Night Report 2018-12-31

Observers: Alessandro Razza & Jonathan Pineda Garcia

Support: Mariusz Gromadzki

TAT: Cosimo Inserra & Lluís Galbany

Calibrations:

EFOCS:

biases

arcs gr11, gr13, gr16 (evening & morning)

arcs gr18 and gr20 (evening)

Weather:

Start: Humidity 37.8, wind speed 3.4 m/s.

Middle: Humidity 36.9 ,wind speed 1.4 m/s.

End: Humidity 41.2 ,wind speed 3.3 m/s. Thin clouds.

Comments: Good seeing. Low thin clouds from UT 05:45 up the end of the night.

Instrument - EFOCS

UT Target Type Setup airmass Seeing notes

-----------------------------------------------------------------------------------------

00:44 AT2018fyk Follow-up gr13 1.48 0.8

01:36 GD71 STD gr11+13+16* 1.79 1.0

02:13 AT2018jmt Follow-up gr16 1.32 0.8

03:13 AT2018jmt Follow-up gr11 1.22 0.7

04:07 AT2018kzr Follow-up gr11 1.44 0.8

04:56 AT2018kzr Follow-up gr11 1.27 0.8

05:44 AT2018kzr Follow-up gr16 1.18 1.0

06:45 AT2018kzr Follow-up gr16 1.16 1.0 Exposure with passing thin clouds.

07:49 LT3864 STD gr11+13+16** 1.02 1.0

08:03 AT2018hyz Follow-up gr11 1.17 1.0

* slit 1.0 - 1.5

**slit 1.0