Principal Investigator Email Address
wangzx@physics.mcgill.ca
Estimated Total Execution Time (hours, including overheads)
01:00:00
General Description
This 1 hour DDT observation will image the anomalous X-ray pulsar (AXP) 1E 1048.1-5937. The AXP is intrinsically faint; the previous detection yielded I=26.2. The AXP underwent a glitch (sudden increase in the spin frequency) which was accompagnied with an increase in its X-ray flux. Subsequent NIR observations showed that it had brightened in K-band by about 2 magnitudes. We want to test if the AXP also brightened at optical wavelengths. Because the glitch was discovered on April 3, these observations should be executed as soon as possible. Note that we have limited our individual exposure times to 180s to avoid saturating the detector on the high sky backgrounds in the I-band. Furthermore, the telescope is pointed such that the target is centered on the FORS2 master chip.
Waiver Requests
No Waiver Request was submitted
Critical Observing Condition Constraints
N/A
Time-Critical Aspects
This OB should be executed as soon as possible.
Special Execution Requirements
N/A
Special Calibration Information
N/A
ToO Information
N/A
ToO Activators List
N/A
Is this a Pre-imaging run ?
false
Pre-imaging Requirements
N/A
Source(s) of Pre-imaging
Pre-imaging sources not listed above
Do all your OBs comply with the instrument-specific requirements listed on the instrument-specific Phase 2 web page ?
If this is a pre-imaging run, did you select PRE-IMAGING for the Observing Category for each Observing Template ?
N/A
Do all your finding charts comply with both the general and instrument-specific Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude and spectral type of all standard stars in the OBs ?
N/A
Have you included OBs for any calibrations that you need but which are not part of the Calibration Plan ?
N/A
If you are observing Moving Targets, have you attached suitable ephemeris files to your OBs?
N/A
If you have preferences which OBs should be executed first, did you make use of the User Priority field in the OBs ?
N/A
If this is a run that requires coordinated observations with other facilities, did you give proper instructions in the Time-Critical Aspects Section ?
N/A
If you have prepared your finding charts with tools other than FIMS, do they comply with the specifications on the FORS1 Phase 2 web page ?