12282018¶

Nightly Observing Plan for MJD 58481 (starting the evening of Dec 28, 2018)¶

Observers¶

• Alexandra Amon (Observer 1)
• Antonino Troja (Observer 2)
• Ting Li (Run Manager)

CTIO Staff¶

• Manuel Hernandez, Alberto Alvarez
• Staff calendar

Almanac¶

from kentools ephem

mjd 58481, date 20181228, Site CTIO, UT-offset 3 hr
Current local time 15:41 CLST     UT 18:41     SidTim 20:28
Event      Local-Time  Greenwich  Sidereal-Time
Sunset     20:55 CLST  23:55 UT   01:41   25 deg
Eve. -10   21:36 CLST  00:36 UT   02:22   36 deg  Zeropoint; standards
Eve. -14   21:59 CLST  00:59 UT   02:45   41 deg  Begin obstac
Eve. -18   22:23 CLST  01:23 UT   03:09   47 deg  Last chance standards
Midpoint   01:45 CLST  04:45 UT   06:31   98 deg
Moonrise   01:45 CLST  04:45 UT   06:31   98 deg
Morn -18   05:07 CLST  08:07 UT   09:53  148 deg  Begin astronomical twilight
Morn -14   05:31 CLST  08:31 UT   10:17  154 deg  End obstac; begin standards
Morn -10   05:54 CLST  08:54 UT   10:40  160 deg
Sunrise    06:35 CLST  09:35 UT   11:21  170 deg
Moon position (deg): RA 187.2, Dec 3.1 Phase: 0.521

Weather Conditions¶

• 4pm local time, some thin layer clouds in the North with fast moving, wind speed 9.5 mph, humidity 41%
• Detailed hourly forecast | Satellite maps

Observing Plan¶

• DES Half night

• Evening standards
  

  UT Date = '2018/12/29 00:36'     Local time = 21:36
  SDSSJ2300-0000        ra 23:00:00  dec +00:00:00  secz 1.8
  SDSSJ0000-0000        ra 00:00:00  dec +00:00:00  secz 1.4
  SDSSJ0200-0000        ra 02:00:00  dec +00:00:00  secz 1.2
  

• run obstac

• one last g-band exposure left, take at 01:23 UT.
  • locate at /usr/remote/user/DECamObserver/ExposureScripts/DES_scripts/last.json

• if teff < 0.3 from the last.json and seeing improves then do last g-band exposure again before 02:10 UT

• at 2:15 UT (if i-band seeing < 1.1"), load these scripts:
  • MACSJ0416_g_1.json
  • MACSJ0416_u_1.json
  • MACSJ0416_r_2.json
  • scripts are located at /usr/remote/user/DECamObserver/ExposureScripts/DES_script/

• if seeing > 1.6", run the narrow-band script SN-E2-N964.json

• run obstac

• One Midpoint standards
  

  UT Date = '2018/12/29 04:41'     Local time = 01:41
  MaxVis                ra 06:30:00  dec -58:45:00  secz 1.1
  

Useful links¶

Nightsum | CTIO Night Report | DECam Logbook
Tololo Environmental Web Page | Detailed hourly forecast | Satellite maps

Notes from 4PM Meeting¶