Astro-Physics Mach 2 guiding not accurate enough

[M S]

I am wondering if someone can look at my logs and see what I am doing wrong.  I find my guiding should be better than .70"

I am not real technical so please keep that in mind.

Thank you,

Mike

[Brian Valente]

HI Mike

at first blush it looks to me like you have pretty substantial polar misalignment. Just looking at a couple of runs when you are pointing east (pier side west) all the corrections are in one direction (corrections are the bars beneath the red squiggly Dec axis)

Later on when you switched pier sides and imaged towards the west, the dec seems to be more even sided, but you switched back to default guide algorithms which isn't going to work for you Mach 2. Even so, it may point to other issues like something being loose on your mount or perhaps a snagged cable?

ALso this is the how-to guide for PHD2 with encoder mounts like the Mach 2 (just in case you haven't seen it already):

https://youtu.be/wCu8PKjDZ20

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Brian Valente

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