SV Notes for MJD 56255 (starting evening of November 23)


Observer 1 Observer 2 Run Manager SISPI Expert on Call Eyeball Squad QR
Elliot Bernstein [Bernstein] Elliot Gruen/March -

DECam Configuration and Setup

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


Twilight ends 21:57, middle of night to hand over to community SV at 01:29

Moonset at 04:05 83% illuminated, 25 degrees away from our Mini-Survey field on Stripe 82, bright night

Weather Conditions

Observing Plan and Goals for the Night

Note no longer any need for u-band flats or standards

  1. Standard bias and dome flat sequence during afternoon (no more u band)
  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. Make sure RASICAM is online if weather conditions permit.
  2. 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), poor tracking N of zenith.

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. Filter donuts: 30s exposure 1500 um out of focus in filters gizY. Conditions required: anything but thick clouds.
  3. SN_Observing. C3 rz Conditions required: Clear or thin clouds, <1.6" seeing.
  4. Southern survey fields: Full-depth izY(r) imaging on selected fields ??? at dec < -40. Conditions: clear or thin clouds, images <1.2"
  5. Observe MiniSurvey under OBSTAC control, should be doing izY in 1a fields. 17 pointings need izY (and others have crappy data). But with poor tracking and Moon so close to this field, these images are not likely to be useful. Conditions required: clear or thin clouds, seeing <1.6".
  6. 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: