Subject: Re: [sdss3-25mlog 684] 2.5m obslog 20120520 (MJD 56068)
From: Kaike Pan
Date: Mon, 21 May 2012 08:28:28 -0600
On May 21, 2012, at 5:38 AM, asimmons@apo.nmsu.edu wrote:
>=20
>                       APACHE POINT OBSERVATORY SDSS 2.5M
>=20
>                                 OBSERVING LOG
>                          Sunday May 20, 2012
>=20
>                                  (MJD 56068)
>=20
> ----  Observing Team ----
>=20
> Dmitry Bizyaev
> Audrey Oravetz
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> ---- Observing Summary ----
>=20
> The skies stayed clear the entire night, but it was dusty and the =
seeing was
> horrible. We closed for a little over 3.5 hours due to high humidity. =
We opened
> the last couple hours to gather a few more exposures with BOSS and =
APOGEE.
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> We observed:
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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> Cart 10, plate 5969
> Cart 14, plate 6023
> Cart 17, plate 4989
> Cart 8, plate 5225
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> Please clean the mirror. It needs it.
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> This afternoon we found the secondary mirror numbers to be =
significantly off
> from their nominal values. Their values were also red within the TPM =
window.
> Luckily our pointing tonight, including scale and focus adjustments, =
were not
> effected. What would cause the numbers to change when nobody was =
around the
> telescope during the day? Could this be a software issue?
>=20
  Looks like that tcc lost its connection to the secondary Galili =
controllers. If so, rebooting
the controller should fix the problem.=20
>=20
> ---- Observing Log ----