Proposal #459

Observation Use: AB Aur (Alert Notice 842: AB Aur monitoring requested for HST observations )

Right ascension : 04 55 45.84
Declination : +30 33 04.3

Mag range : 6.9 - 8.4 V

a few observations per night

Filter Requested: Rc is preferred, then B and V.

V Magnitude Range: 6.9 - 8.4 V

A minimum S/N > or = 100 is requested.

Because the comp and check stars for this campaign are 3 and 5 magnitudes fainter than AB Aur, I am requesting, to take multiple exposures in each filter and stack the exposures to attain a comp star S/N of 100 or more while not overexposing AB Aur.

Comparison Stars:
I am requesting to use GSC 02387-00489 (the 104 in the AAVSO AB Aur sequence, Rc=10.071) as their single comp star and
GSC 2387-0935 (the 120 in the sequence, RC=11.483) as their check star. Single comp star photometry is strongly preferred for this campaign.

Start Date : 2023 November
End date : 2024 February