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P73-803: NOT observations of spider pulsars: Looking for Super-Massive NSs

PI: Manuel Linares

This program is a combination of fixed Service and Monitoring with ALFOSC. The 17 hours in Monitoring mode is logged below, while the Service program of 2 nights plus 15 hours will be reported in its own EON reports.

Instrument setup:

  • ugriz filters (FASU)
  • ALFOSC grisms: #5, #19
  • ALFOSC slits: Slit_1.0"

Fixed Service Schedule

These observations will have their own EON report and are not included in the Mon tracking below. 
Date           UT-window                Comment
                              
12.08.2026      all night                  Run A
13.08.2026      all night                  Run A
09.09.2026     21:30-02:30                 Run E
10.09.2026     21:00-02:00                 Run C
11.09.2026     22:00-03:00                 Run C

Monitoring Schedule

These observations should be logged in the Mon tracking below. 
Date                       UT-window     Duration              Comment

03-07-2026,  73-803,       23:30-04:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
04-07-2026,  73-803,       00:00-04:00,   01:00,      ALFOSC,  B:4FGLJ2056.4+3142,2x30minBlocks
05-07-2026,  73-803,       23:30-04:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
07-07-2026,  73-803,       00:00-04:00,   01:00,      ALFOSC,  B:4FGLJ2056.4+3142,2x30minBlock
15-07-2026,  73-803,       23:30-04:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
16-07-2026,  73-803,       00:00-04:00,   01:00,      ALFOSC,  B:4FGLJ2056.4+3142,2x30minBlocks
19-07-2026,  73-803,       23:30-04:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
23-07-2026,  73-803,       00:00-04:00,   01:30,      ALFOSC,  B:4FGLJ2056.4+3142,3x30minBlocks

04-08-2026,  73-803,       23:00-02:30,   01:00,      ALFOSC,  B:4FGLJ2056.4+3142,2x30minBlocks
05-08-2026,  73-803,       22:00-03:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
08-08-2026,  73-803,       23:00-02:30,   01:00,      ALFOSC,  B:4FGLJ2056.4+3142,2x30minBlocks
09-08-2026,  73-803,       22:00-03:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
10-08-2026,  73-803,       23:00-02:30,   01:00,      ALFOSC,  B:4FGLJ2056.4+3142,2x30minBlocks
11-08-2026,  73-803,       22:00-03:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
14-08-2026,  73-803,       22:00-03:30,   01:00,      ALFOSC,  D:4FGLJ2054.2+690,2x30minBlocks
15-08-2026,  73-803,       23:00-02:30,   01:30,      ALFOSC,  B:4FGLJ2056.4+3142,3x30minBlocks

The OB generator will be used to request all observations.

For the observer:

Go to the directory
  cd ~/scripts/73-803
List the available scripts
  ls -lrt
and execute the OB generated scripts for the appropriate date as requested.

In the case of Monitoring OBs, please, update the Monitoring tracking log of this program.

Program Tracking
Proposal 73-803
Semester P73: 20260401 - 20261001
Principal Investigator Manuel Linares
Programme NOT observations of spider pulsars: Looking for Super-Massive NSs
Instrument ALFOSC
Time Allocation 2 N fixed service mode; 9 hours monitoring mode; Service 5h 10/9 and 5h 11/9; 8 hours of Monitoring.; Preliminarily scheduled as 5 hours on Sep 9th 21:30-02:30.
Total Nights 32h+2N
Type Monitoring/Service
Notes Fixed dates to be scheduled. Fixed scheduled service
Total Time Spent 02:34 (hh:mm)
Proposal Date Time Type Targets Files Comments Status
73-803 2026-07-03 00:51 Monitoring 4FGL_J2054+690 ALJg030173 - ALJg030177, ALJg030189 - ALJg030192, ALJg030193 - ALJg030196, ALJg030197 - ALJg030200 Observed successfully, with clear skies and seeing varying between 0.7"-0.9". Observed
73-803 2026-07-04 00:53 Monitoring 4FGL_J2056+3142 ALJg040240 - ALJg040243, ALJg040244 - ALJg040247, ALJg040248 - ALJg040251, ALJg040252 - ALJg040258 Target observed successfully, with clear skies and seeing between 0.7"-0.8". Observed
73-803 2026-07-05 00:50 Monitoring 4FGL_J2054+690 ALJg050139 - ALJg050142, ALJg050143 - ALJg050146, ALJg050147 - ALJg050150, ALJg050151 - ALJg050155 Target observed successfully, with clear skies and seeing of 1.0". 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: July 03 2026