Thousand Oaks Off-Axis 2+ Glass Solar Filters

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. Type 3 Plus: Lighter density, 1/100th of 1% (Optical Density 4) for maintaining fast shutter speeds when using "slow" fine grain films. For photographic use only. (Visual focusing through the camera viewfinder is safe) Solar image is yellow-orange. Guaranteed fifteen years. Filters in table below are Type 2+ glass unless noted otherwise. If you require Type 3+, simply add the letter P in front of the part number corresponding to your telescope size.