P73-503: High-cadence Lens Monitoring of the unique ZigZag lens for Cosmography

PI: Stefan Schuldt

This is a Monitoring program to do 37 min ALFOSC R-band imaging as often as possible.

Scheduled dates P74:

Oct: 1,2,3,6,7,8,9,10,11,14,15,16,17,18,19,20,21,22,26,30          (20 nights)
Nov: 2,4,6,8,14,15,16,17,18,19,22,23,26,29                         (14 nights)
Dec: 1,5,6,14,15,17,18,19,20,21,22,23,24,25,26,27,29,31            (18 nights)
Jan: 1,2,3,5,6,8,9,13,14,15,16,17,18,19,22,23,25,26,27,28,29,30,31 (23 nights)
Feb: 1,2,4,5,6,7,8,9,10,11,12,13,14,15,16,20,21,25,27,28           (20 nights)
Mar: 1,2,3,6,7,9,13,16,19,21,24,25,26,29,31                        (15 nights)

For the observer:

In order to schedule the target in Visplot, cut and paste the following line:

ZigZag 17 21 44.25 +88 42 21.56 2000 2200 73-503 LST[0.0-24.0] Monitor ALFOSC:IMA:SPECIAL:alfosc_rband

Go to the directory

cd ~/scripts/73-503

and execute the script:

SPECIAL_SCRIPT_zigzag

Please, update the Monitoring tracking log of this program. Finding chart: Simbad identifier [LAM2018] J1721+8842

P73 Monitoring

Program Tracking
Proposal	73-503
Semester	P74: 20261001 - 20270401
Principal Investigator	Stefan Schuldt
Programme	High-cadence Lens Monitoring of the unique ZigZag lens for Cosmography
Instrument	ALFOSC
Time Allocation	37 min on 110 nights
Total Nights	68h
Type	Monitoring
Notes	Fixed dates to be scheduled
Total Time Spent	00:35 (hh:mm)

Proposal	Date	Time	Type	Targets	Files	Comments	Status
73-503	2026-10-01	00:35	Monitoring	ZigZag	ALJj010100 - ALJj010105	Target observed successfully with clear skies and good seeing.	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

Last modified: October 01 2026