SV Notes for MJD 56250 (starting evening of November 18)


Observer 1 Observer 2 Run Manager SISPI Expert on Call Eyeball Squad QR
Elliot Kent Gerdes Elliot Gruen/March Ogando

DECam Configuration and Setup

SISPI Configuration File sv.ini
Proposal ID 2012B-0003
Image Processing (Calibration) NCSA
Image Processing (First Cut) NCSA


Twilight ends 21:52, middle of night to hand over to community SV at 01:28

Moonset at 01:08 34% illuminated, 85 degrees away from our Mini-Survey field on Stripe 82. All grey night

Weather Conditions

Observing Plan and Goals for the Night

  1. Standard bias and dome flat sequence during afternoon
  2. Please try to get dome open for temperature equilibration at earliest appropriate time, be sure all cooling/ventilation systems are on.
Monitor Conditions:
  1. Check on DIMM status, running if at all possible. [Jiangang: I noticed the DIMM seeing changes over the past 3 days, but they change once and fixed there. See my attached image]
  2. Make sure RASICAM is online if weather conditions permit.
  3. A few times per night ask the operator to contact the other telescopes on Tololo to get their seeing value. Record those in the eLog.

Expectation for tonight is clear weather, decent seeing, tracking with modest ellipticity (<~0.1), poorer tracking N of zenith?

Note: SN observations are particular about the pointing, but it is ok to accept whatever pointing the telescope produces when doing standards and minisurvey.

Obstac should be configured to allow observations to X<1.5

Prioritization for tonight's observations:
  1. Photometric standards sequence as soon as dark enough (ugrizY in 3 fields at different airmasses, preferably one at X < 1.25, one at X = 1.25-1.65 and one at X > 1.65) and again at handover to Dara. Conditions: clear or thin clouds, any seeing.
  2. Observe MiniSurvey to complete gr. Conditions required: clear or thin clouds, seeing <1.6".
  3. SN_Observing. Repeat gr deep sequences for field X3. Conditions required: Clear or thin clouds, <1.6" seeing.
  4. Alignment_Observing. Conditions required: Clear or thin clouds, stable <1.2" seeing, hexapod responding to commands, BCAM data being logged. Choose a spot S of -30 degrees with X<1.3 and lowest available Galactic Latitude (highest stellar density).
  5. SPT-CL J2332-5358. Complete with Full-depth i observations. Conditions required: Clear or thin clouds, <1.3" seeing.
  6. Observe MiniSurvey under OBSTAC control, should be doing izY in both 1a and 1b fields. Conditions required: clear or thin clouds, seeing <1.6".
  7. DECal sweeps Conditions required: Any.

Notes from the 4PM Meeting and Additional Comments

Notes from Observers

See Night summary

TASCA b-filter animated GIF for this night (time stamp in UT):
TASCA b-filter animated GIF for this night

Notes on Analyses of Night's Data: