Please note: Sizes shown are the outside diameter of the telescope including dew shield (if fitted).
Premium quality full-aperture solar filters
Baader AstroSolar™ film
- Made using Baader AstroSolar™ Material for solar observation and photography.
- Filter cell constructed from lightweight 18Ga. aluminium and powder coated white.
- Heavy duty threaded inserts and nylon thumbscrews.
- Full-aperture filters, except the 395-405 mm model which provides an off-axis partial aperture.
With AstroSolar™ the Sun appears in its real colour - neutral white. Other films and most glass filters produce a cool/blue or warm/orange colour 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 its neutral colour balance, AstroSolar enables the use of various colour (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 it is coated on both sides, 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!
NOTE: Not suitable for use with open-tube telescopes, like 'truss' Dobsonians.
IMPORTANT Never view the Sun without a suitable Solar Filter! Check the solar filter fits securely and covers the full telescope aperture before every use. Solar observing is dangerous and can be hazardous to eyesight. Safety is everyone’s responsibility, please read the safety notes supplied with the product carefully.