Search
Text Size:
Smaller Text Normal Text Larger Text

Facebook page YouTube channel

BlueSky profile YouTube channel

72-018 Polarimetric Monitoring of the Repeating TDE AT2022dbl

PI: Karri Koljonen


Monitoring program using ALFOSC/FAPOL

The coordinates of the target are:
RA (J2000) = 12:20:45.01
DEC(J2000) = +49:33:04.68

Calibrations: Twilight flats + alfosc-calibs
To summarise:

Go to the directory
  cd ~/scripts/72-018
List the available scripts
  ls -lrt

and execute the OB generated scripts requested in the trigger email.

Date UT window Duration [hh:mm] Comments
13-11-2025 04:50-SAT 01:05 preferred time just before SAT
18-11-2025 04:30-SAT 01:05 preferred time just before SAT
23-11-2025 04:15-SAT 01:05 preferred time just before SAT
27-11-2025 04:00-SAT 01:05 preferred time just before SAT
01-12-2025 03:40-SAT 01:05 preferred time just before SAT
12-12-2025 03:00-SAT 01:05 preferred time just before SAT
17-12-2025 02:40-SAT 01:05 preferred time just before SAT
21-12-2025 02:20-SAT 01:05 preferred time just before SAT
26-12-2025 02:00-SAT 01:05 preferred time just before SAT
30-12-2025 01:45-SAT 01:05 preferred time just before SAT
07-01-2026 01:15-SAT 01:05 preferred time just before SAT
12-01-2026 01:00-SAT 01:05 preferred time just before SAT
17-01-2026 00:30-SAT 01:05 preferred time UT5-UT6
23-01-2026 00:15-SAT 01:05 preferred time UT5-UT6
28-01-2026 23:50-SAT 01:05 preferred time UT4:30-UT5:30
06-02-2026 23:20-SAT 01:05 preferred time UT4-UT5
12-02-2026 23:00-SAT 01:05 preferred time UT3:30-UT4:30
18-02-2026 22:30-SAT 01:05 preferred time UT3-UT4
22-02-2026 22:15-SAT 01:05 preferred time UT3-UT4
28-02-2026 21:50-SAT 01:05 preferred time UT2:30-UT3:30
07-03-2026 21:30-SAT 01:05 preferred time UT2-UT3
13-03-2026 21:00-SAT 01:05 preferred time UT1:30-UT2:30
19-03-2026 EAT-SAT 01:05 preferred time UT1-UT2
24-03-2026 EAT-SAT 01:05 preferred time UT1-UT2
29-03-2026 EAT-SAT 01:05 preferred time UT0:30-UT1:30

Program Tracking
Proposal 72-018
Semester P72: 20251001 - 20260401
Principal Investigator K. Koljonen
Programme Polarimetric Monitoring of the Repeating TDE AT2022dbl
Instrument ALFOSC
Time Allocation 25 obs every 5 days from early December
Total Nights 27h
Type Monitoring
Notes Fixed dates to be scheduled
Total Time Spent 08:37 (hh:mm)
Proposal Date Time Type Targets Files Comments Status
72-018 2025-11-13 00:00 Monitoring 100% humidity Failed
72-018 2025-11-18 00:00 Monitoring Late HardToOs came in. Failed
72-018 2025-11-23 00:00 Monitoring Could not be observed due to cloudy weather. Failed
72-018 2025-11-27 00:00 Monitoring - - Missed due to unmet seeing requirement Failed
72-018 2025-12-01 01:06 Monitoring ALIl010697 - ALIl010706 AT2022dbl Observed with clear skies and seeing around 1.4". Observed
72-018 2025-12-12 00:00 Monitoring none none Ice and storm. No opening Failed
72-018 2025-12-17 00:00 Monitoring - - Guide stars couldn't be found due to clouds. Failed
72-018 2025-12-21 00:31 Monitoring AT2022dbl ALIl210223 - ALIl210227 Many attempts, only one successful observation... I hope. Observed
72-018 2025-12-26 01:04 Monitoring AT2022dbl ALIl260454 - ALIl260463 Clear skies, and the seeing was around 1.0". Observed
72-018 2025-12-30 01:05 Monitoring AT2022dbl ALIl300185 - ALIl300194 Observed through clear skies and approx. 1 arcsec. seeing. Observed
72-018 2026-01-07 00:00 Monitoring - - Missed due to weather. Failed
72-018 2026-01-12 00:00 Monitoring Due to high levels of humidity, the telescope was closed from 23:15 and it was not possible to carry out the observations. Failed
72-018 2026-01-17 00:00 Monitoring 100% humidity Failed
72-018 2026-01-23 00:33 Monitoring AT2022dbl ALJa230325 - ALJa230329 Block 1 failed, block 2 was observed under clear sky and fluctuating seeing. Please review data. Observed
72-018 2026-01-28 01:05 Monitoring AT2022dbl ALJa280215 - ALJa280224 Observed with clear skies and good seeing. Observed
72-018 2026-02-06 00:00 Monitoring Missed due to weather Failed
72-018 2026-02-12 01:03 Monitoring AT2022dbl ALJb120353 - ALJb120357, ALJb120359 - ALJb120363 Observed through thin clouds and approx. 1.3 arcsec. seeing. Observed
72-018 2026-02-18 01:05 Monitoring AT2022dbl ALJb180313 - ALJb180322 Target's observed with clear skies and sub 1" seeing at the start of the exposures. Observed
72-018 2026-02-22 01:05 Monitoring AT2022dbl ALJb220272 - ALJb220281 Observed under clear skies and seeing around 1". Observed
72-018 2026-02-28 00:00 Monitoring Attempted to observe targets, but thick clouds kept moving in the way and oservations had to be interrupted. Failed

 

The above information is collected from the ToO/Mon reports that have been created by the observer.

Should any of the observations have been carried out using the OB system, you will find additional information HERE

Back to top Last modified: October 15 2025