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70-811 EP Transients

PI: NTE (Fynbo/Xu)

Observing instructions:

Go to the directory
  cd ~/scripts/70-811

execute the requested scripts.


Program Tracking
Proposal 70-811
Semester P70: 20241001 - 20250401
Principal Investigator NTE
Programme Einstein Probe transients
Instrument ALFOSC
Time Allocation 20h hard ToO and 20h SoftToO
Total Nights 4
Type ToO+SoftToO
Notes Override, but should aim for (soft) triggers during Nordic service or Technical nights
Total Time Spent 18:02 (hh:mm)
Proposal Date Time Type Targets Files Comments Status
70-811 2024-10-18 00:15 ToO BL-Lac ALHj180113 - ALHj180132 Target observed with clear skies and sub-arcsecond seeing. Observed
70-811 2024-10-22 00:51 ToO EP241021a ALHj220114 - ALHj220118, ALHj220180 - ALHj220184 The optical counterpart was identified in z' and r' images. The conditions were great, sub- arcsecond seeing. Observed
70-811 2024-10-23 00:32 ToO EP241021a ALHj230148 - ALHj230152, ALHj230167 - ALHj230171 Observed with clear sky and seeing better than 1 arcsec. Shared with 70-301 by 70-811 Observed
70-811 2024-10-24 00:26 ToO EP241021a ALHj240145 - ALHj240153 Observed with clear sky and seeing around 0.5-0.7 arcsec. Observed
70-811 2024-10-26 00:00 ToO EP241021a ALHj260179 - ALHj260182 Bad weather only allowed a part of the observation to be taken in thin clouds with high seeing Failed
70-811 2024-10-28 00:52 ToO EP241021a ALHj280004 - ALHj280012 Observed with clear skies and seeing around 1.5 arcsec Observed
70-811 2024-10-30 00:51 ToO EP241021A ALHj300110 - ALHj300118 The target was observed through thin clouds. The optical counterpart is still well distinguishable from the frames. Seeing was ~0.8''. Observed
70-811 2024-11-01 00:18 ToO EP241101a ALHk010143 - ALHk010145 Very light cloud coverage, average seeing around 0.6 arcsec Observed
70-811 2024-11-02 00:26 ToO EP241021a ALHk020100 - ALHk020103 Thin cloud coverage in the beginning of the observations, cleared up after the first observation. Average seeing around 1 arcsec. Observed
70-811 2024-11-03 00:29 ToO EP241021a ALHk030105 - ALHk030109 Thin clouds and sub-arcsec seeing Observed
70-811 2024-11-07 01:19 ToO EP241107a, HD19445 ALHk070003 - ALHk070011; ALHk070021 - ALHk070024 First observation was conducted through thin clouds. The next observation had to be aborted halfway through the third spectrum due to low visibility. The standard star observation was taken with thin clouds, after the last attempt at the main target Observed
70-811 2024-11-08 00:31 ToO EP241021a ALHk080051 - ALHk080055 Observed through thin clouds and seeing of around 1.3 arcsec. Observed
70-811 2024-11-09 00:40 ToO EP241021a ALHk090149 - ALHk090154 Observed through thin clouds and seeing of around 1 arcsecond. Observed
70-811 2024-11-11 00:25 ToO EP241111a ALHk110147 - ALHk110155 Target observed with clear skies and variable seeing around 1.5 to 2 arcsec. Observed
70-811 2024-11-13 00:00 ToO Could not observe target due to bad weather Failed
70-811 2024-11-14 00:00 ToO None None Due to humidity being at 100% all night was it not possible to observe anything. Failed
70-811 2024-11-27 00:21 ToO EP241126a ALHk270156 - ALHk270164 Observed in clear skies with seeing around 2.5" All exposures were increased to 240 s Observed
70-811 2024-11-28 01:00 ToO EP241021a ALHk280054 - ALHk280058, ALHk280063 - ALHk280063, ALHk280069 - ALHk280077 Observed in cloudy, dusty skies with seeing around 1.3" Needed several attempts to finish the target due to incoming clouds Observed
70-811 2024-12-02 00:35 ToO epj03352630, ep241201a ALHl020097 - ALHl020101; ALHl020153 - ALHl020155 First target was observed successfully. Second target had to be re-observed later in the night as the first image was not deep enough. Observed
70-811 2024-12-03 00:30 ToO epj03352630 ALHl030276 - ALHl030280 Target observed with clear skies and seeing around 3 arcsec. Observed
70-811 2024-12-08 01:31 ToO ep241208a,ep241208a ALHl080059 - ALHl080068 ALHl080059 - ALHl080068 Observed with 1 arcsec seeing and some thin clouds. Observed
70-811 2024-12-10 00:21 ToO EP241210a ALHl100054 - ALHl100059 Observed
70-811 2024-12-17 00:36 ToO ep241217a STHl170006 - STHl170014 First images suffer from scattered clouds, but from 4th image ok and a source is seen. Observed
70-811 2024-12-28 00:00 ToO ep241217a ALHl280095 - ALHl280096 very bad seeing, auto closing (humidity) Failed
70-811 2024-12-29 01:00 SoftToO EP241021a ALHl290150 - ALHl290158 OK Observed
70-811 2025-01-02 01:00 SoftToO EP241021a ALIa020080 - ALIa020088 Seeing around 0.7 arcsec and clear skies Observed
70-811 2025-01-09 01:18 ToO EP250109a, EP250108a, EP250108A,
EPJ1349_45
ALIa090079 - ALIa090100, ALIa090196 - ALIa090200 Clear night with excellent conditions and good seeing. r and z band data of ep250108a shared TO 70-301, g and i band data shared FROM 70-301, per agreement. Observed
70-811 2025-01-10 00:40 ToO EP250108A, EP250111a ALIa100181 - ALIa100189; ALIa100278 - ALIa100280 Both targets observed according to requirements. The first target was shared with proposal 70-301 so the time was shared. The second target was observed within minutes of receiving the ToO trigger, and slightly extended the observing period to 12x100s instead of 9x100s, as it was testing for an optical counterpart. The OB time shows a 3x100s time since the PI requested us to shorten the original OB exposure time, so we have manually added the extra time. Observed
70-811 2025-01-12 00:27 SoftToO EP250108a ALIa120058 - ALIa120066 Seeing around 1 arcsec and clear skies Observed
70-811 2025-01-14 00:48 SoftToO ep250108a STIa140002 - STIa140012 Target observed with clear skies and 1.0" seeing. However we could not observe it right at the start of the night due to high wind speeds in the direction of the target, so we waited until it was outside the wind direction to observe, which was around 22:15. 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

Back to top Last modified: September 16 2024