All Products

93425 X-Cel LX 18mm Eyepiece by Celestron

Celestron X-Cel LX series eyepieces offer a 60° apparent field of view, perfect for the Moon, the planets, and a plethora of deep-sky objects. The premium six-element optical set is finished with multiple layers of high-transmission coatings for clear, sharp images. The edges of the optics are blackened for increased contrast. All seven X-Cel LX eyepieces sport 16 mm of comfortable eye relief, and are parfocal, which means you can switch out eyepieces within the series during observing sessions and little or no additional focusing will be required.

The X-Cel LX eyepiece body is made of black-anodized aluminum. The pop-up eyecups make it easy to adjust the height for different users. Turn them in one direction to extend the length, and the other direction to provide a flat surface, preferable to most eyeglass wearers. A treaded rubber grip around the center of the eyepiece barrel offers secure handling, even in moist conditions or with heavy gloves on. The 1.25" insert barrel is threaded to accept filters.

• X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system.
• Pop-up rubber eyeguards provide comfort and increase contrast. Raise and lower with a simple twist.
• A treaded rubber grip offers a no-slip grip, even with gloves on.
• 1.25" barrels are threaded to accept filters.
• The Celestron X-Cel LX Series includes the following focal lengths in a 1.25" format: 2.3 mm, 5 mm, 7 mm, 9 mm, 12 mm, 25 mm

93426 X-Cel LX 25mm Eyepiece by Celestron

Celestron X-Cel LX series eyepieces offer a 60° apparent field of view, perfect for the Moon, the planets, and a plethora of deep-sky objects. The premium six-element optical set is finished with multiple layers of high-transmission coatings for clear, sharp images. The edges of the optics are blackened for increased contrast. All seven X-Cel LX eyepieces sport 16 mm of comfortable eye relief, and are parfocal, which means you can switch out eyepieces within the series during observing sessions and little or no additional focusing will be required.

The X-Cel LX eyepiece body is made of black-anodized aluminum. The pop-up eyecups make it easy to adjust the height for different users. Turn them in one direction to extend the length, and the other direction to provide a flat surface, preferable to most eyeglass wearers. A treaded rubber grip around the center of the eyepiece barrel offers secure handling, even in moist conditions or with heavy gloves on. The 1.25" insert barrel is threaded to accept filters.

• X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system.
• Pop-up rubber eyeguards provide comfort and increase contrast. Raise and lower with a simple twist.
• A treaded rubber grip offers a no-slip grip, even with gloves on.
• 1.25" barrels are threaded to accept filters.
• The Celestron X-Cel LX Series includes the following focal lengths in a 1.25" format: 2.3 mm, 5 mm, 7 mm, 9 mm, 12 mm, 18 mm

93428 X-Cel LX 1.25" 3x Barlow Lens by Celestron

When inserted between the eyepiece and telescope, this premium 3x Barlow lens triples the magnification of all your 1.25" eyepieces. This is a perfect accessory for owners of short, fast telescopes, and is especially helpful for boosting the magnification during lunar or planetary observations under good seeing conditions. The apochromatic, fully multi-coated optics offer great color correction and contrast.

The black anodized housing with orange highlights matches the eyepieces in the Celestron X-Cel LX line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves. A brass compression ring just inside the top of the X-Cel Barlow grabs your eyepiece gently but firmly when you turn the thumbscrew. Once the thumbscrew has been secured in place, the brass ring keeps your eyepiece in the Barlow instead of relying on the tip of the thumbscrew itself, offering a better and protecting the barrel from scratches.

The barrel of the Celestron X-Cel LX 3X Barlow is threaded to accept 1.25" filters, allowing you to change eyepieces without requiring you to remove and re-attach the filter from each eyepiece barrel.

• Quality X-Cel LX 3x Barlow triples the magnification of any 1.25" eyepiece, perfect for owners of fast, short focal length telescopes.
• 3-element apochromatic, fully multi-coated optics offer up bright, sharp images with excellent color correction.
• A rubber grip helps to avoid accidental drops.
• Barrel is threaded to accept standard 1.25" filters.
• A brass compression ring holds eyepiece firmly in place.

