ENR CTIO Blanco 4-m 2014-11-28

*Observing Team*

 

_DES Observers:_ Nikolay Kuropatkin (Obs1), Chris Smith (Obs2), Lucy Clerkin (RM) 

_Telops:_ Rodrigo Hernandez (Obs Support), Claudio Aguilera (Night Support)

_Remote Support:_ ---

 

*Observing Plan*

 

# Standard bias, standard flats

# evening standard stars 

# run ObsTac queue

# end of the night standard star

# end of night calibrations 

 

*Conditions*

 

# weather in afternoon 17:00 (local): cloud cover except for some clear patches in the north west, 16.5C , wind 5.7 mph, humidity 37%

# at sunset 20:30 local: clouds over most of sky, 14.0C, wind 5.1 mph, humidity 36%

# at start of OCS, 21:38 local: clouds over most of sky, 13.2C, wind about 2mph, humidity 37%

# 00:15 local: clouds thinning, 12.7C, wind about 10mph, humidity 31%

# 00:15 local: RAISED WINDSCREEN due to wind consistently >5mph

# 01:40 local: still thin clouds, 11.6C, wind 8.6mph, humidity 25%

# 03:20 local: thin clouds, 11.2C, wind 9.5mph, humidity 41%

# 04:10 local: clouds thicker, 10.5C, wind 9.5mph, humidity 41%

# 05:20 local: clouds, 9.8C, wind 9.2mph, humidity 45%

 

# weather summary: variable clouds, 11-13C, humidity 25-45%

# Seeing conditions: ~0.8-2.0 depending on band, variable during night

# Wind conditions: wind 5-10 mph

 

*Accomplishments*

 

# Afternoon:  SISPI restarted, zeros done, (YziVRrgu) dome flats done, flats checked OK

# about 19:30 local time: dome open

# Begin of night: zero point Correction: RA Offset -2.6, Dec Offset 1.4

# NO Standards due to clouds

# 21:38 local time: start OCS queue; still under clouds

# Started with SUPERNOVAE, field E1 (griz)

# SN E1, i-band (382515), psc reports 1.17mag of extinction, t(eff)=0.02

# Continued with SUPERNOVAE, field E2 (griz)

# SN E2, g-band (382519), psc reports 1.44mag of extinction, t(eff)=0.01

# continued with SUPERNOVAE, field X1 (griz)

# SN X1, r-band (382526), psc reports 1.35mag of extinction, t(eff)=0.01

# continued with SUPERNOVAE, field X2 (griz)

# SN X2, r-band (382532), psc reports 1.30mag of extinction, t(eff)=0.01

# continued with SUPERNOVAE, field X3 (griz) deep

# SN X3, r-band (382541), psc reports 0.11mag of extinction, t(eff)=0.23

# continued with SUPERNOVAE, field S2 (griz)

# SN S2, r-band (382664), psc reports 0.26mag of extinction, t(eff)=0.30

# continued with SUPERNOVAE, field S1 (griz)

# SN S1, r-band (382570), psc reports 0.14mag of extinction, t(eff)=0.43

# continued with SUPERNOVAE, field C3 (griz)

# SN C3, r-band (382578), psc reports 0.15mag of extinction, t(eff)=0.66

# seeing getting worse toward end of C3 sequence

# 04:10 local: FINISHED SUPERNOVAE, start wide-field survey

# clouds seem to be coming in again, psc reporting heavy (1 to 3mag) extinction

# 05:25 local: end Obstac, still cloudy, NO standards

 

 

*Problems tagged as Synopsis_Problem*

 

# Rasicam: off

# DIMM: on

 

 

*Minor Problems and Relevant Information*

 

# none.

 

*Notes for Data Management*

 

# cloudy all night, highly variable clouds, extinction from 0.25 to 4mag