Optional Accessories

Celestron offers a full line of optional accessories for your Firstscope telescope. Please consult the Celestron Accessory Catalog (#93685) for a complete description.

Eyepieces - An assortment of 1¼" eyepieces are available to give you a wide range of magnifications.

•OMNI Plössl - Plössl eyepieces have a 4-element lens designed for low-to- high power observing. The Plössls offer razor sharp views across the entire field, even at the edges! In the 1-1/4" barrel diameter, they are available in the following focal lengths: 4mm, 6mm, 9mm, 15mm, 20mm, 25mm, 32mm and 40mm.

•Ultima - Ultima is not really a design, but a trade name for our 5-element, wide field eyepieces. In the 1-1/4" barrel diameter, they are available in the following focal lengths: 5mm, 7.5mm, 12.5mm, 18mm, 24mm, 30mm, 35mm, and 42mm. These eyepieces are all parfocal. The 35mm Ultima gives the widest possible field of view with a 1-1/4" diagonal.

Eyepiece filters - To enhance your visual observations, individual filters and sets are available for 1¼" eyepieces.

Flashlights - Celestron’s #93592 and #93588 LED (light emitting diode) flashlights conveniently allow you to read star maps without diminishing your night vision. Both feature adjustable brightness and are small and lightweight, (#93592 is only 6 inches long, and weighs in at a mere 3 ounces).

Light Pollution Reduction (LPR) Filter (#94126A) - A 1¼" filter that threads into a 1¼" eyepiece, designed to enhance your views of deep-sky astronomical objects when observed from urban areas. The LPR filter selectively reduces the transmission of certain wavelengths of light, specifically those produced by artificial lights. This includes mercury, and high and low pressure sodium vapor lights. Additionally, it blocks unwanted natural light (also known as sky glow).

Sky Maps (#93722) - When learning the night sky, Celestron Sky Maps offer just the guidance you need. The maps show all the constellations and brighter deep-sky objects and are printed on heavy, moisture- resistant paper for durability. The front cover features a rotating planisphere, indicating when specific constellations are visible.

Solar Filters - Celestron’s AstroSolar® solar filters permit completely safe, direct observation of the sun. This filter, which transmits .00001% of visible light, allows sunspots to be seen as they move across the solar disk. While reducing the intensity of the sun's visible light, it also blocks 99.999% of invisible infrared light. The solar filter is made of precision engineered polyester film. A layer of aluminum is vacuum-deposited on the surface of the sheet used to make each filter. This aluminum coating produces a cool, comfortable, pale blue image of the sun. A #21 orange eyepiece filter works well in conjunction with the filter to produce a more naturally colored image of the sun.

Peterson First Guides® - Astronomy

A simplified field guide to the stars, the planets and the universe featuring full color maps showing the positions of the stars throughout the year. This useful guide also includes beautiful constellation paintings, photographs, and clear, concise descriptions of stars, the planets, the sun, the moon, comets, black holes, galaxies and more.

Planisphere (#93720) - A colorful rotating star map that indicates when specific constellations are visible, with removable markers for tracking the movement of planets. Available in three different latitudes: 30°, 40°, and 50°  all ±10°.

A full description of all Celestron accessories can be found in the Celestron Accessory Catalog (#93685).

21052, Refractor, 70 AZ, 60 AZ, 21071 specifications

The Celestron 21052 and 21071 are standout models in the brand's renowned refractor telescope range, ideal for both novice astronomers and seasoned stargazers. The 70 AZ and 60 AZ options provide exceptional portability while still delivering impressive optical performance.

The Celestron 21052, featuring a 70mm aperture, is designed to capture bright and clear images of celestial objects. Its refractor design utilizes high-quality glass optics that reduce chromatic aberration, ensuring that colors are rendered accurately and clearly. With a focal length of 700mm, it offers a suitable balance of magnification and field of view, making it perfect for observing planets, star clusters, and even some of the brighter deep-sky objects.

The portable design of the 70 AZ model makes it easy to transport to various viewing locations. It comes with a sturdy, adjustable tripod that provides excellent stability during observations. Additionally, a smooth altazimuth mount allows for easyTracking of celestial objects as they move across the night sky. The telescope also includes a finder scope, which aids in locating objects quickly, enhancing the overall viewing experience.

The Celestron 21071, featuring a slightly smaller 60mm aperture, is a fantastic choice for beginners looking to get into astronomy without a hefty investment. Despite its compact size, the 60 AZ still offers great optical quality, making it possible to view the Moon's craters, Jupiter’s moons, and more with remarkable clarity. The 60 AZ is designed for quick setup and portability, making it ideal for impromptu stargazing sessions.

Both models come with a variety of accessories that enhance usability, including multiple eyepieces for different magnification levels and a star map to help users locate celestial objects. The telescopes are also compatible with a smartphone adapter, allowing users to capture images of their observations and share them with friends or social media.

Ultimately, the Celestron 21052 and 21071 refractor telescopes exemplify quality design and ease of use, making them excellent choices for anyone interested in exploring the night sky. With their user-friendly features and excellent optics, these telescopes provide a window to the wonders of the universe, encouraging a lifelong passion for astronomy.