Optical Accessories

2-inch XLT Diagonal (SCT)

Introducing our new 2" XLT Diagonal. This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces. Featuring our premier StarBright XLT coatings, this unit has an interferometer tested 10th wave flat mirror.

This premium diagonal is designed to work with Schmidt-Cassegrain telescopes.

A sturdy aluminum carrying case for travel and protection comes standard.

Features:

• 2" Diagonal (for SCT)
• Celestron's high performance XLT coating for maximum reflectivity >96%
• Interferometer tested 10th wave flat mirror
• All machined housings for accurate optical alignment
• Aluminum case for storage and protection

Green Laser Optical Kit

	UpClose 10x50 Binoculars 10x50 UpClose binoculars offer a wide field of view making them great for astronomy, sporting events, outdoor and nature use, and many other activities
	Green Laser Pointer Green laser is 20 to 30 times brighter than red lasers. Perfect for pointing out astronomical objects in the night sky. Also works great for lectures and presentations.
	Red LED Flashlight Red LED flashlight (5 Red LEDs) is ideal when using it under the stars to preserve your night vision. Also good for use in nighttime hiking, hunting, and other activities where white light is distracting.

Visit our Green Laser Optical Kit page for more information.

Laser Finderscope Kit

Features:

• 5mW green laser
• Two Mounting brackets; one for dovetail mounts, one for SCT telescope
• Quick release dovetail attachment allows dual use as a pointing device for your telescope or as a hand held star pointer.
• X-Y alignment screws for quick and accurate alignment

The Telescope Mounted Laser Finderscope Kit includes:

• Green Laser Finder (with two alignment screws and one mounting screw)
• Mounting Bracket With Dovetail 
• Mounting Bracket With Holes (SCT)
• Long life CR123A battery 

Erect Image Diagonal - NexStar 4SE

Threads onto the back of the NexStar 4SE. This design allows you to look into the telescope at a 45° angle, at images that are oriented properly, meaning the image is upright and correct from left to right.

2-inch XLT Diagonal (Refractor)

Introducing our new 2" XLT Diagonal. This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces. Featuring our premier StarBright XLT coatings, this unit has an interferometer tested 10th wave flat mirror.

This premium diagonal is designed to work with refractor telescopes.

A sturdy aluminum carrying case for travel and protection comes standard.

Features:

• 2" Diagonal (for refractor)
• Celestron's high performance XLT coating for maximum reflectivity >96%
• Interferometer tested 10th wave flat mirror
• All machined housings for accurate optical alignment
• Aluminum case for storage and protection

Binocular Viewer, Stereo

The Stereo Binocular Viewer allows you to adapt two eyepieces to your telescope and view with both eyes simultaneously. In addition to eliminating eye fatigue associated with viewing through one eye for a prolonged period of time, this bino viewer also provides a three dimensional effect while observing many celestial objects.

The Stereo Binocular Viewer will also improve contrast on deep sky objects as well as solar system objects. The Stereo Binocular Viewer is designed to work with Schmidt-Cassegrain telescopes (SCT) and many refracting telescopes.

Features high quality FMC BAK-4 prisms reduce light loss. Each unit is quality control inspected for collimation and performance.

The Stereo Binocular Viewer requires you use two eyepieces of equal focal lengths and optical design.

Features:

• Fully Multi-Coated BAK-4 prisms
• Foam lined aluminum storage case
• Eyepiece diopter scales for sharp focus

Diagonal, Erect Image - 1.25 in - 45°

Celestron’s 1-1/4" Erect Image Diagonals are an Amici prism design. This design allows you to look into the telescope at a 45° angle, at images that are oriented properly, meaning the image is upright and correct from left to right.

Diagonal, Erect Image - 1.25 in - 90°

Celestron’s Erect Image Diagonals are an Amici prism design. This design allows you to look into the telescope at a 90° angle, at images that are oriented properly, meaning the image is upright and correct from left to right.