93430 Luminos 7mm Eyepiece by Celestron

The Luminos series eyepieces offer a wide 82° field of view in both high power and low power models, allowing you to make the most of your telescope, whether you own a short, fast refractor or a Celestron EdgeHD telescope. The optical set consists of six or seven elements (depending on the model) and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal, which means you can switch out eyepieces during observing sessions with little or no additional focusing required.

The Luminos eyepiece body is made of polished and anodized aluminum. A rubber grip runs around the equator of the eyepiece, giving you a secure grip and an easy method for raising and lowering the retractable eyecup. Simply twist the rubber grip to adjust the height of the eyecup. The insert barrel is threaded to accept filters.

• Enjoy wide 82° views with Celestron Luminos Eyepieces.
• Retractable eyecup pops up when you need it, drops down when you don't.
• Sturdy anodized aluminum barrels are threaded for filters.
• A rubber grip keeps the eyepiece securely in your hands, even when it's cold or you have gloves on.
• Other eyepieces in the Celestron Luminos Series include: 10mm - 1.25", 15mm - 1.5", 19mm - 2", 23mm - 2", 31mm - 2"

93431 Luminos 10mm Eyepiece by Celestron

The Luminos series eyepieces offer a wide 82° field of view in both high power and low power models, allowing you to make the most of your telescope, whether you own a short, fast refractor or a Celestron EdgeHD telescope. The optical set consists of six or seven elements (depending on the model) and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal, which means you can switch out eyepieces during observing sessions with little or no additional focusing required.

The Luminos eyepiece body is made of polished and anodized aluminum. A rubber grip runs around the equator of the eyepiece, giving you a secure grip and an easy method for raising and lowering the retractable eyecup. Simply twist the rubber grip to adjust the height of the eyecup. The insert barrel is threaded to accept filters.

• Enjoy wide 82° views with Celestron Luminos Eyepieces.
• Retractable eyecup pops up when you need it, drops down when you don't.
• Sturdy anodized aluminum barrels are threaded for filters.
• A rubber grip keeps the eyepiece securely in your hands, even when it's cold or you have gloves on.
• Other eyepieces in the Celestron Luminos Series include: 7mm - 1.25", 15mm - 1.25", 19mm - 2", 23mm - 2", 31mm - 2"

93432 Luminos 15mm Eyepiece by Celestron

The Luminos series eyepieces offer a wide 82° field of view in both high power and low power models, allowing you to make the most of your telescope, whether you own a short, fast refractor or a Celestron EdgeHD telescope. The optical set consists of six or seven elements (depending on the model) and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal, which means you can switch out eyepieces during observing sessions with little or no additional focusing required.

The Luminos eyepiece body is made of polished and anodized aluminum. A rubber grip runs around the equator of the eyepiece, giving you a secure grip and an easy method for raising and lowering the retractable eyecup. Simply twist the rubber grip to adjust the height of the eyecup. The insert barrel is threaded to accept filters.

• Enjoy wide 82° views with Celestron Luminos Eyepieces.
• Retractable eyecup pops up when you need it, drops down when you don't.
• Sturdy anodized aluminum barrels are threaded for filters.
• A rubber grip keeps the eyepiece securely in your hands, even when it's cold or you have gloves on.
• Other eyepieces in the Celestron Luminos Series include: 7mm - 1.25", 10mm - 1.25", 19mm - 2", 23mm - 2", 31mm - 2"

93433 Luminos 19mm Eyepiece by Celestron

The Luminos series eyepieces offer a wide 82° field of view in both high power and low power models, allowing you to make the most of your telescope, whether you own a short, fast refractor or a Celestron EdgeHD telescope. The optical set consists of six or seven elements (depending on the model) and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal, which means you can switch out eyepieces during observing sessions with little or no additional focusing required.

