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Observers: H. Lin, Hansen
Almanac for Cerro Tololo:
long. 4 43 16 (h.m.s) W, lat. -30 09.9 (d.m), elev. 2215 m
Chilean Daylight Savings Time used before 2 AM
2005 Mar 13 and after 2 AM 2005 Oct 9; standard zone = 4 hrs W
For the night of: Thu, 2005 Dec 8 ---> Fri, 2005 Dec 9
Local midnight = 2005 Dec 9, hr UT, or JD 2453713.625
Local Mean Sidereal Time at midnight = 3 28 34.8
Sunset ( 2215 m horizon): 20 44 CDT; Sunrise: 6 27 CDT
Evening twilight: 22 12 CDT; LMST at evening twilight: 1 41
Morning twilight: 4 59 CDT; LMST at morning twilight: 8 28
12-degr twilight: 21 37 CDT --> 5 34 CDT; night center: 1 35 CDT
Moonset : 2 37 CDT
Moon at civil midnight: illuminated fraction 0.578
0.7 days since first quarter, RA and dec: 23 46 29, -2 06.6
The sun is down for 9.7 hr; 6.8 hr from eve->morn 18 deg twilight.
2.4 dark hours after moonset and before beginning of twilight.
*** Hourly airmass for BCS2300-55 ***
Epoch 2000.00: RA 23 30 00.0, dec -55 12 00
At midnight: UT date 2005 Dec 9, Moon 0.58 illum, 53 degr from obj
Local UT LMST HA secz par.angl. SunAlt MoonAlt
21 00 0 00 0 28 0 58 1.123 28.3 -5.3 60.8
22 00 1 00 1 28 1 58 1.187 52.1 -16.0 53.1
23 00 2 00 2 28 2 58 1.308 70.1 ... 42.4
0 00 3 00 3 29 3 58 1.509 84.4 ... 30.5
1 00 4 00 4 29 4 58 1.840 96.7 ... 18.1
2 00 5 00 5 29 5 59 2.407 108.1 ... 5.4
3 00 6 00 6 29 6 59 3.482 119.2 ... ...
4 00 7 00 7 29 7 59 5.968 130.4 ... ...
5 00 8 00 8 29 8 59 15.466 142.0 -17.8 ...
6 00 9 00 9 30 9 59 (v.low) 154.2 -7.3 ...
*** Hourly airmass for BCS0530-52 ***
Epoch 2000.00: RA 5 30 00.0, dec -52 42 00
At midnight: UT date 2005 Dec 9, Moon 0.58 illum, 86 degr from obj
Local UT LMST HA secz par.angl. SunAlt MoonAlt
21 00 0 00 0 28 -5 02 1.884 -99.0 -5.3 60.8
22 00 1 00 1 28 -4 02 1.520 -87.4 -16.0 53.1
23 00 2 00 2 28 -3 02 1.303 -73.9 ... 42.4
0 00 3 00 3 29 -2 02 1.174 -56.6 ... 30.5
1 00 4 00 4 29 -1 01 1.105 -32.5 ... 18.1
2 00 5 00 5 29 -0 01 1.083 -0.7 ... 5.4
3 00 6 00 6 29 0 59 1.103 31.4 ... ...
4 00 7 00 7 29 1 59 1.170 55.8 ... ...
5 00 8 00 8 29 2 59 1.296 73.3 -17.8 ...
6 00 9 00 9 30 3 59 1.509 86.9 -7.3 ...
Standard Fields:
Sunset:
CNOC2_0223A 02:25:48 00:07:48.0 2000 (X=1.36) 30s exp
CNOC2_0223B 02:26:00 00:43:12.0 2000 (X=1.37) 30s exp
DEEP2_2330 23:29:50 00:12:01.0 2000 (X=1.19) 30s exp
CFRS_2215 22:17:48 00:18:10.3 2000 (X=1.35) 30s exp
DEEP2_0230 02:29:58 00:38:09.4 2000 (X=1.38) 30s exp
Transition (12AM):
CDFS 03:32:28 -27:48:30.0 2000 (X=1.002) 5s exp
Sunrise:
CDFS 03:32:28 -27:48:30.0 2000 (X=2.1) 5s exp
E2_a 04:03:00 -44:47:00.0 2000 (X=1.62) 5s exp
DLS_0520-49 05:20:00 -49:00:00.0 2000 (X=1.29) 5s exp
E3_a 06:42:54 -45:10:06.0 2000 (X=1.10) 5s exp
E4_a 09:23:44 -45:26:02.0 2000 (X=1.06) 5s exp
PLAN:
Afternoon: obtain bias and dome flats
9.10PM: adjust the pointing
9.30PM: standard stars fields (z, i, r, g)
DEEP2_0230 30s-exposure: DEEP2_0230_30s.ocs
DEEP2_2330 30s-exposure: DEEP2_2330_30s.ocs
9.45PM: slew to science field and check pointing: BCS23hrstar.ocs
focus in i and adopt established filter offsets
10.00PM: begin science observations: BCS23hr_dec8.ocs (i,z)
12.00AM Transition
Standard (g,r,i,z): CDFS 03:32:28 -27:48:30.0: CDFS_5s.ocs
12.30AM: Photo-z fields (i,z) : photo-z_CNOC2B_CDFS_dec8.ocs
CNOC2B
CDFS
2.00AM: slew to science field
check pointing: BCS5hr30minstar.ocs
then focus in i and adopt the established filter offsets
2.15AM: begin science observations: BCS5hr30min_dec8.ocs (i,z)
5.00AM: standard star fields (g,r,i,z)
DLS_0520-49 5s exp: DLS_0520-49_5s.ocs
E2_a 5s exp: E2_a_5s.ocs
