Subject: Re: [sloan-25mlog 1952] 2.5m obslog 20141028 (SJD 56959)
From: Dan Long
Date: Wed, 29 Oct 2014 08:31:11 -0600
Hi Patrick and Howard,
   Remember that until the software is updated, that you need to issue =
an axis stop between the time you reach instrument change and when you =
release the stop button and initialize the telescope to move again. =20
  This will prevent any accumulated error in axis position from being =
applied to the servo loop on initialization and potentially triggering =
oscillations.
		Cheers,
		   Dan
On Oct 29, 2014, at 6:49 AM, pgaulme@apo.nmsu.edu wrote:
>=20
>                       APACHE POINT OBSERVATORY SDSS 2.5M
>=20
>                                 OBSERVING LOG
>                          Tuesday October 28, 2014
>=20
>                                  (SJD 56959)
>=20
> ----  Observing Team ----
>=20
> Howard J. Brewington
> Patrick Gaulme
>=20
>=20
.
.
.
> 2) When going from instrument change to stow (before going to 5 to =
close the=20
> enclosure), the rotator started to oscillate. We tcc axis stop than =
pushed the=20
> stop button. We started over with releasing the stop button, tcc axis =
init, and=20
> stow, and that solved the problem.=20
>=20