Instructions from the PI
Dear NOT observer and staff.
This is a set of instructions for NOT monitoring programme P60-025
(PI: Håkon Dahle), scheduled for service observations.
The purpose is to monitor a rare gravitationally lensed quasar with
three images separated by up to 14''.
The purpose of the observations is to make a gravitational lensing time delay measurement
between the three images and determine the level of microlensing in the system.
The target information and the observing strategy are reported below.
Please let us know whether you carried out these observations.
Thank you!
Best regards,
Håkon Dahle
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For the "monitoring" observations use
the script indicated by the OB.
The coordinates of the target are:
RA (J2000) = 09:09:45.3
DEC(J2000) = +44:49:53.9
We ask for the following observations with ALFOSC, 20 min:
Calibrations:
For calibration we request:
- A set of three twilight flats for the SDSS g' filter
- alfosc-calibs
Available scripts
Go to the directory
cd ~/scripts/60-025
For these observations use the appropriate script for the date, complie the
OB if needed.
Observations
Date | Time (UT) | Duration | Comments |
03-10 | 04:30-(SAT+15m) | 00:20 | epoch1 |
09-10 | 04:00-(SAT+15m) | 00:20 | epoch2 |
29-10 | 02:45-(SAT+15m) | 00:20 | epoch3, 0909_gband_22 |
01-11 | 03:30-(SAT+15m) | 00:20 | epoch4, 0909_gband_23 |
22-11 | 03:00-(SAT+15m) | 00:20 | epoch5, 0909_gband_24 |
01-12 | 02:30-(SAT+15m) | 00:20 | epoch6, 0909_gband_25 |
23-12 | 01:00-(SAT+15m) | 00:20 | epoch7, 0909_gband_26 |
03-01 | 03:00-06:30 | 00:20 | epoch8 , 0909_gband_27 |
15-01 | 22:30-23:45 | 00:20 | epoch9 , 0909_gband_28 |
23-01 | 23:00-05:15 | 00:20 | epoch10, 0909_gband_29 |
29-01 | 23:00-04:50 | 00:20 | epoch11, 0909_gband_30 |
04-02 | 04:25-05:30 | 00:20 | epoch12, 0909_gband_31 |
13-02 | 21:30-23:45 | 00:20 | epoch13, 0909_gband_32 |
18-02 | 21:20-03:30 | 00:20 | epoch14, 0909_gband_33 |
25-02 | 20:45-03:00 | 00:20 | epoch15, 0909_gband_34 |
01-03 | 01:20-03:40 | 00:20 | epoch16, 0909_gband_35 |
12-03 | (EAT-15m)-22:40 | 00:20 | epoch17, 0909_gband_36 |
19-03 | (EAT-15m)-01:30 | 00:20 | epoch18, 0909_gband_37 |
28-03 | 23:15-01:00 | 00:20 | epoch19, 0909_gband_38 |
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