The Luminos eyepiece body is made of polished and anodized aluminum. A rubber grip runs around the equator of the eyepiece, giving you a secure grip and an easy method for raising and lowering the retractable eyecup. Simply twist the rubber grip to adjust the height of the eyecup. The insert barrel is threaded to accept filters.

• Enjoy wide 82° views with Celestron Luminos Eyepieces.
• Retractable eyecup pops up when you need it, drops down when you don't.
• Sturdy anodized aluminum barrels are threaded for filters.
• A rubber grip keeps the eyepiece securely in your hands, even when it's cold or you have gloves on.
• Other eyepieces in the Celestron Luminos Series include: 7mm - 1.25", 10mm - 1.25", 15mm - 1.25", 23mm - 2", 31mm - 2"

93434 Luminos 23mm Eyepiece by Celestron

The Luminos series eyepieces offer a wide 82° field of view in both high power and low power models, allowing you to make the most of your telescope, whether you own a short, fast refractor or a Celestron EdgeHD telescope. The optical set consists of six or seven elements (depending on the model) and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal, which means you can switch out eyepieces during observing sessions with little or no additional focusing required.

The Luminos eyepiece body is made of polished and anodized aluminum. A rubber grip runs around the equator of the eyepiece, giving you a secure grip and an easy method for raising and lowering the retractable eyecup. Simply twist the rubber grip to adjust the height of the eyecup. The insert barrel is threaded to accept filters.

• Enjoy wide 82° views with Celestron Luminos Eyepieces.
• Retractable eyecup pops up when you need it, drops down when you don't.
• Sturdy anodized aluminum barrels are threaded for filters.
• A rubber grip keeps the eyepiece securely in your hands, even when it's cold or you have gloves on.
• Other eyepieces in the Celestron Luminos Series include: 7mm - 1.25", 10mm - 1.25", 15mm - 1.25", 29mm - 2", 31mm - 2"

93435 Luminos 31mm Eyepiece by Celestron

The Luminos series eyepieces offer a wide 82° field of view in both high power and low power models, allowing you to make the most of your telescope, whether you own a short, fast refractor or a Celestron EdgeHD telescope. The optical set consists of six or seven elements (depending on the model) and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal, which means you can switch out eyepieces during observing sessions with little or no additional focusing required.

The Luminos eyepiece body is made of polished and anodized aluminum. A rubber grip runs around the equator of the eyepiece, giving you a secure grip and an easy method for raising and lowering the retractable eyecup. Simply twist the rubber grip to adjust the height of the eyecup. The insert barrel is threaded to accept filters.

• Enjoy wide 82° views with Celestron Luminos Eyepieces.
• Retractable eyecup pops up when you need it, drops down when you don't.
• Sturdy anodized aluminum barrels are threaded for filters.
• A rubber grip keeps the eyepiece securely in your hands, even when it's cold or you have gloves on.
• Other eyepieces in the Celestron Luminos Series include: 7mm - 1.25", 10mm - 1.25", 15mm - 1.25", 19mm - 2", 23mm - 2"

93436 Luminos 2" 2.5x Barlow Lens by Celestron

The Celestron 2" Luminos Barlow Lens increases the magnification of your 2" and 1.25" eyepieces by 2.5x. The premium 4-element apochromatic optics are fully multi-coated for optimum light transmission and yield high contrast, true color images.

The beautiful hard-anodized aluminum housing matches the eyepieces in the Celestron Luminos line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves. A brass compression ring just inside the top of the Luminos 2.5x Barlow grabs your 2" eyepieces gently but firmly when you turn the oversized thumbscrew. Once the thumbscrew has been secured in place, the brass ring keeps your eyepiece in the Barlow instead of relying on the tip of the thumbscrew itself, offering a better grip and protecting the barrel from scratches. A matching 2" to 1.25" adapter is included so that you can increase the magnification of all of your eyepieces, both 1.25" and 2", in this versatile Barlow lens.

The insert barrel of the Celestron Luminos 2.5x Barlow is threaded to accept 2" filters. This is a nice feature, because you can change eyepieces without removing and reattaching the filter each time.

