I guess my attempt at sarcasm wasn't very good...What some cheese with that wine?
would the darkest Voyager methane filter work okay for you?
I don't understand why it isn't obvious to more people that you can not take
a white light image of the Sun from space, with a regular camera and solar filter.
There is not one image of such, anywhere. The filters will work in space but none have
been used. I can not and will not believe it is because nobody is interested in doing so.
Light from the sun is traveling as a planewave, produced by the countless number of
point sources of 'illumination' from the photospheric shell of ionisation.
Our eyes, or a regular camera whose optics are designed to mimic the human eye, can not
detect these waves. The optics require a very precisely ground curve towards the
outer edge, and some carefully calculated gratings etched onto those special profile
lenses. The nature of these optics IS classified, and that is why they are ground
in-house, by the NRL.
That's really impressive, don't you think? I can not locate the image in a NASA catalog though.This image of the Sun, Earth and Venus was taken by the Voyager 1 Spacecraft on February 14, 1990, when it was approximately 32 degrees above the plane of the ecliptic and at a slant-range distance of around 4 billion miles. This is the very first time, and may be the only time, that we will ever see our solar system from such a vantage point.
A methane filter for the Sun? What is methane doing on the Sun?Its the one they used to take pictures of the sun.
Anyway, it is interesting that methane lines were detected from a brown dwarf,
but that to me is evidence they are seeing a planet, not a star.
Yes, typical, make up another class of star to explain the unexpected.In 1995 the study of brown dwarfs changed dramatically with the discovery of three incontrovertible substellar objects, some of which were identified by the presence of the 670.8 nm lithium line. The most notable of these objects was Gliese 229B, which was found to have a temperature and luminosity well below the stellar range. Remarkably, its near-infrared spectrum clearly exhibited a methane absorption band at 2 micrometres, a feature that had previously only been observed in gas giant atmospheres and the atmosphere of Saturn's moon, Titan. Methane absorption is not expected at the temperatures of main-sequence stars. This discovery helped to establish yet another spectral class even cooler than L dwarfs known as "T dwarfs" for which Gl 229B is the prototype.