-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joe Zeglinski
Sent: Saturday, September 12, 2020 6:11 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Takes hours for me to polar align with PemPro...Suggestions for my AP600e?

Ray,

One thought came to me during my problematic runs – the major planets (Jupiter & Saturn) are very close to the
meridian right now, slightly south of the equatorial. This won’t matter at any other time, but for the present, is there
any chance that PEMPRO might have latched onto a bright planet, as it searched for a suitable star at say 3
degrees from the meridian? Then it is tracking something moving at “planetary rate” rather than sidereal.
Of course this conjunction would never happen again, but just a coincidence, at this time. Never happened over all
my years of using PEMPRO.

Would have been safer to target a star myself elsewhere in the nearby region, rather than take the easy & quick
choice of letting PEMPRO find something suitable like the sweet spot, at the equator, 3 degrees west of PM. Or,
maybe my change from the default of 5 degrees to 3 degrees, might have pushed the scope to the east of the PM
during its square pattern search, causing the confusion in reference direction when the drift measurement started.
Probably a stretch here.

Joe

From: Ray Gralak
Sent: Saturday, September 12, 2020 8:33 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Takes hours for me to polar align with PemPro...Suggestions for my AP600e?

Can the dew heater cause a non-stable drift alignment?

Taken from PEMPro’s polar alignment checklist:



-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Tom Blahovici
Sent: Saturday, September 12, 2020 4:36 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Takes hours for me to polar align with PemPro...Suggestions for my AP600e?

Ray,
I have two separate question threads running... one for PEM and one for polar alignment. This one is polar
alignment. Can the dew heater cause a non-stable drift alignment? It seems to go all over the place.