Celestron Eyepiece and Filter Kit for Telescopes - 2" - 94305
With the largest aperture of the Celestron CPC GPS XLT line, the Celestron CPC 1100 GPS XLT Schmidt-Cassegrain Telescope delivers the most light gathering power and a limiting magnitude of nearly 15. The Celestron CPC 1100 GPS XLT takes full advantage of its vast database of thousands of NGC and Abell galaxies and provides a new level of detail to all your favorite deep sky objects.
The Celestron 11-Inch CPC Schmidt-Cassegrain with StarBright XLT Coatings offers innovative technology that will allow you to look deep into space. This scope combines new SkyAlign alignment technology, advanced engineering, and a bold new design, all at an affordable price.
In fact, Celestron's Professional Computerized (CPC) Series with revolutionary SkyAlign alignment technology redefines everything that amateur astronomers are seeking. They offer quick and simple alignment, GPS, unsurpassed optical quality, ease of setup and use, advanced ergonomics, enhanced computerization, and value for money. The 11-inch CPC truly has it all.
The Celestron CPC Series includes an internal GPS receiver that automatically downloads the date and time from orbiting satellites, pinpointing the telescope's precise location. This eliminates the need for you to input the date, time, longitude, and latitude manually.
Thanks to SkyAlign, alignment is a breeze. Simply locate and manually point the telescope towards three bright celestial objects - even the moon and bright planets will work. Celestron's NexStar software technology will then model the night sky to determine the position of every star, planet, and celestial object above the horizon.
Once aligned, the remote hand control allows direct access to each of the celestial catalogs in its remarkably user-friendly database. The CPC's database contains more than 40,000 celestial objects, including the Caldwell Catalog, as well as NGC Galaxies, nebulae, and planets. User-definable filter limits make navigating through this expansive database quicker and easier. When using the "filter limits" feature, only those objects that are above the horizon at your exact time, date, and location will be displayed.
The new CPC Series telescopes feature meticulously matched and hand-figured optical systems manufactured in Celestron's facilities in Torrance, California. In addition, the CPC is available with StarBright XLT high-performance optical coatings. These use state-of-the-art, thin-film, vacuum-deposition technology. To ensure consistent optical coatings of the highest quality, the process is tightly monitored and controlled by highly trained technicians. The result is image clarity so stunning it must be seen to be believed.
This telescope includes the NexRemote software, enabling you to operate it remotely from a PC or laptop. NexRemote supplicates all of the functions and features of the NexStar software on the standard NexStar Hand Control. It also offers speech support, allows you to create and save custom tours, and uses Night Vision Mode to preserve night vision. The drive base and mechanics have been redesigned with larger gears and a quick-release clutch. It includes a new heavy-duty steel tripod with accessory tray and center leg support bracket to ensure stability.
- 40mm Plossl eyepiece (70x)
- NexRemote software CD with license
- RS-232 cable to connect telescope to PC or laptop
- Car battery adapter
Powering your Celestron CPC Telescope
The Celestron CPC Series Telescopes include a DC power cable, the kind you can plug into a automobile cigarette lighter. The CPC series telescopes do not take batteries. Won't take batteries! What! Actually this is a good thing. These larger telescopes eat through batteries pretty quickly. Its best to have a more reliable power source. A Celestron PowerTank is great for traveling to darker sky locations.
Astrophotography with the Celestron CPC Telescopes
While astrophotography could not be summed up here in one paragraph, a very common question for the CPC telescopes is how to connect a camera to it. Astrophotography is a hobby of patience and lots of trial and error, and plenty of errors will be had once you get started. But the rewards of good images is well worth it.
Available Recommended Accessories
The Celestron CPC Telescopes have many enhancement accessories available.
The 11 Inch CPC Telescope includes a 40mm Plossl Eyepiece. The 11 Inch CPC focal length is 2800mm so this included eyepiece will yield you 70x magnification. To get the most from your new CPC Telescope, we recommend you have a wide selection of eyepieces for high power viewing as well as wide-field viewing.
- 4mm (700x Magnification)
- 6mm (467x Magnification)
- 9mm (311x Magnification)
- 15mm (187x Magnification)
- 32mm (88x Magnification)
This wider array of eyepieces will enhance your viewing of lunar and planetary surfaces. Select the Celestron Eyepiece and Filter Kit - 1.25 Inch Format as a great starter accessory for getting the most of your new Celestron 11 Inch CPC Telescope.
Upgrade to a 2 Inch Diagonal and 2 Inch format Eyepieces
2 Inch Format Eyepieces will deliver a wider field of view. Instead of only having the Andromeda Galaxy in your field of view, now you can also have the same view but with its surroundings. A 2-Inch format eyepiece also gives the feeling of "spacewalking" into the view. Your eyes see substantially more field of view and many find that the 2 inch format eyepieces are more comfortable to view into.
