ToO Information
Request ID: 49681
Request Type: NEW
ToO Urgency: NEXT BUSINESS DAY
Proposal ID:
Target Info
Target Name: 4U 1728-34
Target No.:
Category: X-RAY BINARIES
Coordinates[J2000]: (262.99054, -33.83403)
Exp (ks): 20
Extended: N
Extent Size:
Background Restriction: N
Remarks:
Constraint Details
Monitor: N
Criteria:
Phase Dependent: N
Epoch:
Period:
Min:
Max:
Remarks:
Specific Time: Y
Start: 2024-05-01 14:42 UTC
End: 2024-05-02 03:33 UTC
Remarks: We have just been informed that 4U 1728-34 will be observed for 20 ks starting from April 1, 2024, at 14:42:23 UTC, and ending on April 2, 2024, at 03:33:03 UTC. In order to compare the performances of the instruments and ideally catch the same type-I X-ray burst(s), the NICER observation should be performed within the same time window, preferably during periods of the least visible-light leakage.
ToO: Y
Coordinate Observation: Y
Observatory: EINSTEIN PROBE
Description: FXT onboard EP will observe 4U 1728-34 in the same requested time range. The observation plays a key role in the PV phase of the mission, as it allows us us to demonstrate how FXT can (i) detect millisecond coherent signals such as burst oscillations, (ii) extract spectra resolved over few seconds, (iii) deal with bright fluxes and more.
Uninterrupted: N
Justification:
Estimated Count Rate (cts s-1): 200.000
Requester Information
Name: DR. ALESSIO MARINO
Status
Request Date (UTC): 2024-03-28 15:26:28
Disposition: Rejected
Date: 2024-04-16 00:18:27.213390
Reason: Time conflict
Person:
Status: Unable to Execute
Date: 2024-04-16 00:18:27.213390
Person:
Misc
Note:
Target Details
Nearest Target No: 7054
Nearest Taget Name: 4U_1728-34
Separation (arcmin): 0.0000
Nearby Target (<3.0'): 2135[4U_1728-34],7054[4U_1728-34]
Referenced Target Catalogue: /Home/eud/nicerweb/too/ags/NICER2_Xray_Target_List_V38z.csv.gz
Sun Angle: 107.9 deg at 2024:092:21:58:09 (UTC), 121.4 deg after 2 weeks
Planned Observations
AGS6 Reference:
Planned Snapshots:
| Observation Start |
Observation End |
Span |
Mode |
Observation ID |
| (YYYY-DDDTHH:MM:SS) |
(YYYY-DDDTHH:MM:SS) |
(seconds) |
Man/Opt |
|
Visibility
AGS3 Reference:
Visibility Report:
| Target Name |
Target ID |
Visibility Start |
Visibility End |
Span |
Initial |
Final |
Relative |
|
|
(YYYY-DDDTHH:MM:SS) |
(YYYY-DDDTHH:MM:SS) |
(seconds) |
Interference |
Interference |
Orbits |