1 / 9

The Celestial Sphere

The Celestial Sphere. Six Ingredients to Locating Objects on the "Celestial Sphere" . Right Ascension (RA) ~ longitude Declination (DEC) ~ latitude Zero point of RA = Vernal Equinox Zero point of DEC = Celestial Equator Rotation angle of sphere given by Sidereal Time (ST)

mieko
Télécharger la présentation

The Celestial Sphere

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Celestial Sphere

  2. Six Ingredients to Locating Objects on the "Celestial Sphere" • Right Ascension (RA) ~ longitude • Declination (DEC) ~ latitude • Zero point of RA = Vernal Equinox • Zero point of DEC = Celestial Equator • Rotation angle of sphere given by Sidereal Time (ST) • Poles of sphere are inclined according to your latitude

  3. Latitude & Longitude on Earth's Surface

  4. Celestial Sphere

  5. Coordinates on the Celestial Sphere ZP ZP

  6. Sidereal Time (ST) measures the current angular distance of the Vernal Eqx from your meridian

  7. Hour Angle (HA) measures the current angular distance of a source from your meridian measured along the equator.

  8. By knowing HA and DEC, you can locate any object in the sky at a given time.

  9. Visibility of objects depends on DEC and your latitude on Earth

More Related