- R32 minutes (32 frames)
- G29 minutes (29 frames)
- B29 minutes (29 frames)
Nova Cassiopeiae (V1405 Cas) is a classic nova whose outburst was recorded in the constellation Cassiopeia. Such events are the result of explosive processes on the surface of a white dwarf that is part of a close binary star system.
In such systems, a high-density white dwarf gravitationally attracts hydrogen from a less dense companion. Accretion occurs during their short orbital period, usually less than 12 hours. Hydrogen accumulating on the surface of the white dwarf is compressed by gravity and heats up. When the temperature and pressure reach critical values, a thermonuclear reaction is triggered, resulting in a powerful explosion.
This reaction is accompanied by a sudden and significant increase in the luminosity of the star, which can last from several days to several months. After the outburst, the star loses the accumulated hydrogen, and the white dwarf returns to the accretion phase. A similar cycle can be repeated many times with an interval of tens to thousands of years.
Outbursts of classical novae such as V1405 Cas provide a unique opportunity to study thermonuclear combustion processes under extreme conditions, as well as the dynamics of stellar evolution in binary systems. Observations of such objects are important for understanding the chemical enrichment of the interstellar medium, since the ejection of matter forms elements that subsequently participate in the formation of new stars and planetary systems.
| Photo | Date | Frames | Exposure | R | G | B |
|---|---|---|---|---|---|---|
 | 26 Mar 2021 | 25 | 00:25 | 00:07 | 00:09 | 00:09 |
Visibility chart of New Cassiopeia (V1405 Cas) during the day
| Date | Moon Phase | Exposure | CCD Temperature | Gain | Offset | Filter |
|---|---|---|---|---|---|---|
- 2023ixf•
- 40 Eri•
- Abell 74•
- Artemis A868 SA•
- a Canis Minoris•
- C 2020 R4 ATLAS•
- C 2020 T2 Palomar•
- C 2021 S3 (PANSTARRS)•
- Haumea (2003 EL61)•
- HCG 68•
- HCG 92•
- IC 1318B•
- IC 1396•
- IC 1795•
- IC 1805•
- IC 1848•
- IC 1871•
- IC 3322A•
- IC 342•
- IC 4015•
- IC 405•
- IC 417•
- IC 434•
- IC 443•
- IC 4703•
- IC 5070•
- IC 5146•
- IC 63•
- M 1•
- M 101•
- M 103•
- M 109•
- M 13•
- M 15•
- M 27•
- M 3•
- M 33•
- M 42•
- M 45•
- M 5•
- M 51•
- M 57•
- M 63•
- M 64•
- M 74•
- M 76•
- M 81•
- M 82•
- M 86•
- M 87•
- M 94•
- M 97•
- NGC 147•
- NGC 1491•
- NGC 1499•
- NGC 1579•
- NGC 1961•
- NGC 2146•
- NGC 2239•
- NGC 2403•
- NGC 281•
- NGC 4236•
- NGC 4565•
- NGC 4631•
- NGC 507•
- NGC 508•
- NGC 5866•
- NGC 5907•
- NGC 6503•
- NGC 6823•
- NGC 6888•
- NGC 6946•
- NGC 6992•
- NGC 6995•
- NGC 7000•
- NGC 7023•
- NGC 7129•
- NGC 7217•
- NGC 7331•
- NGC 7380•
- NGC 7538•
- NGC 7635•
- NGC 7640•
- NGC 7822•
- NGC 891•
- NGC 896•
- NGC 925•
- PGC 54559•
- Sh2-155•
- Sh2-168•
- Sh2 103•
- Sh2 109•
- Sh2 132•
- T CrB•
- UGC 6930•
- V1405 Cas•
- Vesta A807 FA•