Date: Tue, 15 Feb 2000 11:21:11 -0600
From: jea@fnal.gov (Anderson, John E. Jr.)
Subject: Re: 2.5-meter Obs Log (MJD 515890
Flatfield screen controls and interlocks:
Under MCP control, the interlock system will not let the flatfield screens open
unless the building is off and the telescope is above 15 degrees.
If the manual flatfield screen controller is used, the interlock system will let
the flatfield screens open at any time either inside or outside of the building.
While the manual controller is connected, the azimuth and altitude axis motions
are inhibited.
If any of the flatfield screens are detected open with the telescope inside the
building, the azimuth and altitude axis motions are inhibited.
If the building is off the telescope, there are no motion inhibits if the
flatfield screens are open.
John
"s. a. snedden" wrote:
>                      MONDAY FEBRUARY 14, 2000 (MJD 51589)
>
>                       APACHE POINT OBSERVATORY SDSS 2.5m
>
>                                OBSERVING  LOG
>
>     Observing team:     Dan Long (court photographer)
>                         Jeff Hayes              (APO)
>                         Stephanie Snedden       (APO)
>                         Jon Brinkmann           (APO)
>
>             Visitors:
>                         John Peoples            (FNAL)
>                         Alan Uomoto             (JHU)
>
> The plan: Check out the guider camera focus, then do spectroscopy,
> starting with cartridge 5, plate 317 at HA=-03:00. Concurrently, we
> would also take some bias drifts for the pipeline folks at FNAL.
>
> We opened at 17:30, in order for Dan to take some photos of John Peoples
> at the telescope. We look forward to seeing them, Dan...
>
> While setting up for the photo-op, we discovered that the flat field
> petals would not open. We tried opening from the MCP Menu and using the
> manual box. We could hear the motors activate, but not turn, so a signal
> is getting to the motors, but motion is inhibited. A bug report was
> filed. We opened the petals manually, noticing an ugly gouge in the flat
> field surface of the 04:30 petal. How long has this been there? We also
> were surprised that we were able to move the telescope upward in
> altitude from alt=2 deg with the petals open. We checked to see if an
> interlock had been bypassed, but none were. Also, when closing, we
> brought the telescope to 6 deg alitude with no problems, but the
> telescope then went out of closed loop and we could not clear the
> condition. We think this may also be related to the flat field screens
> being in some indeterminate state, preventing us from moving in
> altitude. We left the telescope at 6 deg alt, so the spectro dewars
> should be checked during the day.
>
> Jon Brinkmann checked the guider camera focus with the filter in place,
> by focusing on the moon. The guider camera was removed from the
> telescope for this check. The guider images of the moon are in
> /usrdevel/snedden/guidermoon. The guider camera was put back on the
> telescope, and the flat field lamps were then turned on to illuminate
> the fibers. Jon then adjusted the lens spacing. The best focus is seen
> in image 36 in the above directory. The problem seen over the last two
> nights appears to have been caused by bad focus. We are not sure what
> caused the focus to change or when it happened.
>
> IMAGING:
>
> We decided to start taking biases while waiting for our spectro field to
> reach the right hour angle. We followed the IOP cheat sheet procedures
> for DA set-up, with the addition of rebooting the crates before loading
> the tapes, and started a goDrift -bias. Archiving proceeded normally on
> all nodes, although we got the following message from IOP after the
> goDrift command:
>
> Mon Feb 14 21:38:19 CST 2000: No heartbeat found from ad1 in last 500 of
> murmur log
> Mon Feb 14 21:38:19 CST 2000: Mon Feb 14 21:38:19 CST 2000: Murmur not
> working for all ad1 node - Losing information!!
> Mon Feb 14 21:38:19 CST 2000: No heartbeat found from ad2 in last 500 of
> murmur log
> Mon Feb 14 21:38:19 CST 2000: Mon Feb 14 21:38:19 CST 2000: Murmur not
> working for all ad2 node - Losing information!!
> Mon Feb 14 21:38:19 CST 2000: No heartbeat found from ad3 in last 500 of
> murmur log
> Mon Feb 14 21:38:19 CST 2000: Mon Feb 14 21:38:19 CST 2000: Murmur not
> working for all ad3 node - Losing information!!
> Mon Feb 14 21:38:19 CST 2000: No heartbeat found from ad4 in last 500 of
> murmur log
> Mon Feb 14 21:38:19 CST 2000: Mon Feb 14 21:38:19 CST 2000: Murmur not
> working for all ad4 node - Losing information!
