Telescopes & Astronomy

Combined with the aperture of 300mm and focal length of 1500mm, this scope is great for prime-focus photography. Higher quality images can be achieved with the optional coma corrector.

For eight years, Celestron’s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. Since that time, many more astro-imagers and planetarium controlled setups have emerged as backyard telescope technology has evolved. Celestron’s engineering team applied their years of experience designing German Equatorial mounts to the all-new CGX EQ, a culmination of all the advancements made to our technologies, value, and ease-of-use.

• Enhance your 8” Rowe-Ackermann Schmidt Astrograph (RASA) by blocking light pollution, improving image contrast, and darkening the sky background.
• This filter selectively blocks wavelengths of light from sources of light pollution, such as streetlights, not broad regions of the spectrum.
• Does not block wavelengths associated with emission nebulae, keeping your nebula images bright and detailed.
• Fits into the 8” RASA’s integrated filter mount, maintaining peak optical performance.
• Optically flat surfaces free of defects, constructed of Schott glass with anti-reflection coatings.

Bring out the best in your nebulae astroimages with the H-alpha H-beta OIII (Hα-Hβ-OIII) Imaging Filter for the 8” RASA. This specialized filter allows high transmission of light from emission nebulae while blocking light pollution, helping to make your images pop with detail off the black sky background with superior contrast.

Fortunately, many sources of light pollution have relatively discreet emission spectra; they emit primarily at specific wavelengths of light. By strategically blocking these “bad” wavelengths, the filter essentially eliminates the effect of light pollution while letting the “good” wavelengths of light associated with the emission nebula pass through to the camera. You’ll notice much higher contrast in your images immediately, even if imaging from your light polluted backyard! And since the transmission at the key wavelengths is so high, the nebula will not be dimmed—only the background will be blacker.

A comprehensive and authoritative account tracing the development of the telescope from its earliest origins to the modern era. History of the Telescope by Henry C. King is an essential reference for astronomers, historians of science, and anyone fascinated by how this revolutionary instrument transformed our understanding of the universe.

Show off your love for the second planet from the Sun with this stunning Venus Planet Acrylic Pin. Lightweight and durable, this vibrant pin makes a perfect accessory for jackets, bags, or lanyards—and an ideal gift for astronomy enthusiasts, space lovers, and stargazers of all ages.

Show off your love for the cosmos with this Saturn Planet Acrylic Pin, a stylish and lightweight accessory perfect for jackets, bags, and lanyards. Featuring a vibrant, eye-catching design of the ringed planet, it makes an ideal gift for astronomy enthusiasts, space lovers, and stargazers of all ages.