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Contact information

Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

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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