• The Celestron 2.5x Luminos Barlow increases the magnification of any 2" or 1.25" eyepiece by two and a half times.
• High-quality 4-element optics produce a flat field for sharp images that are free of extraneous color.
• Hard-anodized aluminum barrel is threaded to accept 2" filters.
• A brass compression ring holds eyepieces firmly in place, and large thumbscrews are easy to turn, even with gloves on.
• A 2" to 1.25" adapter is included. Allows the use of both 2" and 1.25" eyepieces.

93453 Ultima Edge - 24mm Flat Field Eyepiece - 1.25" by Celestron

See the whole picture with Ultima Edge. These flat-field eyepieces were designed to provide an ultra-sharp, ultra-clear, crisp image from the center all the way to the edge of the field of view. The 24mm Ultima Edge eyepiece features fully multi-coated optics and an 8- element lens design, maximizing light transmission.

The Ultima Edge 24mm has a generous 65° field of view perfect for viewing planets, stars and the Moon's surface. This eyepiece provides good mid-power magnification, perfect for viewing the Moon's surface and most deep sky objects.

Body

The 24mm Ultima Edge eyepiece's main housing is machined from high grade aluminum with a black anodized outer surface.

Its 1.25" mounting barrel is internally threaded to accept standard 1.25" filters and adapters. It is compatible with 1.25" star diagonals and focusers. On the exterior of the eyepiece, you will find a uniquely designed, molded rubber grip ring for non-slip handling during observing sessions.

Viewing through the 24mm Ultima Edge eyepiece is comfortable for both eyeglass wearers and non-eyeglass wearers alike, thanks to the rubber eyecups and long eye relief of 29mm.

• 24mm Ultra Flat Field eyepiece designed for 1.25" focusers
• Incredibly crisp views from center to edge of field
• Fully multi-coated, 8-element lens design for excellent light transmission
• Wide 65° apparent field of view allows you to see more of the night sky
• Generous 29mm eye relief and fold-down rubber eyeguard for comfortable viewing with or without eyeglasses
• Molded rubber grip ring for non-slip handling

93480 Tripod for StarSense Explorer Tabletop Dobsonian Telescopes by Celestron

Enjoy a more comfortable viewing experience with your StarSense Explorer Tabletop Dobsonian telescope with this adjustable-height tripod. Adding this solid, sturdy tripod allows you to set up your Tabletop Dobsonian at the perfect viewing height for everyone in your group and avoid lower obstructions.

Durable Construction

The Tripod for StarSense Explorer Tabletop Dobsonians securely locks your Dobsonian base and telescope to the tripod using three captured screws on the underside of the mounting plate. The integrated accessory tray functions as a center support to make the entire structure stiff and rigid. It can also hold up to five additional 1.25" eyepieces. The all-metal tripod is constructed from high-quality materials that can withstand years of use in tough outdoor conditions.

Viewing Comfort

Achieve the perfect viewing position with ease. The tripod comes with three adjustable, stainless steel 1.5" diameter legs. Whether you prefer to observe standing up or sitting down, you can find the most comfortable position for an immersive stargazing experience. The raised tripod helps to combat viewing obstructions like fences and low-profile trees.

Designed with portability in mind, this tripod is lightweight and foldable, so it's easy to transport and set up at your favorite observing locale. Spend less time assembling and more time exploring the wonders of the night sky. When you're done observing, the legs fold inward and stow neatly under the mounting plate.

• Solid, sturdy tripod exclusively for the StarSense Explorer Tabletop Dobsonian
• Securely lock your Dobsonian base and telescope to the tripod with three captured screws
• Customize the telescope's height with adjustable tripod legs.
• Built-in accessory tray holds your eyepieces and other essentials when not in use
• Tripod legs collapse for easy transport

93481 Tabletop Tripod by Celestron

Eliminate the need for your full-height tripod and enjoy grab-and-go convenience when you add the Tabletop Tripod to your NexStar Evolution, NexStar SE, or Celestron Origin telescope. This compact and sturdy accessory is half the size and weight of a standard tripod, making it perfect for travel. The low-profile legs and wide footprint offer added stability, while the convenient tabletop design makes it easier for some observers (especially children) to access the eyepiece.

