Once and future celestial kings

Tomkin, Jocelyn
April 1998
Sky & Telescope;Apr98, Vol. 95 Issue 4, p59
Explains how to calculate a star's past or future brightness. Angular motion; Results from the Hipparcos satellite; Reliability of the calculations of the stars' light curves.


Related Articles

  • Why are some stars brighter than others? Eugene, Toni // National Geographic World;Feb95, Issue 234, p14 

    Answers a query regarding the difference of brightness in stars. Details of the same.

  • What magnitude is it? Aguirre, Edwin L.; Clark, Roger N. // Sky & Telescope;Jan97, Vol. 93 Issue 1, p118 

    Focuses on the difficulty of measuring brightness and color in astronomy. Accuracy of the measurement of an object's brightness per unit area in gauging visibility; Difficulty in detecting objects with surface brightness of 24 magnitudes per square arcsecond; Influence of human perception of...

  • Did That Star Change?  // Odyssey;Oct2003, Vol. 12 Issue 7, p42 

    Focuses on changes in the brightness of stars on the sky.

  • Astronomy books.  // Astronomy;Jan1994, Vol. 22 Issue 1, p108 

    Reviews the book `Astronomical Photometry,' by Christiaan Sterken and Jean Manfroid.

  • Getting a charge out of Canis Major.  // Sky & Telescope;Jul95, Vol. 90 Issue 1, p15 

    Reports on the results of an all-sky photometric survey by the orbiting Extreme Ultraviolet Explorer (EUVE). Analysis of the B-type star Adhara, or Epsilon Canis Majoris; Astronomers' difficulties with the study of masses close to the Sun; Temperature estimates of Adhara.

  • An evening of CCD photometry. Skillman, David; Sinnott, Roger W. // Sky & Telescope;May93, Vol. 85 Issue 5, p83 

    Describes a typical session of variable-star photometry done by the author at his observatory. What variable-star photometry is; Equipment; Homebuilt CCD camera; Detector cooling process; Why the temperature of the camera is controlled; Making calibration images; Tracking variable stars;...

  • Measuring a cluster's age with a CCD. Martin, Brian; di Cicco, Dennis // Sky & Telescope;May93, Vol. 85 Issue 5, p105 

    Explains how a CCD (charge-coupled device) photometer can be used to measure a star-cluster's age. Description of the CCD system; Telescope used for observations; Viewing the star cluster M37; Calculating the B-V color index; Description of the Hertzsprung-Russell (H-R) diagram; How B and V...

  • Twinkle, Twinkle, Little Quasar. Shilling, Govert // Sky & Telescope;May2002, Vol. 103 Issue 5, p18 

    Reports the cause of extreme rapid variations in radio brightness of a quasar west of the galaxy Vega. Culpability of interstellar scintillation; Argument on the intrinsic nature of rapid radio fluctuations in some quasars; Variation of visible and X-ray wavelengths in quasars.

  • Cross-talk in close-packed interferometer arrays. Subrahmanyan, Ravi // AIP Conference Proceedings;2002, Vol. 616 Issue 1, p102 

    Close-packed antenna configurations are important for high-surface-brightness observations of the CMB. The visibilities measured in baselines formed between close antenna elements—in particular, between shadowed elements—of interferometers are often observed to be corrupted. I show...

  • The devil's in the magnitudes: Part I. White II, James C. // Mercury;May/Jun98, Vol. 27 Issue 3, p8 

    Part I. Deals with the magnitude system used in determining the brightness of stars. Background information on the Pogson's scale; Sample activity in calculating energy influx differences.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics