When doing calibration at the beginning of a session on PhD2, there are always 5 steps DEC has to make before the calibration star starts moving north. Is this what other users notice too?
That's why they say in the PHD2 best practices manual to manually pulse the mount to the North until you see stars moving in the guide cam display BEFORE initiating a calibration.
I know that. I was inquiring to see if others saw a similar backlash as the AM5 is advertised as having little to no backlash.
PHD2 reported upwards of 4500ms backlash on my first AM5. My current one has 2300ms give or take. Those are max numbers. They change, sometimes dramatically, every time I run the GA. They are belt driven, so they still have backlash.
KC_Astro_Mutt PHD2 reported upwards of 4500ms
Phd2 reported 4400ms for mine but it still guides in 0.4-0.7 RMS. Puzzling??
It seems to be the norm.
Is ZWO listening? Any comment on those huge DEC backlash amounts users are reporting? Any fix or adjustment we can make?
They say it's a non-issue. See their response to my initial question here: https://bbs.astronomy-imaging-camera.com/d/15711-very-large-backlash-in-new-am5/63
2 Meanwhile, according to the analysis of the DEC error principle and the experiences of other users, such backlash won't make the guiding statistics any worse. This is because the DEC axis doesn't need any movement if the polar alignment is very accurate; If the polar alignment is not correct, it will only cause a one-way correction of the DEC axis in the guiding procedure, in which case the backlash will not affect the guiding performance.