Setup is quick and easy compared to a full-height tripod. Simply place the Tabletop Tripod on a camp table, bench, tailgate, or any other flat surface. With a footprint of just 17.5" x 16", you can use it just about anywhere. Then, open and level the tripod legs, attach the mount and telescope, and you're ready to go.

The Tabletop Tripod has adjustable knobs on each leg and a bubble leveler on the mount plate to ensure your setup is level before adding the telescope. Just like the NexStar SE, NexStar Evolution, and Celestron Origin's standard tripod, the Tabletop Tripod has three captured screws on the underside of the mount plate so you can securely lock your mount and telescope in place.

When not in use, the Tabletop Tripod's legs fold inward and stow neatly under the mount plate for easy storage and transport.

• Miniature tripod perfect for using your telescope on an elevated surface such as a picnic table
• Provides a solid, sturdy base for your NexStar Evolution, NexStar SE, and Celestron Origin fork arm mount with telescope tube
• Features adjustment knobs and a bubble level to ensure the telescope is perfectly level even if the tabletop is not
• Three captured screws securely lock your mount and telescope to the tripod
• Tripod legs fold in for convenient transport

93503 VSP (Vibration Suppression Pads) by Celestron

Wind, an unsteady tripod, or even an accidental bump can disturb your image quality. Keep your telescope still while observing with these sturdy pads. Simply place your tripod legs on top of the pads to absorb shock and stabilize your telescope.

Celestron's set of three Vibration Suppression Pads are manufactured using Sorbothane® (available only in the USA) recognized worldwide as the ultimate material for attenuating shock, isolating vibration and damping noise. No synthetic rubber or polymer can dissipate energy as effectively. BEWARE OF CHEAPER KNOCK-OFFS USING LESS CAPABLE MATERIALS! Imitations use silicon which is low-cost, does not work well, and may melt in the sun. Similar materials used in China look and feel the same, but do not perform half as well as products using Sorbothane®.

• 3 vibration suppression pads go under your tripod legs to stabilize your telescope and prevent unwanted shaking
• Made with Sorbothane® only available in the USA. Cheap imitations use silicon which do not absorb shock and may melt in the Sun
• Engineered by Celestron specifically to dampen vibrations
• Works on any surface

93514 AstroMaster/PowerSeeker Motor Drive by Celestron

Add right ascension (RA) tracking capabilities to any Celestron AstroMaster or PowerSeeker equatorial telescope, or any set-up that uses a Celestron CG-2 or CG-3 equatorial mount. This easy-to-install RA motor drive compensates for the Earth's rotation, so the telescope tracks a star's movement through the night sky from east to west. When the telescope mount is properly polar aligned and the RA drive is attached and running, the user need only make occasional adjustments in declination (Dec) to keep an object in the eyepiece for long periods of time.

The Celestron single-axis motor drive runs on a 9V battery, so there are no cords to get in the way. The drive can be used in either the Northern or Southern Hemisphere. To change hemispheres (reverse the motor's direction), simply flip the North/South (N/S) switch on the face of the motor drive. It is also simple to change the speed of the motor. A "Speed Rate Regulator" knob is located just under the power indicator, and can be turned in either direction to slow down or speed up the motor. Since solar system objects like the Sun and, Moon move through the sky at different rates than deep-sky objects do, this gives you the ability to match the motor's speed to the particular type of object you are observing.

93522 Dual-Axis Motor Drive for CG-4 Mounts by Celestron

Add tracking and tracking correction capabilities to any setup that uses a Celestron CG-4 equatorial mount. The right ascension motor drive allows the telescope to track a star's movement through the night sky, and the addition of a declination motor gives you the ability to make adjustments in all four directions with the included drive corrector hand controller.

With this drive system mounted on a properly polar-aligned telescope, the user can do visual observations or sketches without objects constantly drifting out of the field if view. Astrophotography is also possible when a mount has dual-axis drive with drive corrector capabilities.

