British Astronomical Association

Supporting amateur astronomers since 1890

EF Peg – tricky photometry

› Forums › Variable Stars › EF Peg – tricky photometry

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • 29 August 2025 at 11:58 am #631156
    Mr Ian David Sharp
    Participant

    Hi all,

    Having seen a VSS alert about EF Peg in outburst (this is the first outburst detected of this UGSU star since January 2022), I was intrigued to observe it, especially in light of the fact that there is another star only 5 arc-seconds away.

    I managed to arrange the star annulus to cover EF Peg and the Gap annulus to contain the near-by star with a clear background annulus. See attached screen shot. Also attached are the 6 measurements which averaged at Vmag = 11.80 (2025-08-28 21:21:43 UTC)

    Cheers
    Ian.

    Attachments:

    1. EF-Peg-Photometry.png

    2. 20250828_EF-Peg_V_PixelSkies-C11_IDS_plot_lines.png

    29 August 2025 at 3:16 pm #631163
    Gary Poyner
    Participant

    Hi Ian,

    Yep, it’s very tricky to measure. It’s easier visually. Unscrew your camera…;-)

    Gary

  • Author
    Posts
Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.