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69-811 EP and SVOM Transients

PI: Dong Xu

Observing instructions:

Go to the directory
  cd ~/scripts/69-811

execute the requested scripts.

Program Tracking
Proposal 69-811
Semester P69: 20240401 - 20241001
Principal Investigator Dong Xu
Programme EP and SVOM transients
Instrument ALFOSC
Time Allocation Trigger EP and SVOM transients
Total Nights 4.0
Type ToO+SoftToO
Notes Override, but should aim for (soft) triggers during Nordic service or Technical nights
Total Time Spent 12:37 (hh:mm)
Proposal Date Time Type Targets Files Comments Status
69-811 2024-04-03 00:39 ToO EP240402a ALHd030064 - ALHd030071 Observed with seeing around 1 arcsec in z, 1.5 arcsec in r, and some thin clouds. No obvious detection of a counterpart in either band. Observed
69-811 2024-04-04 00:48 ToO LXT240402A ALHd040108 - ALHd040119 The ToO was observed at an elevation of roughly 75-85 degrees. Unexpectedly, seeing was better on lower elevations this time. Observed
69-811 2024-04-09 00:00 ToO EP240408a Target could not be observed all night due to very high winds. Failed
69-811 2024-04-14 00:15 ToO ep240414a ALHd140039 - ALHd140043 The target was observed during clear sky. Seeing was 1-5''-1.8''. The data is shared with program 68-302, and the time spent was split. Observed
69-811 2024-04-15 00:37 ToO ep240414a ALHd150066 - ALHd150078 During the observations, seeing started at 1.9'' and improved to 1.5''. The r' band observations showed some signal near the two stars of the source, but yesterday it was stronger. In summary, observed filling the requirements. The data was shared with program 68-302, so the marked time spent is only half of the observation's duration. Observed
69-811 2024-04-16 00:18 ToO ep240416a ALHd160428 - ALHd160430 Observed with clear, dusty skies and seeing around 1 arcsec. Observed
69-811 2024-04-17 00:38 ToO EP240414a ALHd170178 - ALHd170185 Observed through some clouds and variable seeing around 1-1.5 arcsec. Clouds were thin enough that we could see the target in the first image, but not necessarily easy to see in all of the exposures due to the moving clouds. Observed
69-811 2024-04-18 00:22 ToO EP240414a ALHd180212-ALHd180215 ; ALHd180228 - ALHd180232 Did not observe the original OB due to clouds being in front of the target for the entire night. Data from proposal 69-811 shared: Observed through thin clouds and seeing of around 1 arcsec. On the first attempt at 01:01 UT, we only took the first two filters because the clouds became very thick afterwards. We observed files ALHd180212-ALHd180215, from 01:01 to 01:19. On the second attempt at 2:18 U.T. when clouds were finally looking thinner, we tried again, and observed only the i-band and z-band. This produced files ALHd180228 - ALHd180232. The g-band was observed correctly on the first attempt on files ALHd180212-ALHd180213. Observed
69-811 2024-04-19 00:13 ToO EP240414a ALHd190189 - ALHd190198 Observed with thin clouds and variable seeing. Observed
69-811 2024-04-20 00:24 ToO EP240414a, EP240420a ALHd200058 - ALHd200066, ALHd200104 - ALHd200108 EP240414a: Data shared by program 68-302. Observed with clear skies and 1.3-1.6'' seeing. Although observations were attempted at the maximum distance possible from the moon, several of the exposures seem to be near the limit of sky-level saturation. EP240420a: Observed with clear skies and subarc seeing. Target had to be observed somewhat close to the moon but at first glance, it didn't seem to saturate. Data shared with 68-302. Observed
69-811 2024-04-23 00:00 ToO S240422ed NCHd230098 - NCHd230147 Observed with thin clouds and seeing around 1 arcsec. Most of the data (after the 4th frame) were taken in thick clouds and is useless. OB group set to failed. 29/4-2024 AAD. Failed
69-811 2024-04-26 00:29 ToO S240422ed ALHd260240 - ALHd260248 Observed in clear skies with seeing around 0.8" Observed
69-811 2024-04-30 01:38 ToO sp1550+330, ep240425a ALHd300101 - ALHd300104, ALHd300130 - ALHd300131, ALHd300137, ALHd300142 - ALHd300150 Standard observed with clear sky and seeing around 1 arcsec. Photometry OB observed with clear sky and seeing around 2.0-2.5 arcsec. Spectra observed with clear sky and seeing around 1.0-1.5 arcsec. Observed
69-811 2024-05-02 00:18 ToO EP240414a ALHe020179 - ALHe020181 Observed in clear skies with seeing around 1.2" Observed
69-811 2024-05-03 00:59 ToO EP240414a, EP240425a ALHe030086 - ALHe030094, ALHe030124 - ALHe030126 Observed in clear skies and seeing below 1.0" Targets were observed near their peak Observed
69-811 2024-05-07 00:00 ToO -- -- Target could not be observed due to clouds. Failed
69-811 2024-05-10 00:20 ToO ep240425a ALHe100151 - ALHe100153 Observed with clear skies. The 3 images had seeing 0.68", 0.68" and 0.82". The optical counterpart is very clearly detected Observed
69-811 2024-05-12 01:04 ToO ep240425a ALHe120282 - ALHe120294 Observed with clear skies (I believe), at the lowest airmass possible. Seeing improved during the OB: g ~ 2.1", r ~ 1.3", i ~ 1.2", z ~ 1.0" Observed
69-811 2024-05-14 00:21 ToO EP240414a ALHe140071 - ALHe140075 Target observed through thin clouds, ~1.0" seeing. Observed
69-811 2024-05-17 00:25 ToO EP240425a ALHe170229 - ALHe170234 Observed with thin clouds and seeing around 1 arcsec. Observed
69-811 2024-05-28 00:34 ToO EP240425a ALHe280188 - ALHe280192 Observed near peak altitude in clear skies with seeing around 1.0" Observed
69-811 2024-05-29 00:10 ToO LXT240529A ALHe290113 - ALHe290115 Observed with clear skies and sub-arcsecond seeing Observed
69-811 2024-06-07 00:34 ToO ep240425a ALHf070135 - ALHf070139 ToO target ep240425a observed in clear skies and seeing around 1 arcsec. Observed
69-811 2024-06-08 00:19 ToO EP240608a ALHf080196 - ALHf080198 ToO target observed. Clear skies, sub arcsec seeing. Observed
69-811 2024-06-15 00:19 ToO GRB240615A ALHf150185 - ALHf150187 Target observed as soon as reasonably possible within the schedule. Observed
69-811 2024-06-18 00:21 ToO EP240617a ALHf180096 - ALHf180100 Observed with clear skies and subarcsecond seeing Observed
69-811 2024-06-19 00:32 ToO ep240618a ALHf190153 - ALHf190164 Observed with clear skies and sub-arcsec 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

Back to top Last modified: April 01 2024