[Other] Unpainted version of VMS

[Jorge_Stolfi]

  
No idea of what "AM" means, but it is some shade of yellow.  Which is "amarillo" in Spanish, but...

Oops, "AM" must be "amber", meaning  between yellow and orange.  It was one of the standard colors of early LEDs, and is the official color or the "yellow" traffic lights.

I suppose the images with "MB" prefix use light of "Medium Bandwitdh", while the "WB" ones
use light with "Wide Band" spectrum.  The "TX" prefix apparently means transmitted light.

It should be fun to explore the latter.  

One weird thing I already noticed on TX870IR_045_F and TX625RD_042_F for page You are not allowed to view links. Register or Login to view. (Aries Light) is that some stars that are filled with the light yellow paint are more transparent to those bands (red and infrared) than the blank vellum!  For instance, the star in the outer band at 08:30.

The only explanation I can think of is that the binder used in that yellow paint, which must be transparent at those wavelengths, fills the cavities and pores of the vellum so that it scatters less and hence transmits more.  Like paper becomes translucent when stained with oil or wax.

All the best, --jorge