Proposal #657

Proposer	(47259) Jiashuo Zhang (yizhizhangxiu@gmail.com) obscode: ZZHA
Assigned To	(3663) Dirk Terrell
Date Submitted	Oct. 18, 2025
Status	Accepted
Priority	Normal
Proposal	Hello everyone, I am Jiashuo Zhang. My observer code is ZZHA. M31N 2008-12a is a recurrent nova in M31, erupting approximately once every year. The eruption this year is predicted to occur between November 2025 and January 2026. I hope to start taking two V-band images of M31N 2008-12a daily from now on. This will help us confirm its eruption or constrain the timing of its outburst. Additionally, the telescope's field of view should be slightly larger. I would like the imaging results to be downloadable as FITS files for further analysis. The derived photometric data (as well as upper limit measurements) will be uploaded to the AAVSO for reference by international colleagues. This imaging campaign is expected to last for three months. To achieve reliable upper limits on brightness, the data should ideally reach a limiting magnitude of 19 or fainter. Cheers, Jiashuo Zhang

Targets
Target	RA (H.HH)	Dec (D.DD)	Magnitude	Telescope	Observation Frequency	Expiration Date	Proprietary Term
M31N 2008-12a	11.370040	41.90275	23.0–17.5	—	—	—	6 Months

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