*Observing Team*

_DES Observers:_ Cristina Furlanetto, Suk Sien Tie, David James
_Telops:_ Hernan Tirado, Alberto Alvarez
_Remote Support:_ ---

*Observing Plan*

# standard bias and dome flat sequence
# evening standard stars
# run ObsTac queue
# end of night calibrations

*Conditions*

# weather in afternoon: 4pm (local): Heavy cirrus coming in from south west.
# weather after sunset: 8pm (local): Heavy clouds still hanging on the south west; Rasicam showing the clouds creeping in. Other parts of the sky are partially cloudy. Non-photometric. Standards taken anyway.
# weather at 11:30pm (local): Heavy clouds (can barely see any stars in DECam images) and concern over precipitation (forecast to rain tomorrow morning). Closing telescope at 11:33pm.
# weather at 2am (local): Overcast - can't even see the moon!

*Accomplishments*

# Afternoon: zeros done, (ugrizYVR) dome flats done, checked, OK
# Evening: Beginning of night standards are SDSSJ2300-000 (airmass 1.8), SDSSJ2140-000 (airmass 1.3), and E8-A (airmass 1.0).
# aTmCam and GPS Monitor Checked.
# ObsTac ran until 11:30pm local time.
# Survey Exposures 480580-480650 (g, r, i, and some z bands).
# Did DECal after closing telescope.

*Problems tagged as Synopsis_Problem*

# None

*Minor Problems and Relevant Information*

# Minor issue with SISPI one hour into flat-fielding where number of image-builders down to 0 and dts > 300s. Fixed this by stopping exposures to free up image-builders.

*Notes for Data Management*

# Due to Clouds, it might be worth declaring exposures 480637-480650 as bad.