This is a set of instructions for NOT monitoring programme P70-502
(PI:Håkon Dahle), scheduled for service observations. The purpose is to monitor
three of the five currently known gravitationally lensed quasars where the
lens is a galaxy cluster. The main purpose of the observations is to use the
light curves to make time delay measurements between multiple lensed quasar
images in order to estimate the value of the Hubble constant. We will also
determine the level of microlensing in each lens system.
The target information and the observing strategy are reported below.
Please let us know whether you carried out these observations.
For the "monitoring" observations use
the script indicated by the OB.
For these observations use the appropriate script for the date, complie the
OB if needed.
| Proposal |
Date |
Time |
Type |
Targets |
Files |
Comments |
Status |
|
| 70-502 |
2024-10-07 |
00:38 |
Mon |
COOLJ0335-1927, COOLJ0542-2125 |
ALHj070310 - ALHj070312, ALHj070360 - ALHj070362 |
Observed in clear skies with seeing around 1.0" |
Observed |
|
| 70-502 |
2024-10-08 |
00:18 |
Mon |
SDSSJ2222 |
ALHj080034 - ALHj080036 |
Observed in clear skies with seeing around 0.7" |
Observed |
|
| 70-502 |
2024-10-11 |
00:19 |
Mon |
COOLJ0335-1927 |
ALHj110130 - ALHj110132 |
Clear skies and seeing around 1.0'' |
Observed |
|
| 70-502 |
2024-10-13 |
00:41 |
Mon |
SDSSJ0909, COOLJ0542-2125 |
ALHj130265 - ALHj130270 |
Targets observed through thin clouds and seeing around 1 arcsec, with coolj0542_56 getting some thick clouds at the end of the observation. |
Observed |
|
| 70-502 |
2024-10-26 |
00:00 |
Mon |
COOLJ0335-1927 |
ALHj260178 - ALHj260178 |
Target was attempted, but the seeing requirement could not be met |
Failed |
|
| 70-502 |
2024-10-27 |
00:00 |
Mon |
|
|
No observations could be taken due to bad weather. |
Failed |
|
| 70-502 |
2024-11-03 |
00:20 |
Mon |
COOLJ0335-1927 |
ALHk030124 - ALHk030126 |
Clear skies and seeing around 1.1''. Previously ctrl c'd because of cloud coverage. |
Observed |
|
| 70-502 |
2024-11-05 |
00:18 |
Mon |
COOLJ0542-2125 |
ALHk050263 - ALHk050265 |
Observed during a clear sky, but with poor seeing (~3''). |
Observed |
|
| 70-502 |
2024-11-07 |
00:00 |
Mon |
SDSSJ1326 |
- |
The target was missed due to thick clouds. |
Failed |
|
| 70-502 |
2024-11-09 |
00:19 |
Mon |
COOLJ0335-1927 |
ALHk090162 - ALHk090164 |
Observed with clear skies and seeing of around 1 arcsecond. |
Observed |
|
| 70-502 |
2024-11-10 |
00:39 |
Mon |
COOLJ0542-2125, SDSSJ0909 |
ALHk100228 - ALHk100233 |
Targets COOLJ0542-2125, SDSSJ0909 observed with clear, dusty skies and seeing of around 2 arcsec. Missed COOLJ1153 because of the seeing requirements of the OB. |
Observed |
|
| 70-502 |
2024-11-13 |
00:00 |
Mon |
|
|
Could not observe targets due to bad weather |
Failed |
|
| 70-502 |
2024-11-24 |
00:37 |
Mon |
SDSSJ2222, COOLJ0335-1927 |
ALHk240003 - ALHk240005; ALHk240023 - ALHk240025 |
Seeing was around 1.3" for the majority of the observations, but worsened up to
1.7" at the end of the second one. |
Observed |
|
| 70-502 |
2024-11-25 |
00:00 |
Mon |
- |
- |
The monitoring target was not observed due to a thick cloud coverage. |
Failed |
|
| 70-502 |
2024-11-27 |
00:00 |
Mon |
|
|
Target could not be observed due to thick clouds |
Failed |
|
| 70-502 |
2024-11-28 |
00:00 |
Mon |
|
|
Could not observe target due to high seeing and clouds |
Failed |
|
| 70-502 |
2024-12-02 |
00:18 |
Mon |
COOLJ0542-2125 |
ALHl020150 - ALHl020152 |
Target was observed through thin clouds, with seeing around 1.3". |
Observed |
|
| 70-502 |
2024-12-03 |
00:00 |
Mon |
|
|
No targets observed due to bad weather conditions at the time of the requested targets. |
Failed |
|
| 70-502 |
2024-12-06 |
00:46 |
Mon |
SDSSJ1326, COOLJ1153 |
