Nightly Observing Plan for MJD 56887 (starting evening of Aug 17, 2014)¶

Observers¶

• Steve Kent
• Rich Kron

CTIO staff¶

• Manual Hernandez
• Alberto Alvarez

Almanac¶

mjd 56887, date 20140817, Site CTIO, UT-offset 4 hr
Current local time 15:38 CLST     UT 19:38     SidTim 12:40
Sunset     18:26 CLST  22:26 UT   SidTim  232 deg
Eve. -10   19:02 CLST  23:02 UT   SidTim  241 deg  Zeropoint; standards
Eve. -14   19:21 CLST  23:21 UT   SidTim  246 deg  Begin obstac
Eve. -18   19:39 CLST  23:39 UT   SidTim  250 deg  Last chance standards
Midpoint   00:47 CLST  04:47 UT   SidTim  327 deg
Moonrise   01:50 CLST  05:50 UT   SidTim  343 deg
Morn -18   05:54 CLST  09:54 UT   SidTim   44 deg  Begin astronomical twilight
Morn Std   06:11 CLST  10:11 UT   SidTim   48 deg  End obstac; begin standards
Morn -10   06:31 CLST  10:31 UT   SidTim   53 deg
Sunrise    07:07 CLST  11:07 UT   SidTim   62 deg
Moon position (deg): RA 62.7, Dec 17.8 Phase: 0.488

Weather Conditions¶

Clear

Observing Plan and Goals for the Night¶

1. Afternoon calibrations - Community Observing flats & zeros
2. 2nd half observing only
3. 2 midpoint standards
4. ObsTac
5. 3 end of night standards
6. End of night calibrations
   • if good afternoon calibrations use DECam/postnight_zeros.json
   • otherwise use DECam/postnight_zeros_flats.json