Night report 2022-05-04

Night Report May 04, 2022 EFOSC2

Observer: Michel Dennefeld

Support: Mariusz Gromadzki, Nada Ihanec

TAT: Xinyue Sheng, Thomas Killestein, David O'Neill

Telescope Operators: Cecilia Farias (day), Francisco Labraña (night)

Calibrations: Bias, Arcs, Spectral Flats in late afternoon

Sky Flats: U,B,V,R,i evening sky

Night start: UT 23:28 (end of Twilight) Sky clear, Moon setting, Hum 16%, End of night: 09:53 UT (Twilight begins)

Image analysis on Std star LT3864 (start at 23:00) Seeing: 1"0

UT 23:15 Std LT 3864 Gr#13 +#11 + #16 (slit 1"5 only)

23:30 SN2022eux Follow-up Gr#11 2700s Seeing 1"0

00:24 AT2022jjt Class Gr#13 600s 0"9

00:44 SN2022qh Fo-up Gr#13 2700s

01:40 AT2022izq Class Gr#13 600s Seeing 0"75 (careful, several objects in the slit close to center! do'nt mix up)

01:58 AT2022ils Class Gr#13 900s

02:22 AT2022jkx Class Gr#13 1200s

02:50 AT2022cmc Fo-up Imaging (i band dithered) seeing 1"2 (but AM 2.20!) Guiding failure after 6 exposures

Restarted the full series again (AM 2.15!)

04:04 SN2022frl Fo-up Gr#13 1200s

04:38 AT2022fzy Class Gr#13 1200s 0"80 Crowded field !

05:10 SN2021ahpl Fo-up Gr#16 2 x 1800s, FF at the end (second exposure weak, cirrus ?)

06:48 EG274 Std star Gr #11+16+13 (1" slit) & 13 (1"5 slit)

07:07 AT2022jjf Class Gr#13 1200s Seeing 1"0

07:36 AT2022jgu Class Gr#13 900s

07:58 AT2022jja Class Gr#13 1200s 1"1

08:26 AT2022hru Class Gr#13 1000s (Cirrus)

08:49 AT2022jhn Class Gr#13 1500s 0"8 Cirrus around

09:20 AT2022izg Class Gr#13 1200s

09:45 AT2022iwt Class (redone) Gr#13 1200s

Morning Sky Flats (g,r,i) No Standard star because of cirrus