Date: Sun, 30 Oct 2011 09:38:22 -0600
From: Dan Long
Subject: Re: [sdss3-25mlog 323] 2.5m obslog 20111029 (MJD 55864)
Hi all,
    The reason for the difference in the MiG numbers is that the
readings for M2 are stale and not currently being read.  You can tell
this from the fact that the numbers in a tpm window are a steady red.
This can be solved by rebooting the MiG box on the telescope.
    I imagine most people already know where this is, but for those
who don't, it is on the side of an enclosure at the back of the
telescope on the PSS to the left of the podium, and is most easily
reached with the altitude at zenith.
				Cheers,
				  Dan
>
>>
>>  We noticed that the values for axials A, B, and C for the
>>secondary mirror were
>>  significantly off from the nominal this afternoon, which means
>>something changed
>>  from yesterday's observations. We homed and relaxed the mirror
>>hoping that it
>>  would fix itself, but it did not, even though the positional
>>errors were normal
>>  (A=-26, B=-121, C=100). We plan to observe anyway and hope that
>>the values will
>>  just end up as the new nominal ones.
>
>    Looks like two sets of MIG mirror numbers (before and after
>home/relax) are the same.  but
>actually GALLIS numbers are different.  After home/relax, commanded
>and actually GALLIS
>numbers for M2 are different.  Dan, any thought what caused this? Thanks,
>
>-kaike
>
>
>
>>
>>  BEFORE HOMING AND RELAXING:
>>  PRIMARY:
>>  --------
>>  Scale: 1.000000
>>
>>  MIGS		TONIGHT	NOMINAL
>>  Axial A:	-0.132	-0.127
>>  Axial B:	0.072	0.08
>>  Axial C:	-0.012	-0.004
>>  Trans D:	0.4101	0.40935
>>  Lateral E:	10.668	10.6553
>>  Lateral F:	12.2682	12.2809
>>
>>  GALILS
>>  Commanded:  11300 -650 5500 19150 13500 13050
>>  Actual:     11300 -650 5500 19150 13500 13050
>>
>>  SETMIR VALUES
>>  PrimDesOrient: 0.00 0.00 0.00 612.35 1325.90
>>  PrimOrient:    0.00 0.00 0.00 612.43 1325.18
>>
>>  SECONDARY:
>>  ----------
>>
>>  Focus:      0.00
>>  Air temp:   9.2
>>  Altitude:   30.0
>>
>>  MIGS		TONIGHT	NOMINAL
>>  Axial A:	-7.698	-8.408
>>  Axial B:	-7.995	-8.705
>>  Axial C:	-11.441	-12.158
>>  Trans D:	-10.038	-10.018
>>
>>  GALILS
>>  Commanded: 1577450 1611550 1562700 -9050 -6750
>>  Actual:    1577457 1611529 1562710 -9050 -6750
>>
>>  SETMIR VALUES
>>  SecDesOrient: 1257.00 13.00 8.00 -60.00 174.63
>>  SecOrient:    1257.00 13.00 8.00 -60.38 174.69
>>
>>
>>
>>  PRIMARY:
>>  --------
>>  Scale: 1.000000
>>
>>  MIGS		TONIGHT	NOMINAL
>>  Axial A:	-0.132	-0.127
>>  Axial B:	0.072	0.08
>>  Axial C:	-0.012	-0.004
>>  Trans D:	0.4102	0.40935
>>  Lateral E:	10.668	10.6553
>>  Lateral F:	12.2682	12.2809
>>
>>  GALILS
>>  Commanded:  11300 -650 5500 19150 13500 13050
>>  Actual:     11300 -650 5500 19150 13500 13050
>>
>>  SETMIR VALUES
>>  PrimDesOrient: 0.00 0.00 0.00 612.35 1325.90
>>  PrimOrient:    0.00 0.00 0.00 612.43 1325.18
>>
>>  SECONDARY:
>>  ----------
>>
>>  Focus:      0.00
>>  Air temp:   8.5
>>  Altitude:   30.0
>>
>>  MIGS		TONIGHT	NOMINAL
>>  Axial A:	-7.698	-8.408
>>  Axial B:	-7.995	-8.705
>>  Axial C:	-11.441	-12.158
>>  Trans D:	-10.038	-10.018
>>
>>  GALILS
>>  Commanded: 1577450 1611550 1562700 -9050 -6750
>>  Actual:    1577608 1612858 1561721 -9050 -6750
>>
>>  SETMIR VALUES
>>  SecDesOrient: 1257.00 13.00 8.00 -60.00 174.63
>>  SecOrient:    1257.04 13.01 7.97 -60.41 174.68
>>
>>
>>
>>  _______________________________________________
>>  Message 323 of sdss3-25mlog - Logs of nightly APO activities.
>>  sdss3-25mlog@sdss3.org
>>  https://sdss3.org/mailman/listinfo/sdss3-25mlog