With AstroSolar™ the Sun appears in neutral white. Other films and some glass filters produce a blurry bluish or reddish Solar image, thereby cutting part of the spectrum. Especially with an orange sun, it is very hard to see faculae regions which are visible predominantly in the blue wing of the spectrum.
Due to it's neutral color balance, AstroSolar enables the use of various color (or interference) filters which
allows the observer to concentrate on certain spectral passbands for
investigations of different layers within the solar "atmosphere".
AstroSolar™ is essentially free
from pinholes, since - other than with even the most expensive glass
filters - it is coated on both sides, so that the chance of two pinholes
overlapping each other is extremely faint. Pinholes do appear, but to 1
out of 10000 only in optical density 2.5! Baader AstroSolar™ safety
film has been approved for eye safety by the National Bureau of
Standards in Germany, the PTB. Unlike any other Solar Filter on the
market, AstroSolar™ is CE-tested according to EG-Norm 89/686 and EN
169/92 ( notified body 0196). All processes connected to this product
have been thoroughly tested. Coatings are inspected constantly for
consistency to ensure your eye safety!
Baader AstroSolar™ film
Filter cell constructed from lightweight 18Ga. aluminum and powder
coated white. Heavy duty threaded inserts and nylon thumbscrews insure a