u/Heliosopher

This colorimeter is something I kicked around some years ago, but I suspected color wasn't all that important at the time. Today astronomers can acquire spectrums of exoplanets as they orbit and...rotate. The rotation can produce slight color changes for various reasons.

It's fairly simple. With a known spectrum (SED) of an object, say exoplanet, this spectrum can be reproduced by using a given calibrated mask that will reduce accurately the color level for each appropriate wavelength of visible light. The adjusted spectrum must be homogenized through a scrambled fiber array, which will emit the same color as what was seen by astronomers.

Any errors in the result can be found by using the spectrometer to confirm the matching spectrums.

What do you think? :)

Here is a current status showing by stellar types:

So, for the G-Type (e.g. Sun) there are 2892 total exoplanets; 1162 of these are <= 2.5Rearth; 112 total are in the HZ (Optimistic +); 7 of these are both <= 2.5Rearth and in their HZ.

Notice that 35% of all exos have been found in G-Type star systems.