The Celestron dual-axis motor drive system is powered by four D-cell batteries in a self-contained battery pack. The drive can be used in either the Northern or Southern Hemisphere. To change hemispheres (reverse the motor's direction), simply flip the "N/Off/S" switch on the drive corrector hand controller.

The drive corrector hand controller can be used to move the telescope at different speeds. This is achieved by choosing the desired speed on a switch marked "2x/4x/8x." Twice the sidereal rate, or 2x, is used for guiding on a star when doing astrophotography. The 4x speed is used to center objects in the eyepiece. The 8x speed can be used for centering objects in the finderscope as well as the eyepiece.

This package includes an RA and Dec motor, clutch, mounting brackets and hardware, drive corrector hand controller, and power pack.

93529 X-Cel LX 1.25" 2x Barlow Lens by Celestron

When inserted between the eyepiece and telescope, this X-Cel 2X Barlow lens doubles the magnification of all your 1.25" eyepieces. The premium apochromatic optics yield high contrast, sharp images, virtually free of false color.

The black anodized housing with orange highlights matches the eyepieces in the Celestron X-Cel LX line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves. A brass compression ring just inside the top of the X-Cel Barlow grabs your eyepiece gently but firmly when you turn the thumbscrew. Once the thumbscrew has been secured in place, the brass ring keeps your eyepiece in the Barlow instead of relying on the tip of the thumbscrew itself, offering a better grip and protecting the barrel from scratches.

The barrel of the Celestron X-Cel LX 2x Barlow is threaded to accept 1.25" filters, allowing you to change eyepieces without removing and re-attaching the filter from each eyepiece barrel.

• Quality X-Cel LX 2x Barlow doubles the magnification of any 1.25" eyepiece.
• 3-element apochromatic, fully multi-coated optics offer up bright, sharp images.
• A rubber grip helps to avoid accidental drops
• Barrel is threaded to accept standard 1.25" filters.
• A brass compression ring holds the eyepiece firmly in place.

93571 1.25" Dielectric Mirror Diagonal, Twist-Lock by Celestron

Ensure maximum light transmission without loss of optical quality with the Celestron Dielectric Star Diagonal, 1.25" with Twist-Lock. Upgrade your existing star diagonal to this premium one and enjoy brighter, sharper images without replacing your telescope.

This star diagonal reflects the telescope's light path 90° to provide a more comfortable viewing angle. In addition, the glass has 58 layers of dielectric coatings, which provide an over 99% reflective surface, delivering the maximum amount of light to the eyepiece. The twist-lock eyepiece holder secures any 1.25" eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. The twist-lock has an integrated 1.25" barrel stop that prevents 1.25" accessories with long barrels from damaging the mirror.

All the diagonal's mechanical parts are made of machined black anodized aluminum, except the twist lock rings, which are orange anodized for visibility. The interior of the barrel is glare threaded and painted flat black to prevent glare. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 1.25" with Twist-Lock is one of the highest quality 1.25" star diagonals that Celestron has ever offered.

• Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings
• Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes
• 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece
• Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment
• Accepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1.25" barrel

Standard Star Diagonals vs Dielectric Star Diagonal

The key specifications for a star diagonal are its reflectivity and its optical quality. This diagonal delivers top performance in both categories, with an over 99% reflective mirror and diffraction-limited optical quality. This ensures that virtually all the light collected by the telescope will reach the eyepiece without the diagonal affecting optical performance. Using a lower quality star diagonal can both dim the view and degrade optical quality. You can enjoy better views from your telescope by simply swapping out its diagonal for a premium one, like the Celestron Dielectric Star Diagonal.

93573 2" Dielectric Mirror Diagonal, Twist-Lock by Celestron

Ensure maximum light transmission without loss of optical quality with the Celestron Dielectric Star Diagonal, 2" with Twist-Lock. Upgrade your existing star diagonal to this premium one and enjoy brighter, sharper images without purchasing an entirely new telescope.

