Chapter 1 - Spherical Astronomy
This chapter shows how you can use Mathcad to carry out a variety of calculations in spherical astronomy. The topics covered are the standard ones of this subject: coordinate transformations, coordinate reductions (corrections for proper motion, precession, nutation, aberration, parallax, the Earth's figure and refraction) and time. The principles of astrometry as applied to astronomical photography and more modern imaging techniques are also covered. Each topic contains a fully worked numerical example with intermediate results shown. By changing the input parameters (star position, your location, a new time or date, etc.), you can solve your own spherical astronomy problem.
Topics
- Introduction to Spherical Astronomy
- Equatorial to Horizon Transformation (Can only be opened with Mathsoft's Mathbrowser)
- Horizon to Equatorial Transformation
- Equatorial to Ecliptic Transformation
- Ecliptic to Equatorial Transformation
- Equatorial to Galactic Transformation
- Galactic to Equatorial Transformation
- Angular Separation
- Observed to True Altitude Conversion
- True to Observed Altitude Conversion
- Precession
- Nutation, Obliquity of the Ecliptic
- Apparent Place of an Object
- Topocentric Place of an Object
- B1950.0 to J2000.0 Conversion
- J2000.0 to B1950.0 Conversion
- Measures of Time
- Universal to Sidereal Time Conversion
- Sidereal to Universal Time Conversion
- UT - ET (TDT)
- Calendar to Julian Date Conversion
- Julian to Calendar Date Conversion
- Heliocentric Correction
- Astrometry (Can only be opened with Mathsoft's Mathbrowser)
Return to Home Page