TO OPTICAL 3.50" SOLAR FILTER TYPE 2+ FULL APERTURE 3500

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Sale Price: $69.00

TO Optical 3.50" Solar Filter Type 2+ Full Aperture

Item No. 722-03500
Manuf. No. TO Optical 3500

Note: The size description is the INSIDE diameter of the solar filter. The OUTSIDE diameter of your scope must be smaller than this size for the filter to fit. If the size description is a range of sizes, the OUTSIDE diameter of your scope must be smaller than the largest size listed in the range.

• Filter's Inside Diameter: 90mm3.50"
• Clear Aperture: 80mm3.15"
• Recommended Use: TV Ranger

Type 2 Plus: Made with high quality hand select glass coated with our exclusive Solar II Plus. The most durable glass filter on the market. Transmission is 1/1,000th of 1% (Optical Density 5). Great for both visual and photographic use. Solar image is yellow-orange. Guaranteed fifteen years.

What detail is visible? Sunspots and surface granulation are the two main features. The only detail that cannot be seen with a standard filter (commonly called white light filter) are prominence and flares which require our highly specialized H-Alpha filter system.