72-504 Deducing physical parameters of TDEs through spectroscopic lag studies and pre-peak spectroscopy

PI:Panos Charalampopoulos, Thomas Reynolds

Observing instructions:

Go to the directory
cd ~/scripts/72-504

execute the requested scripts.

Program Tracking

Proposal 72-504

Semester P72: 20251001 - 20260401

Principal Investigator Panos Charalampopoulos, Thomas Reynolds

Programme Deducing physical parameters of TDEs through spectroscopic lag studies and pre-peak spectroscopy

Instrument ALFOSC

Time Allocation 64 hours SoftToO

Total Nights 64h

Type SoftToO

Notes Soft triggers during Nordic service or Technical nights

Total Time Spent 08:25 (hh:mm)

Proposal Date Time Type Targets Files Comments Status

72-504 2025-10-10 00:30 SoftToO Wolf1346, AT2025vjw ALIj100058 - ALIj100062, ALIj100063 - ALIj100067 Observed with clear sky and seeing about 0.6'' Observed

72-504 2025-10-25 00:20 SoftToO AT2025vjw, GOTO25iqe, HD19445 ALIj250071-ALIj250080 Observed under very light clouds and seeing around 1". Observed

72-504 2025-10-27 00:21 SoftToO AT2025vjw ALIj270056 - ALIj270060 Observed under clear sky/thin clouds and seeing 1.2". Observed

72-504 2025-10-30 00:38 SoftToO AT2025abqg, HD19445 ALIj300088 - ALIj300092 , ALIj300132 - ALIj300136 Shared standard star due to having identical setup. Clear skies and good seeing. Observed

72-504 2025-11-10 00:38 SoftToO BD174708, AT2025vjw ALIk100057 - ALIk100061 , ALIk100086 - ALIk100090 Clear, dark skies and good seeing. Observed

72-504 2025-11-17 01:12 SoftToO AT2025abcr, HD19445 ALIk170110 - ALIk170115, ALIk170164 - ALIk170168 Observed under clear sky and seeing around 1". Observed

72-504 2025-11-23 00:54 SoftToO HD19445, AT2025aclf ALIk230120 - ALIk230124, ALIk230129 - ALIk230133 Clear skies, and the seeing was oscillating between 1.5" and 2.0". Observed

72-504 2025-12-01 00:46 SoftToO AT2025vjw, BD174708 ALIl010066 - ALIl010070, ALIl010081 - ALIl010085 Science target observed with clear skies and seeing around 1.2". Needed to be aborted due to being up-wind in high wind. Marked as failed, but let us know if this can be changed to observed. Standard observed with clear skies and seeing around 1.2". Failed

72-504 2025-12-16 01:37 SoftToO AT2025abcr, AT2025afvr, HD19445 ALIl160082 - ALIl160087, ALIl160098 - ALIl160102, ALIl160204 - ALIl160208 Observed with clear skies and seeing around 2". The last exposure for AT2025abcr had to be read out two minutes early due to a fault, closing the mirror covers. Please let us know if the observation should be marked as failed because of this. Observed

72-504 2025-12-30 00:55 SoftToO BD174708, AT2025vjw ALIl300071 - ALIl300085 Observed through thin clouds and seeing of below 1 arcsec. Observed

72-504 2026-01-09 00:34 SoftToO AT2025afvr, HD19445 ALJa090092 - ALJa090096, ALJa090107 - ALJa090111 Target observed with clear skies but above 2" seeing Observed

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

Last modified: September 12 2025