Designing A Solar System...
The initial stage of this fun project is to design a set of plywood cutouts depicting each of Ol' Sol's eight planets.
Since the bunk bed has very limited amounts of open surfaces, I will need to size the objects very carefully in order to make everything fit.
The Gas Giants...
These, of course, are the largest four planets: Jupiter, Saturn, Neptune, and Uranus.
I arbitrarily decided to make my version of Jupiter with a seven-inch disc. The other three planets will be drawn to the same scale, with the relative sizes gleaned from a table of planetary statistics.
Since I wish to depict the planets as accurately as possible, I need to take into account the proper shapes of the discs.
Both Jupiter and Saturn rotate very rapidly on their axis, causing their gaseous atmospheres to create an equatorial bulge and flattening at the poles. In other words, the discs of both planets appear to be slightly oval.
How do I depict this properly?
If you have read earlier posts in this blog you will find that I was involved in the hobby of astronomy back in the mid 1980s.
A major aspect of that activity involved observing the two planets and carefully rendering drawings of what was seen through the eyepiece.
I was a member of both the Association of Lunar and Planetary Observers (U.S.), and the British Astronomical Society. Both organizations relied on the observations of dedicated amateur astronomers to provide data throughout the planets' yearly apparitions. This consisted of accurate drawings of visible details and central meridian transit timings of prominent details.
A.L.P.O provided standard templates for drawing in such details.
I still have some of these.
The template for Jupiter clearly shows the oval shape of the disc.
Templates for Saturn were provided showing the various inclinations of the planet's rings throughout it's long orbital period. Templates were provided in two-degree increments from 0 degrees (rings viewed edge-on) to 28 degrees full inclination.
For my cutout of Saturn, I chose to go with the 22 degree template. It shows enough of the ring structure while still making visible the planetary disc behind the near portion of the ring.
Now it was just a matter of making enlarged copies of the templates on the printer to match the same size as my proposed cutouts.
Easy-Peasy!
Here is a pic of the pattern of Saturn applied to a sheet of 1/4" Baltic birch plywood.
More solar system building to come in the next post....