Baader Astro Solar Full Aperture Telescope Sun Filters

Specifications:

• These solar filters fit all telescope with an optical tube diameter of 40mm
• Baader telescope solar filter is safe for direct viewing through the telescope and for photography
• These sun filters are relatively distinctive with their appealing styles
• Made with high quality, this telescope filter can be used for a long time  
• This telescope solar filter delivers superb views of the sun, without risk to your eyes
• The best sun filters are ideal for photographing the sun too
• The sun filter also includes instructions for use and care
• Density: 5.0
• Objective Lens Diameter: 40.0mm/15.7in
• Compatible with:  Celestron 80EQ

Details:

• The sun filters will fit any telescope with an optical tube diameter of 40mm 

• These telescope solar filters will give you a comfortable touch through their unique designs

• The telescopes sun filter with 5.0density  can deliver superb views of the sun, without risk to your eyes

• Getting these sun filters will help you to do activities more conveniently

• The telescope solar filter also includes instructions for use and care

How to Use a Telescope Filter?

Once you've mastered telescopic object magnification, it's time to increase the brightness and detail of what you're viewing. Use a telescope filter to increase contrast anytime or reduce glare during daytime viewing. Examine the polar ice caps of Mars or try to count the infamous rings of Saturn. Colored telescope filters alter the image you see by refracting all other colors in the visible light spectrum. They're effective and easy to use

Instructions:

• Decide which specific result you wish to achieve, such as enhancing detail on the Earth's moon or increasing the contrast of Venus when viewed during the day
• Determine the numerical visible light transmission (VLT) you require to achieve your viewing result

Select and Use Telescope Filters

• Choose a light-green or moon filter of 53 percent VLT for enhanced moon views. You can also use this filter for viewing frost, fog or ice on Mars or encircling Saturn or Jupiter
• Choose a yellow filter of 74 percent VLT to brighten desert areas on Mars or darken the blue belt at Jupiter's equator
• Choose a light-red filter of 25 percent VLT for daytime viewing of Mercury and Venus against our blue sky
• Choose a light-blue filter of 73 percent in order to bring out detail of clouds on Mars and Jupiter. It also fine-tunes the details of galaxies and the binary star Antares
• Insert the proper color filter in front of the telescope eyepiece. Use the thumbscrew to loosen or tighten the eyepiece, slide out the filter and replace, taking care to follow your specific manufacturer's directions

Types of Solar Filters for Telescopes:

Telescopes were traditionally used to view the stars and constellations at night. However, with the availability of solar filter holders, it is also possible to observe the Sun with a telescope without causing severe eye damage. There are different types of solar filters made from suitable materials that block harmful ultraviolet rays from penetrating the telescope lens, enabling the observer to look directly at the Sun, for example during a solar eclipse

White Light Filters

White light filters are made from two types of material: glass and mylar. Mylar is a light and inexpensive plastic film. The average Mylar filter produces a blue tint, but upgraded filters produce a more natural image. Glass filters are flat, polished and coated with nickel and chromium. It is more expensive, but also more durable and gives a better resolution.

Hydrogen-Alpha Filters

Hydrogen-alpha filters are arranged in two filter sets, the energy rejection filter and the tuning filter. The energy rejection filter restricts all light apart from one narrow band of red light, while the tuning filter makes further adjustments to the red spectrum. Hydrogen-alpha filters are also called solar prominence and are mainly used to observe the edges of solar disks.

Other Filters

Some filters are designed with a reflective metallic coating, such as aluminized polyester filters. The metal coat provides extra eye protection and limits exposure to unfiltered light through any holes in the polyester. Other filters are designed using a black polymer, which produces an orange-yellow tint compared to the blue tint observed with aluminized polyester filters. All solar filters are mounted over the top of the telescope in a metal cell.

Safety

There are a few safety precautions to take when using solar filters. The filter must be inserted securely in the metal cell at the front of the telescope before viewing. It must also be the right size to fit the telescope tube to prevent any unfiltered light from penetrating. It is also not advised to use filters made from materials such as smoked glass, compact discs or polyester coated with metals untested for solar viewing

 Package Included:

• 1 x Sun Filter