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02152016 » History » Version 14

Version 13 (Marcelle Santos, 02/15/2017 06:02 PM) → Version 14/15 (Marcelle Santos, 02/15/2017 06:03 PM)

h1. 02152016

h2. Nightly Observing Plan for MJD 57793 (starting evening of Feb 8, 2017)

1st Half night

h3. Observers

* Antonella Palmese (Obs 1)
* Marcelle Soares-Santos (Obs 2, RM)

h3. CTIO Staff

* "Staff calendar":http://www.ctio.noao.edu/cgi-bin/Calcium38.pl?Op=ShowIt&CalendarName=4m_Observing_Schedule

h3. Almanac

<pre>
mjd 57800, date 20170215, Site CTIO, UT-offset 3 hr
Current local time 15:18 CLST UT 18:18 SidTim 23:20
Sunset 20:37 CLST 23:37 UT SidTim 70 deg
Eve. -10 21:14 CLST 00:14 UT SidTim 79 deg Zeropoint; standards
Eve. -14 21:34 CLST 00:34 UT SidTim 84 deg Begin obstac
Eve. -18 21:54 CLST 00:54 UT SidTim 89 deg Last chance standards
Moonrise 23:32 CLST 02:32 UT SidTim 114 deg
Midpoint 01:57 CLST 04:57 UT SidTim 150 deg
Morn -18 06:00 CLST 09:00 UT SidTim 210 deg Begin astronomical twilight
Morn Std 06:20 CLST 09:20 UT SidTim 216 deg End obstac; begin standards
Morn -10 06:40 CLST 09:40 UT SidTim 220 deg
Sunrise 07:17 CLST 10:17 UT SidTim 230 deg
Moon position (deg): RA 209.3, Dec -6.7 Phase: 0.683
</pre>

h3. Weather Conditions

* Clear and sunny. Blue skies. No wind.
* "Detailed hourly forecast":http://www.yr.no/place/Chile/Coquimbo/Observatorio_Astron%C3%B3mico_Cerro_Tololo/hour_by_hour_detailed.html | "Satellite maps":http://139.229.115.231/web/world_sat.php
* "CTIO Weather Resources":http://www.ctio.noao.edu/noao/node/29

h3. Observing Plan and Goals for the Night

%{color:blue}* Evening Standards: Yzirg%.
<pre>
UT Date = '2017/02/16 00:14' Local time = 21:14
SDSSJ0843-0000 ra 08:43:00 dec +00:00:00 secz 1.9
GD71_CCD_35 ra 05:52:28 dec +15:58:17 secz 1.5
C26202/HST ra 03:32:30 dec -27:46:05 secz 1.1
</pre>

%{color:blue}* Nightly Defocus%. None

%{color:blue}* Obstac:%

* Start running obstac as usual, and try cosmos field observations
** if seeing worse than 1.05'' delivered in that filter, don't bother
** plan is to do i-band tonight (2 scripts, 1/2h each)
** start checking the seeing after ~1h into the night

%{color:blue}* Midpoint standard (using calspec) use only 1 (highest airmass): grizY%

<pre>
UT Date = '2017/02/16 04:57' Local time = 01:57
E6-A ra 14:45:33 dec -45:15:34 secz 1.8
SDSSJ1227-0000 ra 12:27:00 dec +00:00:00 secz 1.4
SDSSJ0958-0010 ra 09:58:00 dec -00:10:00 secz 1.2
</pre>

h3. When were the last SN fields observed?

(See https://cdcvs.fnal.gov/redmine/projects/desops/wiki/When_were_the_SN_fields_last_observed for database query.)
<pre>
hex_name seqtype last_complete
SN-X3 long_z 2017-01-26 00:55:51.528351+00:00
SN-E1 short 2017-01-27 00:53:18.591071+00:00
SN-E2 short 2017-01-28 00:53:06.852121+00:00
SN-X1 short 2017-01-28 01:14:15.665466+00:00
SN-X3 long_r 2017-01-28 01:33:29.425048+00:00
SN-X3 long_g 2017-01-29 01:04:14.492806+00:00
SN-S2 short 2017-01-29 01:17:20.589302+00:00
SN-S1 short 2017-01-29 01:36:41.706064+00:00
SN-C1 short 2017-02-05 00:47:39.788401+00:00
SN-X2 short 2017-02-05 01:07:52.108646+00:00
SN-C3 long_r 2017-02-05 01:28:05.676930+00:00
SN-C3 long_z 2017-02-05 01:56:37.995348+00:00
SN-X3 long_i 2017-02-07 00:48:18.651625+00:00
SN-C3 long_g 2017-02-07 01:23:13.185944+00:00
SN-C3 long_i 2017-02-07 01:36:25.184363+00:00
SN-C2 short 2017-02-07 02:10:23.816206+00:00

</pre>

h3. Notes from 4pm meeting

* Apply the DESDM assessment and watch for repeaters

* Cosmos scripts g,i, 15 minutes of u-band. Cosmos comes up in the middle of the half night.
Cosmos transits at midnight. Seeing better than 1.05" I-band, photometric. At 12:20 local
we can run the i-band scripts. For g- and u- the seeing threshold is weaker, 1.1".

* Translating PSF's between band:
** if i = 1.0", then g = 1.10", r=1.04", z=0.96", Y=0.95 independent of airmass.
** airmass corrections: airmass ratio to 3/5 power.