Nova M31N 2008-12a - 14.11.2021 at 18.46 - 14.11.2021 at 20.45 Orimattila, Artjärvi, Viestikallio Observation number 102342

Visibility I / V

Jorma Ryske, Etelä-Suomen kosmol. seura

The recurring nova M31N 2008-12a, which erupts in the M31 galaxy about every year, once again brightened into a detectable 18.5mag target this morning on November 14, 2021.

Picture 1) Stacked picture of 30x90s exposures on November 14, 2021 at 19:00 between the light of the moon and even thin clouds.

Figure 2) Animation of the situation on November 8, 2021 and November 14, 2021

Photometric measurements:

#NAME DATE MAG MERR FILT

M31N2008-12a 2459533.20185 18.531 0.0714 L

M31N2008-12a 2459533.21329 18.534 0.0769 L

M31N2008-12a 2459533.23041 18.419 0.0741 L

M31N2008-12a 2459533.24182 18.528 0.0690 L

M31N2008-12a 2459533.25325 18.435 0.0667 L

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Additional information

Observation target
- Nova
Designation
- M31N 2008-12a
Constellation
- Andromeda
Brightness in magnitudes
- 18.5
Field of view
36 arc minutes

Weather
- -3C, Kuu 81%, joitakin ohuita yläpilviä
Limiting magnitude
- 20

Technical information

TS 305 / 1200mm Newton, TS KomakorrF4, QSI690 / ICX814, filter Baader Clear, mount CEM60. FoV 36 'x 28'. North up, east left.

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Nova M31N 2008-12a - 14.11.2021 at 18.46 - 14.11.2021 at 20.45 Orimattila, Artjärvi, Viestikallio Observation number 102342