Subject: Re: [sloan-25mlog 1997] 2.5m obslog 20141201 (SJD 56993)
From: "John K. Parejko"
Date: Tue, 2 Dec 2014 16:15:00 -0500
A bit more (not helpful) follow-up on the problems from the beginning of =
last night:
On Dec 2, 2014, at 6:00 AM, viktorm@apo.nmsu.edu wrote:
>                       APACHE POINT OBSERVATORY SDSS 2.5M
>=20
>                                 OBSERVING LOG
>                          Monday December 01, 2014
>=20
>                                  (SJD 56993)
>=20
> Remarks:
> Telescope is not a slewing at the evening, We have problem with gang =
connector
> pin position (look at the yesterdays Log).=20
> We tried to use Bypass 'gangPodium' and 'gangCart'. That is can not =
help to us.
> So we call to John P.
>=20
> John fixed a problems at ~00:55Z. So, the telescope can slewing =
without any bypass in.=20
I didn't "fix" anything, and digging through the logs has found no =
obvious problem. When the gotofield was issued, SOP commanded the FF =
lamps on and then just sat there, but didn't report any error. When I =
restarted it in a debugging mode to look for errors, I didn't see any.
Under normal circumstances, sop gotoField should turn on the FF lamps, =
close the FFS, and issue tcc axis status (or just start the slew if the =
axes are clear) all at about the same time. That this didn't happen last =
night leaves me very perplexed: there were no errors and all the threads =
were reporting that they were alive.
So, I'm very confused here. This definitely qualifies as a unknown =
unknown, and I've got no suggestions about what to do were it to happen =
again.
John
--
*************************
John Parejko
john.parejko@yale.edu
http://www.astro.yale.edu/~jp727/
203 432-9759
JWG 465
Department of Physics
Yale University
New Haven, CT
**************************