ALHl060041 - ALHl060046 |
Targets were observed according to requirements. Started off with thin clouds and ended with clear skies, with seeing around 1.3" |
Observed |
|
| 70-502 |
2024-12-07 |
00:37 |
Mon |
COOLJ0542-2125, SDSSJ0909 |
ALHl070316 - ALHl070318;ALHl070326 - ALHl070328 |
Targets observed with clear skies and around 0.5-0.6" seeing. |
Observed |
|
| 70-502 |
2024-12-19 |
00:19 |
Mon |
SDSSJ2222 |
ALHl190113 - ALHl190115 |
Observed with clear skiesna nd seeing around 1.5'' |
Observed |
|
| 70-502 |
2024-12-20 |
00:19 |
Mon |
COOLJ0335-1927 |
ALHl200076 - ALHl200078 |
Clear skies and seeing around 1.0'' |
Observed |
|
| 70-502 |
2024-12-22 |
00:00 |
Mon |
none |
none |
Dome closed all night. Raining and snowing. |
Failed |
|
| 70-502 |
2024-12-28 |
00:46 |
Mon |
SDSSJ1326, COOLJ1153 |
ALHl280178-183 |
Dark sky OK seeing |
Observed |
|
| 70-502 |
2024-12-29 |
00:18 |
Mon |
COOLJ0335-1927 |
ALHl290147 - ALHl290149 |
Seeing worse than 1.3" |
Failed |
|
| 70-502 |
2025-01-01 |
00:00 |
Mon |
- |
- |
Due to thick clouds this was not observed |
Failed |
|
| 70-502 |
2025-01-08 |
00:31 |
Mon |
SDSSJ0909, SDSSJ1326 |
ALIa080185 - ALIa080187, ALIa080202 - ALIa080204 |
Great night with excellent conditions. Low wind, humidity and good seeing. All targets observed. |
Observed |
|
| 70-502 |
2025-01-09 |
00:33 |
Mon |
COOLJ1153 |
ALIa090184 - ALIa090186 |
Clear night with excellent conditions and good seeing. |
Observed |
|
| 70-502 |
2025-01-17 |
00:38 |
Mon |
SDSSJ2222, COOLJ0335-1927 |
ALIa170133 - ALIa170135, ALIa170162 - ALIa170164 |
Clear skies and seeing around 1.0''-1.3''. |
Observed |
|
| 70-502 |
2025-01-21 |
00:00 |
Mon |
|
|
No observation done because of 100 % humidity. |
Failed |
|
| 70-502 |
2025-01-22 |
00:00 |
Mon |
|
|
Nothing observed due to cloud cover, high humidity, rain, freezing conditions |
Failed |
|
| 70-502 |
2025-01-30 |
00:48 |
Mon |
COOLJ0335-1927, SDSSJ0909, SDSSJ1326 |
ALIa300069 - ALIa300071; ALIa300099 - ALIa300101; ALIa300142 - ALIa300144 |
Targets observed when possible, as there were high speed winds coming from the SE.
Otherwise observed in clear skies according to requirements. |
Observed |
|
| 70-502 |
2025-01-31 |
00:38 |
Mon |
COOLJ1153 |
ALIa310116 - ALIa310121 |
coolj0542_66 was missed due to high winds.
coolj1153_34 was observed with clear skies and seeing around 1.4-1.6''. However, the third exposure was interrupted due to high winds. To obtain the last exposure we reran the OB and read out immediatly the first two exposures. Thus the usable files are ALIa310116, ALIa310117 and ALIa310121.
Please let us know if we should set this as failed. |
Observed |
|
| 70-502 |
2025-02-08 |
00:11 |
Mon |
COOLJ1153, SDSSJ1326 |
ALIb080292 -ALIb080297 |
SDSSJ1326 was observed with thin clouds and seeing around 1.0''
COOLJ1153 failed due to thick clouds obscuring the target. Note that the first exposure looks okay (ALIb080292). |
Observed |
|
| 70-502 |
2025-02-14 |
00:18 |
Mon |
COOLJ0335-1927 |
ALIb140204 - ALIb140206 |
Varying seeing 1.2-1.4''. Thin cloud cover over the sky. Completed.
Possible satellite in one of the images. |
Observed |
|
| 70-502 |
2025-02-16 |
00:19 |
Mon |
COOLJ0542-2125 |
ALIb160064 - ALIb160066 |
Target observed in clear skies with seeing around 1.0".
Flats taken in the evening were not good, so please use the morning flats for the g' band. |
Observed |
|
| 70-502 |
2025-02-19 |
00:46 |
Mon |
SDSSJ1326, COOLJ1153 |
ALIb190352 - ALIb190357 |
Observed monitor targets shortly after power came back. Had to push coolj1153 slightly out of LST limits in order to observe. Hopefully it is acceptable. Conditions were good and seeing was below 1.3" |
Observed |
|
Should any of the observations have been carried out using the OB system, you will find additional information
HERE