E4_a 5s exp: E4_a_5s.ocs
6.00AM: finish observation, tape/scp the raw data, fillout nite-reports, get weather info
*********** Log- ***********
Afternoon
ARCON rebooted
mkdir bcs051208
bias done
December 8, 2005
flats done
scp of zeros and flats started
~8:55PM Haze toward E horizon, cirrus low on W horizon, otherwise looks good
9:10PM Check pointing z-band
test 0.5 sec; mscdisp test zs- zr+; zpt; teloffset -209.2 -20.8
9:12PM Confirm with 2nd exposure
test 0.5 sec; mscdisp test zs- zr+; zpt; teloffset -9.2 -8.9
9:24PM Doing standards: DEEP2_0230_30s.ocs (zirg order) airmass 1.27
seeing 1.15 (g)
9:36PM DEEP2_2330_30s.ocs (zirg order) airmass 1.27
seeing 0.84 (i)
g was missed due to missing last carriage return
in OCS script; we're already slewing to the 23hr field
so we'll skip this
9:43PM Moved to science field to check pointing: BCS5hr30minstar.ocs
r-band
test 0.5 sec; mscdisp test zs- zr- z1=1000. z2=30000.; zpt; teloffset 31.3 30.8
9:46PM Confirm with 2nd exposure; teloffset 0 0
9:50PM go to 23hr science field and focus
settemp T = 13.9, best guess 16420
focus
title "focus T=13.9 i"
focus 16420
increment 75, exptime 10, 9 exposures
mscfocus focus054; picking stars in amps 4 and 5,
~2/3 of way up from bottom of display
best focus 16230, seeing 0.71 (i)
9:59PM go to science field BCS23hr_dec8.ocs
10:07PM BCS2323-5530Ci 055: seeing ~0.95 (i)
10:12PM BCS2323-5530Cz 056: seeing 0.9 (z)
10:22PM BCS2323-5606Ai 057: seeing 0.85 (i)
10:36PM BCS2323-5606Bi 059: seeing 0.8 (i), staying sub-arcsec
11:39PM Before BCS2336-5606Cz 068
IRAF window in arcon unresponsive, got error messages about header in DCA
window; T.O. suggested cntr-C in IRAF window which interrupted the
OCS script but got us keyboard response back
Do "mosocs BCS23hr_dec8.ocs resume+ pos=14" and started again
11:43PM image id number set back to 055: BCS2336-5606Cz.051209_0239.055.fits
11:48PM exposure is not proceeding
11:51PM Arcon ended and restarting; not successfully
11:55PM Arcon and tram box were power cycled
Hernan + electrical technician are working on problem
12:12AM moved BCS2336-5606Cz.051209_0239.055.fits and
BCS2336-5606Ci.051209_0227.067.fits
into /ua84/mosaic/Mohr/bcs051208/save and then
scp'ed both of them to des.cosmology.uiuc.edu
067 is causing problems with QL
copied 055 back up to /ua84/mosaic/Mohr/bcs051208/
but with id number set correctly to 068
12:23AM We appear to be back; lost about 45 min
moving to CDFS standard
12:25AM CDFS_5s.ocs (griz order) airmass 1.0
12:34AM Starting photo-z (iz) photo-z_CNOC2B_CDFS_dec8.ocs
~12:50AM Hernan explains to us that tonight's problem was due
to a TCS/router-related computer program
which needed to be restarted, rather than to
a problem with arcon.
1st arcon crash last night required power cycle of several
electronics boxes to fix.
2:05AM Check pointing at BCS5hr30minstar.ocs
z-band
test 0.5 sec; mscdisp test zs- zr- z1=1000. z2=30000.; zpt; teloffset 27.8 14.0
~2:15AM go to BCS5hr30min_dec8.ocs and focus
settemp T = 13.0, best guess 16535
focus
title "focus T=13.0 i"
focus 16530
increment 85, exptime 10, 9 exposures
mscfocus focus054; picking stars in amps 4 and 5,
~2/3 of way up from bottom of display
best focus 16333, seeing 0.8 (i)
2:18AM Start on science field BCS5hr30min_dec8.ocs
2:25AM BCS0539-5300Ai 086: seeing 1.02 (i) (1.09 from QL);
DIMM is up at 1 arcsec
5:16AM Going to standards DLS_0520-49_5s.ocs (griz) airmass 1.37
5:24AM E2_a_5s.ocs (griz) airmass 1.87
5:33AM E4_a_5s.ocs (griz) airmass 1.04
5:40AM Finish observation
tape/scp the raw data,
fillout nite-reports, run pipeloop, weather info download