70-205 Pursuing the first lights from core-collapse supernovae: rapid follow-up observations of Einstein Probe alerts

PI: David Aguado

Observing instructions:

Go to the directory
cd ~/scripts/70-205

execute the requested scripts. CAN ONLY TRIGGER ON CAT NIGHTS!

Program Tracking

Proposal 70-205

Semester P70: 20241001 - 20250401

Principal Investigator Aguado

Programme Pursuing the first lights from core-collapse supernovae: rapid follow-up observations of Einstein Probe alerts

Instrument ALFOSC

Time Allocation Max 10 tiggers of 1 hour each

Total Nights

Type ToO

Notes Only allowed to override CAT service and CAT visitor nights

Total Time Spent 06:03 (hh:mm) Hard ToO:06:03 Soft ToO:

Proposal Date Time Type Targets Files Comments Status

70-205 2024-11-22 00:50 ToO EP241021a Sky flats were taken during twilight. Focus just before observations (lower hatch closed) Seeing around 2 arcsec Script ep241021a_bis_ep241021a_r_nov launched at 21:50; observations started around 21:50 and finished at 22:40. Seeing improved slightly.Wind gusts though the observation. Observed

70-205 2024-11-26 00:00 ToO Clouds entered around 2am preventing the observations. Failed

70-205 2024-12-13 00:00 ToO Very cloudy all night Failed

70-205 2024-12-18 00:00 ToO Target could not be observed tonight as ALFOSC was not mounted Failed

70-205 2024-12-27 01:00 ToO SN2024aecx Calibrations were done following ALFOSC coockbook for the 0.5" slit. The observing block prepared by the PI of 70-205 was completed, without changing the slit size (0.5"). Despite bad seeing conditions (~3 arcsec), the SN was clearly seen. Observed

70-205 2025-01-07 00:30 ToO SN2024aecx ALIa070141 - ALIa070144 SN2024abfo could not be observed due to clouds. SN2024aecx observed with sub-arcsecond seeing. For future triggers, please submit different transients as different groups - OB generator help states: A Group consists of all observations which _need_ to be executed in a single night (e.g., an object and a standard star). Observed

70-205 2025-01-23 01:02 ToO AT2024aepd ALIa230034 - ALIa230038 Target coordinates are actually for AT2024aepd. Observed with variable seeing (around 1.5-2 arcsec) and clear skies. Observed

70-205 2025-01-24 00:57 ToO 2024aecx ALIa240089-93 Observation performed in roughly 1-1.2'' dimm seeing when the target was culminating. No clouds, good transparency. Required conditions met. Target was easily identifiable in the acquisition images Observed

70-205 2025-01-25 00:57 ToO sn2025adj ALIa250089-93 Great conditions, 0.8'' seeing. Supernova is very bright in the acquisition images and spectrum is of very high SNR. Observed with the required conditions satisfied Observed

70-205 2025-01-26 00:47 ToO SN2025adj ALIa260108-12 Successfully performed with 1'' image seeing and as the PI requested. Clear 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 16 2024