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Frequently Asked Questions

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Q1: Will this fit a Meade ETX-90 telescope?

A: No, the AstroZap Solar Filter for Meade ETX-80 telescopes will not fit an ETX-90 scope. Instead, you'll need the fiter made for the ETX-90. Here's the URL; just paste it into your browser's address window: http://telescopes.com/products/astrozap-baader-solar-filter-for-meade-etx90-34653.html.

Q2: Is this a glass filter for a Meade 12 SCT. Karl

A: Baader solar filters were once made of optical glass, but are no longer. How they're made of a high-strength, polymer film that's ion-implanted and metallized. Each side of the film is coated to guard against pinholes. The polymer filters are considered better than the coated glass filters of just a few years ago.

Q3: hello, can I use this filter with a newtonian telescope of 9.5" in the primary mirror?. The las question, is it 12" the diameter of the aluminum ring or of the filter?. Thank you.

A: You might measure the outside diameter of your telescope and let us know. We'll then check to see if we have a solar filter that will work for you.

Q4: Hello, i have a Meade LX 200 12" telescope and need a solar filter. The outside diameter is ~345 mm. Thanks

A: The AstroZap Baader Solar Filter for 12-Inch SCT's, which you've already found, should do the job nicely.

Q5: Can I put this item on my Celestron FirstScope 114 EQ Short Newtonian Reflector? Thanks.

A: Yes, the AstroZap Solar Filter for 114mm will fit your Celestron FirstScope 114 EQ Short Newtonian Reflector.

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AstroZap Baader Solar Telescope Filters

Item# ASZP010

List price: $52.00 to $150.00

Sale Price: $28.00 to $83.00

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Baader AstroSolar™ film Filter cell constructed from lightweight 18Ga. aluminum and powder coated white. Heavy duty threaded inserts and nylon thumbscrews insure a secure fit.

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".

Eye safety

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!