Diagonal, Star - 1.25 in

Our Star Diagonal lets you view objects that are at a 90° angle from the direction the telescope is pointing, thereby allowing comfortable viewing when the telescope is pointed at, or near, the zenith (i.e. directly overhead). The resulting image is right side up, but will be reversed from left to right.

Diagonal, Mirror - 2 in

This high quality 90-degree multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces.

A much higher quality than standard diagonals, it fits all rear cells of Schmidt-Cassegrains (comes standard with CGE 1400). Includes an adapter to accept 1 1/4" eyepieces and an adapter to use with refractor telescopes.

Finderscope Kit - Quick Release

Includes a bracket and 50mm finderscope

Finder Bracket - Quick Release

For 50mm finderscopes:C8, C9-1/4 & C11

A unique bracket for 50mm finderscopes, it’s designed for 8", 9 1/4" and 11" Schmidt-Cassegrain Telescopes. No tools are required, and once it’s aligned, you can take it off and put it on without losing alignment.

Bracket includes necessary mounting hardware. The additional weight of this accessory may require that you use additional optional counterweights for your telescope.

Finderscope only - 8X20 Erect Image

This 8x20 finderscope features an erect image.

Finderscopes are secondary scopes, used to help locate objects in the main telescope. The larger the finderscope, the more you'll see, to an upper limit of 50mm.

Units larger than 50mm have too narrow a field of view to be useful. Finderscopes mount onto the main telescope tube and are an invaluable tool in locating objects for viewing.

Finderscope only - 6x30

Finderscopes are secondary scopes, used to help locate objects in the main telescope. The larger the finderscope, the more you'll see, to an upper limit of 50mm.

Units larger than 50mm have too narrow a field of view to be useful. Finderscopes mount onto the main telescope tube and are an invaluable tool in locating objects for viewing.

Finderscope only - 9x50

A high quality, economical 9x50 finderscope with fully coated lenses and a 5.8° field of view.

Finderscopes are secondary scopes, used to help locate objects in the main telescope. The larger the finderscope, the more you'll see, to an upper limit of 50mm.

Units larger than 50mm have too narrow a field of view to be useful. Finderscopes mount onto the main telescope tube and are an invaluable tool in locating objects for viewing.

Finderscope, Star Pointer

Finding objects couldn’t be easier! A 1x, or unit power finderscope designed so you can point the telescope while scanning the sky with both eyes. A mirror lens projects the image of a LED illuminated pinpoint into the line of sight, providing you with a red dot of light to center on the object you want to view.

Something like having a laser pointer that reaches into the sky, it greatly simplifies finding objects. The brightness level is adjustable, and the Star Pointer can be used during daytime observing as well. Attaches to any telescope easily.

Polar finder CG-5 (Adv Mount)

This useful accessory speeds accurate polar alignment by providing a means of visually aligning your German equatorial mount with Polaris and true North. As a result, you can spend more time observing and less time setting up. The finderscope has an easy to use cross hair reticle.

For use with CG-5 (Advanced) mounts.

Features:

• Polar alignment reticle for both Northern and Southern Hemispheres
• Eyepiece focus adjustment to achieve sharp focus on reticle

Polar finder CG-4 (Omni Mount)

This useful accessory speeds accurate polar alignment by providing a means of visually aligning your German equatorial mount with Polaris and true North. As a result, you can spend more time observing and less time setting up. The finderscope has an easy to use cross hair reticle.

For use with CG-4 (Omni) mounts .

Features:

• Polar alignment reticle for both Northern and Southern Hemispheres
• Eyepiece focus adjustment to achieve sharp focus on reticle

Finderscope, Polar Axis Kit for CGE

The Polar Axis Finder is designed to minimize polar alignment time while maintaining maximum accuracy of your CGE equatorial mount.

This Polar Finder has a finely etched and illuminated reticle designed to assist you in visually aligning your CGE mount with Polaris and the North Celestial Pole.

It includes finderscope with eyepiece focus, illuminator, battery pack and mounting bracket. Works for both northern and southern hemispheres. Use two AA batteries(user supplied).