>
> After about 15 frames we got the following error messages relating to
> id2:
>
> dsc E trcErr WRONG num of pix??
> dsc E trcErr vci fiber protocol fail
>
> Run summary:
>
> Run 1152  bias 100 frames
> Run 1153  bias 250 frames
>
> As near as we can tell, everything was archived to tape normally, and we
> got no other errors during the night. We ran EndNight. It failed at the
> scp stage. Steph was running it from 'host, but here is the error
> message:
>
> Error: Enter passphrase for RSA key 'snedden@highz.apo.nmsu.edu':
> Bad passphrase.
>
> It shouldn't be asking for highz's passphrase...shouldn't it be looking
> at sdsshost? A bug report was filed.
>
> SPECTROSCOPY:
>
> We acquired stars (after an easyFiber) for plate 317, computed fiber
> rotation angles and started guiding at 21:30. Guider images have been
> copied to /userdevel/snedden/car5_plate317. Based on the guide star
> positions, we would guess that this plate is indeed drilled for
> HA=+03:00. We took 3 15 minute exposures as well. Unfortunately, these
> exposures were all taken through cloud cover. Also, because we didn't
> have control of the flat field petals, we did not take any calibrations,
> so these spectra were taken mainly for observers' practice and as a
> sanity check for the drilling.
>
> Seq 2451 Exp 2451 Frame 2451  Clouds
> Seq 2451 Exp 2452 Frame 2452  Lots of clouds!
> Seq 2451 Exp 2453 Frame 2453  Lots of clouds! Poor (or no) guiding.
> These spectra look *bad*.
>
> We then waited for a sucker hole so we could try the binned diamond
> pointing offsets. We gave it a try at 23:15 through moderate cloud
> cover.
>
> Seq 2451 Exp 2454 Frame 2454 az offset binned. Exposure too long (60
> sec).
> Seq 2451 Exp 2456 Frame 2456 az offset binned. 20 sec exposure.
> Seq 2451 Exp 2458 Frame 2458 alt offset binned. 20 sec exposure.
>
> *********************
>                                 Mirrors
> Primary:
> prim stat
> 0 2 I Received=" 1,  1,  1,  1,  1,  1 axis homed"
> 0 2 I Received=" 000004850, -000002350,  000000100, -000009500,
> 000000050, -000
> 000100 commanded position"
> 0 2 I Received=" 000004850, -000002350,  000000100, -000009500,
> 000000050, -000
> 000100 actual position"
>
> setmir values:  PrimDesOrient=0.00, -3.90, 3.90, 213.50, 213.50;
> PrimConstRMS=0.00
>
> Secondary:
> focus: 1350
> sec stat
> 0 2 I Received=" 1,  1,  1,  1,  1 axis homed"
> 0 2 I Received=" 001479800,  001466900,  001456650, -000005100,
> -000009700 comma
> nded position"
> 0 2 I Received=" 001479813,  001466881,  001456733, -000005100,
> -000009700 actua
> l position"
>
> setmir values: SecDesOrient=1163.45, 5.00, -5.00, 50.00, 42.67;
> SecConstRMS=0.00
> ********************
>
> LN2: The imager dewar was replaced at 18:00. It was less than half full.
> The spectrograph dewars were filled at 19:30 and topped off at 00:00.
> They should be checked by the day staff, since the telescope was left at
> 6 deg altitude.
>
> Tapes: The following tapes were left on the shelf for shipping to FNAL:
>         JL 1889
>         JL 1890
>         JL 1891
>         JL 1892
>         JL 1893
>         JL 1894
>         JL 1831
> Fresh tapes were put in the drives.
>
> Interlocks: No interlocks were bypassed.
>
> Software: We used IOP v3_8_3 because the current version of SOP has a
> bug in guiderFocus.
>
> Telescope: The telescope still has cartridge 5 mounted, plate 317. The
> counterweights are at 300.
>
> Weather: Skies were variably cloudy, with mostly cirrus. Winds were from
> 5-15mph out of the west, shifting to the south from 18:00-22:00, then
> back to the west. Dust particles were about 20 particles/ft^3. Relative
> humidity dropped from 65% to 45% during the night. DIMM seeing went from
> 1-1.5 arcsec when it could be measured through the clouds. Temperatures
> were warm for the season...+6C-+8C.
>
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