Getting Further from the Sun: How do you Ride an Epicycle?

  • John D. Clark
Part of the Patrick Moore's Practical Astronomy Series book series (PATRICKMOORE)

I got the distance to Venus from a quick-hit measurement. For the superior planets, I was not saved from arduous labor by quick wit. I had to collect a lot of data and crunch many numbers. For both Saturn and Mars I collected more data than I absolutely needed. One reason for this was that I simultaneously read around to see if I could find a useable analysis technique. I simply did not know how much data I was going to need.

The other reason was that astronomy is my hobby, and I was simply having a bit of fun watching the apparent movement of the planets. I did not need to care very much about whether my science was efficient, unlike in the day job.

First, I will take you through my photographic techniques. I am not afraid to experiment, knowing that some ideas will bomb out – but I do keep things simple and stupid. Then I will show you how to extract the coordinates of a planet from a photo. My simplified model of the planet's orbit is that it is circular, so I will take you through...


Stationary Point Circular Orbit Apparent Movement Star Field Clear Night 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.King’s Lynn, NorfolkUnited KingdomEngland

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