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09302018 » History » Version 1

Devon Hollowood, 09/30/2018 02:47 PM

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h1. 09302018
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h2. Nightly Observing Plan for MJD 58392 (starting evening of September 30, 2018)
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DES has the full night.
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h3. Observers
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* Erika Wagoner (observer 1)
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* Anqi Chen (observer 2)
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* Devon Hollwoood (Run Manager)
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h3. CTIO Staff
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* Hernan Tirado
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* Claudio Aguilera
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* Jacqueline Seron
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* "Staff calendar":http://www.ctio.noao.edu/cgi-bin/Calcium38.pl?Op=ShowIt&CalendarName=4m_Observing_Schedule
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h3. Almanac
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<pre>
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mjd 58392, date 20180930, Site CTIO, UT-offset 3 hr
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Current local time 16:38 CLST     UT 19:38     SidTim 15:33
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Event      Local-Time  Greenwich  Sidereal-Time
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Sunset     19:50 CLST  22:50 UT   18:46  282 deg
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Eve. -10   20:26 CLST  23:26 UT   19:21  290 deg  Zeropoint; standards
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Eve. -14   20:44 CLST  23:44 UT   19:40  295 deg  Begin obstac
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Eve. -18   21:04 CLST  00:04 UT   19:59  300 deg  Last chance standards
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Moonrise   01:19 CLST  04:19 UT   00:15    4 deg
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Midpoint   01:32 CLST  04:32 UT   00:28    7 deg
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Morn -18   06:01 CLST  09:01 UT   04:57   74 deg  Begin astronomical twilight
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Morn -14   06:19 CLST  09:19 UT   05:15   79 deg  End obstac; begin standards
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Morn -10   06:39 CLST  09:39 UT   05:35   84 deg
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Sunrise    07:14 CLST  10:14 UT   06:10   92 deg
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Moon position (deg): RA 82.6, Dec 20.4 Phase: 0.598
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</pre>
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h3. Weather Conditions
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*  Cloudy, with clouds expected through the night.
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*  Light wind predicted.
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* "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
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h3. Observing Plan and Goals for the Night
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* DES full night
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* Standards
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* If clouds remain, run DECal
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<pre>
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Standards for evening twilight
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UT Date = '2018/09/30 23:26'     Local time = 20:26
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SDSSJ2300-0000        ra 23:00:00  dec +00:00:00  secz 2.0
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SDSSJ2140-0000        ra 21:40:00  dec +00:00:00  secz 1.4
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E8-A                  ra 20:07:22  dec -44:37:01  secz 1.0
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</pre>
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* Obstac as long as seeing is < 1.6 arcsec
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* If bad seeing: top priority is "reverberation mapping":https://cdcvs.fnal.gov/redmine/projects/desops/wiki/Y6_reverberation_mapping_program.
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* After that: if bad seeing (1.6 arcsec < seeing < 2.0) and clear: Photosweeps
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* Otherwise if bad seeing (seeing > 1.6 arcsec) and not clear, or very bad seeing (seeing > 2.0 arcsec): Narrowband (X3 or C3)
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* Call Eric if there are problems
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* Morning standards (if clear) [grizY ordered scripts]:
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<pre>
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Standards for morning twilight 
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UT Date = '2018/10/01 09:19'     Local time = 06:19
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SDSSJ0843-0000        ra 08:43:00  dec +00:00:00  secz 1.9
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SDSSJ0320-0000        ra 03:20:00  dec +00:00:00  secz 1.3
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C26202/HST            ra 03:32:30  dec -27:46:05  secz 1.1
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</pre>
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h3. Useful links
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"Nightsum":http://des-ops.fnal.gov:8080/nightsum/ | "CTIO Night Report":http://www.ctio.noao.edu/noao/node/add/night-report | "DECam Logbook":http://system1.ctio.noao.edu:8080/ECL/decam/E/index
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"Tololo Environmental Web Page":http://139.229.115.231/web/tololo_frame.html | "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
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h2. Notes from (yesterday's) 4PM Meeting
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h2. Other Notes
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h2. Priorities (highest to lowest)
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h3. Obstac (seeing < 1.6)
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* gri to start. zY when the Moon come up.
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h3. Reverberation Mapping (seeing < 2.5)
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* See https://cdcvs.fnal.gov/redmine/projects/desops/wiki/Y6_reverberation_mapping_program.
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* The reverberation scripts use SN field pointings, and can be found in /usr/remote/user/DECamObserver/ExposureScripts/DES_scripts with names like: reverb_SN-C1.json. About 10 minutes each. If seeing improves, let the individual script finish but don't load the next. Pick the one closest to setting transit, except if it's late and E1 or E2 is nearing airmass of 1.5.
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* About 10 min each
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h3. Photosweeps (seeing < 2.0)
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* Observers generate the photo-z jsons run the photo-z script.  It's at /usr/remote/user/sispi/y6_global_photometry_program/photosweep.sh with names like: photosweep20180914-2200Z.json Select the one with timestamp closest to the next top of hour, now in UT (we got the z added).
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* Do not bother with this is there's < 30 minutes left in the night.
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* Do not bother with this program if clouds are visible on Rasicam.
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* Probably they take an hour
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h3. Narrow Band
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* Narrowband scripts are in the directory: /usr/remote/user/DECamObserver/ExposureScripts/DES_scripts
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* Names like SN-C3X-N964.json
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* Information about the transit time of thse fields can be found at http://des-ops.fnal.gov:8080/prednight/ .
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* They are on the SN fields, so select the field that is closest to transit.
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* These are expected to be about an hour long. If the clouds are only moderate, we could do these.