Saturday, January 11, 2014

A telescope software for the legendary HP-12c

Here is a port of my telescope, eyepiece and CCD software for the legendary "HP-12C Platinum" calculator. You may find it useful for astrophotographic and visual work since it computes some important properties of your telescope system for a given eyepiece and camera combination.

Image: The HP-12C calculator next to an astronomical eyepiece
You type:
  • Telescope aperture
  • Focal length
  • Eyepiece focal length
  • Eyepiece field of view
  • Pixel size of the CCD camera
  • Light frequency
You get calculated:
  • Surface of this aperture
  • Focal ratio
  • Magnification
  • Exit pupil
  • Field of view of the telescope (FOV)
  • Maximum resolution of the telescope
  • CCD resolution
  • Light power of the telescope