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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
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