12072018¶
Nightly Observing Plan for MJD 58460 (starting the evening of Dec 7, 2018)¶
Observers¶
- Larissa Markwardt (Run manager)
- Nikolay Kuropatkin (Observer 1)
- Martin Murphy (Observer 2)
CTIO Staff
- Hernan Tirado, Claudio Aguilera (night assistant)
- Staff calendar
Almanac¶
from kentools ephem
mjd 58460, date 20181207, Site CTIO, UT-offset 3 hr Current local time 16:31 CLST UT 19:31 SidTim 19:54 Event Local-Time Greenwich Sidereal-Time Sunset 20:43 CLST 23:43 UT 00:06 2 deg Moonset 20:58 CLST 23:58 UT 00:22 6 deg Eve. -10 21:23 CLST 00:23 UT 00:47 12 deg Zeropoint; standards Eve. -14 21:46 CLST 00:46 UT 01:10 18 deg Begin obstac Eve. -18 22:10 CLST 01:10 UT 01:34 24 deg Last chance standards Midpoint 01:35 CLST 04:35 UT 04:58 74 deg Morn -18 04:59 CLST 07:59 UT 08:22 126 deg Begin astronomical twilight Morn -14 05:23 CLST 08:23 UT 08:46 132 deg End obstac; begin standards Morn -10 05:46 CLST 08:46 UT 09:09 137 deg Sunrise 06:26 CLST 09:26 UT 09:50 148 deg Moon position (deg): RA 265.7, Dec -20.0 Phase: 0.044
Weather Conditions¶
- At 16:00 a few small clouds, warm (18 degrees)with a slight breeze (9 mph), humidity 36%
- Tonight: Very cloudy: 75% high cloud cover and the beginning of the night, dropping to 22% by the end, 10 degrees, light breeze. Humidity ~50%.
- Detailed hourly forecast | Satellite maps
Observing Plan and Goals for the Night¶
- DES Full night
- Evening standards
UT Date = '2018/12/08 00:23' Local time = 21:23 SDSSJ2140-0000 ra 21:40:00 dec +00:00:00 secz 1.7 SDSSJ0320-0000 ra 03:20:00 dec +00:00:00 secz 1.5 SDSSJ0100-0000 ra 01:00:00 dec +00:00:00 secz 1.2
- Morning standards
UT Date = '2018/12/08 08:23' Local time = 05:23 SDSSJ1227-0000 ra 12:27:00 dec +00:00:00 secz 2.0 SDSSJ1048-0000 ra 10:48:00 dec +00:00:00 secz 1.3 SDSSJ0843-0000 ra 08:43:00 dec +00:00:00 secz 1.2
Useful links¶
Nightsum | CTIO Night Report | DECam Logbook
Tololo Environmental Web Page | Detailed hourly forecast | Satellite maps
Notes from 4PM Meeting¶
Calibrations are underway. Telescope and camera are good.
For tonight:
- OBSTAC
- If seeing is bad (Bad means if the psf is > 1.6 arcsec for several exposures in a row with no sign of improvement) complete Photosweep, then Narrowband (details below). If running Narrowband, prioritize E2.
Photosweep
----------
If you have "Bad Seeing" and photometric and not worse than 2.0", do
Photosweep. Instructions can be found here:
https://cdcvs.fnal.gov/redmine/projects/desops/wiki/Y6_global_photometry_program
Do not bother with this program if clouds are visible on Rasicam or if
seeing is highly variable, for the varying aperture corrections make
it difficult to get to mmag accuracy.
One needs to run a script at CTIO to generate the jsons (see the
instructions wiki page). Having done that the Photosweep scripts can
be found in
/usr/remote/user/DECamObserver/ExposureScripts/DES_scripts
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). Do not bother with this is there's < 30
minutes left in the night. A script probably takes an hour.
Narrowband
----------
If "Bad Seeing" and not photometric, or if "Bad Seeing" and everything
else if done, then do Narrowband. Instructions and a description can be found here:
https://cdcvs.fnal.gov/redmine/projects/desops/wiki/Narrowband_SN_imaging_programNarrowband scripts are in the same directory as Photosweep, and have names like SN-C3X-N964.json
They are on the SN fields, so select the field that is closest to transit. Transit time for SN fields can be found on this page:
http://des-ops.fnal.gov:8080/prednight/These are expected to be about an hour long. If the clouds are only moderate, we could do these.