente

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[Tom Kennedy]

Thanks Brian - that is what I figured.   Thanks for all you do with PHD2 - I wrestled with it for a while with my CEM60 but after being patient and following instructions carefully it works very well.   I am imaging at about 1.7"/pixel so guiding at 0.6 "/pixel works out great for me!

Tom

On Wednesday, October 2, 2019 at 8:05:25 AM UTC-7, Brian Valente wrote:

Hi Tom

that's normal polar alignment drift, nothing to be concerned about

it roughly corresponds with the big arch you see here in your RA:

On Wed, Oct 2, 2019 at 6:18 AM Tom Kennedy <tomz...@gmail.com> wrote:

Greetings,

I have my guiding pretty well dialed in but even though the Frequency Analysis shows that my 300 second peak is fine (~3" p-p), all the charts show this big tail off to the right.   My stars are nice and round so it is not a big deal to me, but I am just wondering what this "tail" represents.

Thanks in advance!

Tom

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