This star diagonal reflects the telescope's light path 90° to provide a more comfortable viewing angle. In addition, the glass has 58 layers of dielectric coatings, which provide an over 99% reflective surface, delivering the maximum amount of light to the eyepiece. This 2" star diagonal has the added benefit of allowing you to use larger 2" eyepieces with your telescope, providing a wider field of view, or standard 1.25" eyepieces with the stepdown adapter.

The twist-lock eyepiece holder secures eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. The diagonal has an integrated 2" barrel stop that prevents 2" accessories with long barrels from damaging the mirror.

All the diagonal's mechanical parts are made of machined black anodized aluminum, except the twist lock rings, which are orange anodized for visibility. The interior of the Schmidt-Cassegrain adapter and 2" barrel are glare threaded and painted flat black to prevent glare. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 2" with Twist-Lock is one of the highest quality 2" star diagonals that Celestron has ever offered.

This diagonal also comes with two interchangeable barrels to provide flexibility in connecting the diagonal to a wide variety of telescopes without the need for additional adapters. For telescopes, like refractors, which accept 2" barrels in their focuser, a standard 2" barrel is included. For Schmidt-Cassegrains (SCTs) that use a threaded connection to the focuser, a barrel with SCT threads is included. Both barrels thread onto the diagonal housing, providing a secure connection to the diagonal.

• Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings
• Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes
• 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece
• Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment
• Includes a stepdown adapter, so the diagonal accepts eyepieces, Barlow lenses, threaded filters, and other accessories in both 2" and 1.25" sizes
• Two interchangeable adapters allow you to switch between a Schmidt-Cassegrain thread adapter and a 2" barrel adapter so you can use this diagonal with a wide variety of telescopes

Standard Star Diagonals vs Dielectric Star Diagonal

The key specifications for a star diagonal are its reflectivity and its optical quality. This diagonal delivers top performance in both categories, with an over 99% reflective mirror and diffraction-limited optical quality. This ensures that virtually all the light collected by the telescope will reach the eyepiece without the diagonal affecting optical performance. Using a lower quality star diagonal can both dim the view and degrade optical quality. You can enjoy better views from your telescope by simply swapping out its diagonal for a premium one, like the Celestron Dielectric Star Diagonal.

93609 Universal Piggyback Mount by Celestron

A piggyback bracket is a simple astronomical accessory that can help you produce stunning photographs of the night sky. It allows you to attach a DSLR camera and lens to any Celestron SCT optical tube assembly and take advantage of the fact that your telescope has a dual-axis motor drive. When your telescope is running with the camera attached, you can take longer exposures without star trails, and capture details in objects that would have been impossible had your camera been attached to a photographic tripod or a telescope without a drive system.

Experiment with different camera lenses and subjects. Some photographers love to capture comets with a relatively long, fast lens, and the Milky Way, as well as a myriad combination of terrestrial and celestial scenes, are yours for the taking when you own a Celestron SCT, a piggyback mount, a DSLR camera, and a couple of lenses.

• A piggyback ride for your camera! Let your telescope do the driving while your camera takes beautiful wide-angle images of the sky.
• Use your own camera lenses to take photographs of the Milky Way, nebulae, the Moon, and more.
• Attaches easily to the top rear of any SCT in minutes.

93612 Ultima Pan Tilt Head Tripod by Celestron

The Ultima tripod is an excellent choice for those seeking a lightweight yet stable platform for a spotting scope, binocular or camera. With three leg sections and an adjustable center column, the tripod can be set in multiple configurations to get the exact height or stance needed for your terrain and conditions. Use the panning handle and tension knob to scan across the horizon in smooth motions and follow your subject as it moves. The Ultima is the perfect tripod for any outdoor excursion from bird watching to stargazing and everything in between.

