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    • Introduction
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    • Halo Artifacts
    • Collinder 399
    • Triangulum Galaxy M33
    • Galaxies - Camelopardalis
    • Galaxies - Canes Venatici
    • Open Cluster NGC 6611
    • NGC 2523 Barred Galaxy
    • Blaze Star T CrB
    • Variable 1 Persei
    • 7 & 8 Persei, NGC 869
    • S CrB Mira Variable
    • Rosette Nebula
    • Tracking Planets
    • Comet (Tsuchinshan-ATLAS)
    • Galaxy Index: And-Cet
    • Galaxy Index: Com-Ori
    • Galaxy Index: Peg-Vir
    • Galaxy References
    • Scientific American
    • Lunar Eclipse 14 Mar 2025
    • Contact Us
  • Home
  • Introduction
  • Smart Scope Reviews
  • Cold Weather Performance
  • Halo Artifacts
  • Collinder 399
  • Triangulum Galaxy M33
  • Galaxies - Camelopardalis
  • Galaxies - Canes Venatici
  • Open Cluster NGC 6611
  • NGC 2523 Barred Galaxy
  • Blaze Star T CrB
  • Variable 1 Persei
  • 7 & 8 Persei, NGC 869
  • S CrB Mira Variable
  • Rosette Nebula
  • Tracking Planets
  • Comet (Tsuchinshan-ATLAS)
  • Galaxy Index: And-Cet
  • Galaxy Index: Com-Ori
  • Galaxy Index: Peg-Vir
  • Galaxy References
  • Scientific American
  • Lunar Eclipse 14 Mar 2025
  • Contact Us

T Coronae Borealis

Discussion

It has been a year since Brad Schaefer's article on the recurrent nova T Coronae Borealis was published in Sky & Telescope (Ref 1). His prediction, based on past flare ups, was for an eruption in 2024. It has not occurred yet but it is highly anticipated in the near future. I have been monitoring the star with Origin since July 19, 2024, and as you can see by the reference stars, there has essentially been no change. Note that the comparison star 2 (HD 143455) is out of the field of view in the July image. The latest observations by AAVSO contributors puts the visual magnitude between 10.0 and 10.5 (March 23, 2025). My estimate based on comparison stars 4 and 5, agrees well.

Logbook

  • Date & Time: December 14, 2024, 6:30 am
  • Location: Kempt Shore, Nova Scotia, Canada, 45°N
  • Conditions: Partly cloudy, calm, -6°C
  • Technical: 10-sec exposures, 10-min integration, battery power, no filter, no post-processing

References

  1. "Get Ready for a Nova's Bright Return," Brad Schaefer, Sky & Telescope Volume 147(3), March 2024, pp. 34-40.
  2. "Is T CrB rising?" Astronomy Volume 48(7), July 2020, p. 62.
  3. Observing Variable Stars, David H. Levy, Cambridge University Press, Cambridge, UK, 1989, pp. 68-69.
  4. "Stellar opposites: R and T Coronae Borealis," Sky & Telescope Volume 72(2), August 1986, p. 161.
  5. Burnham's Celestial Handbook: Volume Two, Robert Burnham, Jr., Dover Publications, Inc., New York, 1978, pp. 708-714.

Logbook

  • Date & Time: July 19, 2024
  • Location: Kempt Shore, Nova Scotia, Canada, 45°N
  • Technical: 10-sec exposures, 10-min integration, no filter, no post-processing

Online Comparison Star Links

Detailed information from the Simbad Database
1. T Coronae Borealis2. HD 143455, V 7.793 - HD 143707, V 7.894 - HD 143256, V 9.80
5 - TYC 2037-1228-1, V 11.36 - PGC 56558 (Spiral Galaxy), V 15.58

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