Jul 20, 2023

Transparently work in waveband, wavelength, or filter

Class to transparently deal with the conversion between filters, wavelength, frequency and other methods of specifying a location in the electro-magentic spectrum.

AstroWaveBand tries to determine the natural form of the numbers such that a request for a summary of the object when it contains 2.2 microns would return the filter name but would return the wavelength if it was not a standard filter. In ambiguous cases an instrument name is required to decide what to return. In really ambiguous cases the user can specify the unit in which to display the numbers on stringification.

Used mainly as a way of storing a single number in a database table but using logic to determine the number that an observer is most likely to understand.

Numerical comparison operators can be used to compare two AstroWaveBand objects. When checking equality, the “natural” and “instrument” methods are used, so if two AstroWaveBand objects return the same value from those methods, they are considered to be equal. When checking other comparisons such as greater than, the wavelength is used.

Checkout these related ports:
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  • Xtide - Harmonic tide clock and tide predictor
  • Xplanet - Draw pictures of the earth textured by an image
  • Xphoon - Set the root window to the moon in its current phase
  • Xmoontool - Version of John Walker's classical moontool for X11/Motif
  • Xephem - Interactive astronomical ephemeris program
  • Xeartk - Small demo for tkgeomap
  • Xearth - Set the root window to the image of earth
  • Wmsun - Dockapp that displays the rise and set times of the Sun
  • Wmspaceweather - DockApp that shows the weather at geosynchronous orbit
  • Wmsolar - Dockapp that displays the Solar System viewed from the top
  • Wmmoonclock - Displays the phase of the moon, plus orbital data
  • Wmjupiter - Dockapp that displays information on Jupiter
  • Wmglobe - Neat xearth-like WindowMaker dockapp
  • Weather - Utility to provide current weather conditions and forecasts