Nightly Observing Plan for MJD 58399 (starting evening of October 17, 2018)¶
DES has the full night.
- Andres Plazas (observer 1)
- Daniel Gruen (observer 2, Run Manager)
- (Ben Moews had to depart due to family emergency)
- Manuel Hernandez
- Claudio Aguilera
- Staff calendar
from kentools ephem
mjd 58409, date 20181017, Site CTIO, UT-offset 3 hr Current local time 15:10 CLST UT 18:10 SidTim 15:12 Event Local-Time Greenwich Sidereal-Time Sunset 20:01 CLST 23:01 UT 20:04 301 deg Eve. -10 20:37 CLST 23:37 UT 20:40 310 deg Zeropoint; standards Eve. -14 20:57 CLST 23:57 UT 20:59 315 deg Begin obstac Eve. -18 21:17 CLST 00:17 UT 21:19 320 deg Last chance standards Midpoint 01:28 CLST 04:28 UT 01:30 22 deg Moonset 03:35 CLST 06:35 UT 03:38 54 deg Morn -18 05:39 CLST 08:39 UT 05:41 85 deg Begin astronomical twilight Morn -14 05:58 CLST 08:58 UT 06:01 90 deg End obstac; begin standards Morn -10 06:18 CLST 09:18 UT 06:21 95 deg Sunrise 06:54 CLST 09:54 UT 06:57 104 deg Moon position (deg): RA 312.1, Dec -18.0 Phase: 0.599
Observing Plan and Goals for the Night¶
- DES full night
- Evening standards
UT Date = '2018/10/17 23:37' Local time = 20:37 SDSSJ0000-0000 ra 00:00:00 dec +00:00:00 secz 1.8 SDSSJ2300-0000 ra 23:00:00 dec +00:00:00 secz 1.4 SDSSJ2140-0000 ra 21:40:00 dec +00:00:00 secz 1.2
- Obstac as long as seeing is < 1.6 arcsec
- doing five missing reverberation mapping fields (C1, C2, C3, S1, S2) when seeing is bad or they culminate (3am / 6am UT), whichever comes first. After that if seeing is bad pick according to the following criteria.
- If bad seeing (1.6 arcsec < seeing < 2.0) and clear: Photosweeps
- Otherwise if bad seeing (seeing > 1.6 arcsec) and not clear, or very bad seeing (seeing > 2.0 arcsec): Narrowband
- Morning standards
UT Date = '2018/10/18 08:58' Local time = 05:58 SDSSJ0933-0005 ra 09:33:00 dec -00:05:00 secz 1.9 SDSSJ0843-0000 ra 08:43:00 dec +00:00:00 secz 1.5 MaxVis ra 06:30:00 dec -58:45:00 secz 1.1
Notes from 4PM Meeting¶
Priorities (highest to lowest)¶
Reverberation Mapping (seeing < 2.5)¶
- See https://cdcvs.fnal.gov/redmine/projects/desops/wiki/Y6_reverberation_mapping_program.
If "seeing is Bad" & Seeing better than 2.5" Modest cloud cover okay (same as DES probably okay)
10 json scripts, one for each SN fields. Total 98 minutes.
see http://des-ops.fnal.gov:8080/prednight/ for transit times.
The reverberation scripts use SN field pointings, and can be found in
with names like: reverb_SN-C1.json
Photosweeps (seeing < 2.0)¶
- If RM is finished & If "Bad Seeing" and photometric and not worse than 2.0" => do Photosweep.
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 python script at CTIO to generate the jsons.
having done that THE Photosweep scripts can be found in
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.
- If "Bad Seeing" and not photometric, then do narrowband. Description:
Narrowband scripts are in the same directory as photosweep.
Names like SN-C3X-N964.json
They are on the SN fields, selection criteria are given on the above wiki page.
These are expected to be about an hour long. If the clouds are only
moderate, we could do these.
Put in the DQ as normal.
Obstac if seeing isn't bad.