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P72-507

P72-507: Superorbital variability of the Be stellar disk in LSI +61303

P.I.: Petri Vaisanen

This is a Monitoring program using FIES and ALFOSC.

Instrument setup

  • FIES : Low-res fiber F1

  • ALFOSC : FAPOL, lambda/2, UBVRi

Afternoon instructions

  • Run afternoon calibrations: fies-calibs -fib 1

Observing instructions

  • On the Queue page, make sure the OB-generated observing script is written to disk, or else 'compile'

  • Go to directory: cd ~/obs/scripts/72-507/ and do ls -lrt

  • Start the requested OB generated script

Program Tracking
Proposal 72-507
Semester P72: 20251001 - 20260401
Principal Investigator Petri Vaisanen
Programme Superorbital variability of the Be stellar disk in LS I +61 303
Instrument FIES+ALFOSC
Time Allocation 3.3 hours FIES and 7.5 hours ALFOSC
Total Nights 10.8h
Type Monitoring
Notes Fixed dates to be scheduled
Total Time Spent 05:01 (hh:mm)
Proposal Date Time Type Targets Files Comments Status
72-507 2025-12-08 00:15 Monitoring LSI+61303 FIIl080101 - FIIl080103 Observed at 1.2 arcsec dimm seeing. Observed
72-507 2025-12-10 00:16 Monitoring LSI+61303 FIIl100101 - FIIl100103 Observed at 1 arcsec dimm seeing. Observed
72-507 2025-12-13 00:00 Monitoring none none No opening. Bad weather. Failed
72-507 2025-12-16 00:41 Monitoring BDp59389, LSI+61303, G191B2B ALIl160113 - ALIl160132, ALIl160140 - ALIl160179, FIIl160095 - FIIl160097 Targets observed with clear skies and seeing between 1.5 - 1.8". The peak counts for BDp59389 in the different filters were, U: 2000, B: 12000, V: 40000, R: 60000, i': 450000. Observed
72-507 2025-12-20 00:38 Monitoring BDp59389, LSI+61303, G191B2B ALIl200123 - ALIl200142 , ALIl200164 - ALIl200183 , FIIl200065 - FIIl200067 , ALIl200208 - ALIl200227 Stopped first FIES observation because of CCD timeout during exposure (time not counted). Rest of the targets observed without issue. Observed
72-507 2025-12-27 00:39 Monitoring BDp59389, LSI+61303, G191B2B ALIl270129 - ALIl270148, FIIl270098 - FIIl270100, ALIl270165 - ALIl270184, ALIl270185 - ALIl270204 Clear skies, and the seeing was oscillating between 1.0" and 1.3". Observed
72-507 2025-12-30 00:00 Monitoring None None Sky conditions did not comply with the OB requirements. Failed
72-507 2026-01-07 00:00 Monitoring - - Missed due to weather. Failed
72-507 2026-01-27 00:40 Monitoring LSI+61303, BDp59389, G191B2B ALJa270090 - ALJa270149, FIJa270063 - FIJa270065 All targets observed with approx. 1.2 arcsec. seeing and through thin clouds. Observed
72-507 2026-02-01 00:40 Monitoring LSI+61303, BDp59389, G191B2B ALJb010095 - ALJb010154, FIJb010071 - FIJb010073 All targets observed upwind in very windy conditions (around 15 m/s which is the threshold for upwind observations), through thin clouds and approx. 1.3 arcsec. seeing. Observed
72-507 2026-02-03 00:00 Monitoring - - Failed. Thick clouds made target acquisition and guiding impossible. Failed
72-507 2026-02-05 00:33 Monitoring BDp59389, LSI+61303 ALJb050063 - ALJb050082, FIJb050120 - FIJb050122, ALJb050086 - ALJb050105 Observed with clear skies and seeing around 2.0". Missed zero_pol_standard due to weather. Observed
72-507 2026-02-09 00:39 Monitoring BDp59389, LSI+61303, G191B2B ALJb090094 - ALJb090113, FIJb090101 - FIJb090103, ALJb090114 - ALJb090133, ALJb090150 - ALJb090169 Clear skies, and the seeing was around 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: September 04 2025