• A stable-yet-lightweight, versatile, and easy-to-use tripod perfect for just about any application Smoothly pan the horizon or tilt the viewing angle up and down with two directional adjustments-even flip your optic sideways
• Customize the configuration of your tripod to fit any viewing conditions: three leg sections allow the tripod to work with virtually any user or terrain
• Extendable center column provides even more height when needed
• Includes a specially designed, protective carrying care for storage and transport
• Quick-release mounting plate allows you to attach your optic to the tripod in seconds and switch between optics with ease

Quick-Release Mounting Plate

Attach a wide range of optical and photographic equipment to your Ultima tripod in seconds with the quick-release mounting plate. This broad, square platform with protective padding is ideal for attaching binocular adapters, spotting scope mounting feet, camera gear, and more.

To up your viewing game, the platform also tilts up to 90° with a lock knob to secure it in place at any angle. For peace of mind, the quick-release plate has a safety mechanism that prevents it from sliding completely out of the pan head without pushing the release button.

Telescoping Center Column

The center column of the Ultima tripod can be extended to raise the tripod head when additional height is needed. To adjust the center column, twist the lock-knob and move the center column to the desired height. The maximum height when the tripod is fully extended is just under 67.7".

At the bottom of the center column, there is a retractable balance hook. This simple device can make all the difference in the stability of your tripod, especially on windy days. Just hang something heavy from the hook like a backpack and you'll be amazed at the difference. When the hook is not needed, it retracts up into the center column to stay neatly out of the way.

Protective Carrying Case

Take your tripod anywhere in its soft woven case with comfortable shoulder strap. When not in use, the case is the perfect place to store your tripod.

93619 H-alpha H-beta OIII Imaging Filter, Rowe-Ackermann Schmidt Astrograph (RASA) 8 by Celestron

Bring out the best in your nebulae astroimages with the H-alpha H-beta OIII (H?-H?-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.

Nebula Hunting

The H?-H?-OIII Imaging Filter for the 8" RASA is perfect for imaging emission nebulae like the North America Nebula (NGC 7000), Lagoon Nebula (M8), Orion Nebula (M42), and the Carina Nebula (NGC 3372). The imaging filter transmits key H?-H?-OIII wavelengths that produce high contrast for emission nebulae.

The transmission spectrum for the H?-H?-OIII Imaging Filter is 85% or greater at key wavelengths (486nm, 496nm/501nm, 656nm) and less than 0.5% transmission elsewhere. The H?-H?-OIII Imaging Filter for the 8" RASA is a narrowband filter that blocks much of the visible spectrum and only lets specific wavelengths through. Because of this, it will not work well on broadband emission objects, such as galaxies and star clusters.

Other similar imaging filters on the market have much narrower bandpasses at the critical H?-H?-OIII wavelengths, but these filters will actually block much of the incoming H?-H?-OIII light for an F/2 optical system. This is because the light is coming into the filter at a steeper angle, which causes a spectral shift. Using filters not designed specifically for use at F/2 will cause some of the light from the nebula to be blocked, resulting in a dimmer image. The Celestron H?-H?-OIII Imaging Filter for the RASA 8 was custom engineered to work at F/2, so none of the "good" light from the nebula is inadvertently blocked by the filter.

Body and Storage

The filter is machined aluminum black anodized cell with knurled rim for easy grip during installation. An anti-reflection coating has been added to the filter to help suppress reflections on the glass. The filter fits directly into the internal filter mount in the RASA 8's front lens cell, where the optical window normally mounts. By removing the clear window and replacing it with the filter, optical performance for the entire system is maintained. No other adapter is needed.

Each filter comes with a foam-lined plastic storage case and retaining ring to safely store the filter or the placeholder optical window glass that came with your RASA when not in use. You will also receive a spectral transmission graph unique to your specific unit, verifying its performance.

• Enhance imaging of nebulae with your 8" Rowe-Ackermann Schmidt Astrograph (RASA) by blocking light pollution, improving image contrast, and darkening the sky background.
• This filter transmits only the key H?-H?-OIII wavelengths from emission nebulae, providing high contrast that makes them "pop."
• This filter selectively blocks wavelengths of light from sources of light polluted skies and natural sky glow.
• Unlike similar filters with narrower bandpasses, this filter was engineered specifically to work with RASA's fast F/2 optics.
• 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.