Before you can use a 2 inch format eyepiece on the 11 inch CPC telescope, you must upgrade the 1.25 inch format diagonal that is included with the telescope. By changing to a larger 2 inch format diagonal you are now able to use 2 inch format eyepieces. Most 2 inch format diagonals also include a "reducer" adapter that will continue to allow you to use your 1.25 inch format eyepieces.
Here are some choices of upgrades to change your 11 Inch CPC Telescope to use 2 Inch Format Eyepieces:
Upgraded Diagonal, now select some premium 2 inch format eyepieces
Its common to hear that your telescope is only as good as your eyepiece. The eyepiece is how you deliver the image your telescope has gathered to your eye. A quality eyepiece can mean the difference of seeing major amounts of detail. Here are some favorite choices for 2 Inch format eyepieces:
Power Adapters and Power Sources
The Celestron CPC telescopes include a car battery adapter power cord for powering your telescope through your vehicle.
The Celestron PowerTank will give you many nights of viewing with your CPC telescope on one single charge. This rechargeable battery can be used over and over and even includes a powerful spotlight for cleanup and tear-down of your equipment. No more lost accessories left out overnight! The PowerTank is the best choice for powering your CPC telescope and is very convenient.
Protect your Celestron CPC Telescope with a Hard Case from JMI Jims Mobile
Jims Mobile (JMI Inc.) has been in the Telescope Accessory business for decades. We have selected JMI to provide our customers hard cases for the many popular telescopes available today. If your moving your telescope to dark sky locations, there is no better way to transport your CPC than in a custom fit JMI Hard Case.
Ready For Astrophotography?
The rewards of capturing images from space are endless - so are the accessories and techniques for doing it! The Celestron CPC telescopes are an amazing tool for astrophotography. While we are not going into long detail of astrophotography technique, we will cover here what accessories are used for astrophotography with the CPC series telescopes. There are different methods of mating your particular camera to the CPC, or other choices of astrophotography tools you should know about:
DSLR Imaging - One of the fastest growing and most popular methods of astrophotography is using DSLR Cameras. The most popular digital SLR cameras are from Nikon and Canon. To connect a DSLR camera to your CPC telescope, you will need 2 pieces - A T-Adapter and a T-Ring.
To connect your DSLR camera you will need to remove the lens from the camera, and replace it with a T-Ring. With the appropriate T-Ring attached to your DSLR camera you will then be able to connect your camera body directly to the T-Adapter connected to your CPC telescope.
Preventing Dew with the 11 Inch CPC Telescope
Dew forming on the lens of your telescope can quickly end an evening of observing. Once dew has formed, its very difficult to get rid of it. The answer is to prevent it from happening at all. Dew prevention can mean taking full advantage of those rare clear sky evenings or packing it in early.
There are two methods of preventing dew from forming. Dew Shields and Dew Heaters.
About Celestron Schmidt-Cassegrain Telescopes
Celestron’s excellent Schmidt-Cassegrain telescopes are compact and portable and represent the best all-purpose design for a wide variety of uses from terrestrial and deep sky viewing to astrophotography.
Catadioptrics use a combination of mirrors and lenses to "fold" (reflect) the light path and form an image. In a Schmidt-Cassegrain, the light enters through a thin aspheric Schmidt correcting lens. It then strikes the spherical primary mirror. It is reflected back up the tube and intercepted by a small secondary mirror which reflects the light out an opening in the rear of the instrument where the image is formed at the eyepiece.
Catadioptrics are the most popular and most modern type of telescope optical design and are marketed throughout the world in 3.5" and larger apertures. Catadioptric telescopes combine the practical advantages of lenses and mirrors while eliminating their disadvantages. They offer the clarity and contrast of refractors with the low aberration of reflectors. Catadioptrics have an average focal ratio of f/10, which is wide enough for all types of photography. They are also easier to maintain because all optical elements are solidly mounted and rigidly collimated. Catadioptric telescopes provide the best possible combination of light gathering power, long focal length, portability and affordability.
- Very versatile, best all-purpose telescope design
- Combines the optical advantages of both lenses and mirrors while eliminating their disadvantages
- Excellent optics and razor sharp images over a wide field
- Excellent for deep sky observing and astrophotography as well as terrestrial viewing
- Very good for lunar, planetary and binary star observing
- Focal ratio generally around f/10, it also has the best near focus capability of any type of telescope
- Closed tube design reduces image-degrading air currents
- Extremely compact and portable
- Easy to use, durable and virtually maintenance free
- Large apertures at reasonable cost and less expensive than equivalent aperture refractors
- More accessories available than with other types of telescopes
- More expensive than Newtonians of equal aperture
- Slight light loss due to secondary mirror obstruction compared to refractors The Maksutov-Cassegrain is similar to the Schmidt-Cassegrain with essentially the same advantages and disadvantages. It uses a thick meniscus correcting lens with a strong curvature and a secondary mirror that is usually an aluminized spot on the corrector. The Maksutov secondary
Telescope, Finderscope, Plossl eyepiece, NexRemote software CD with license, RS-232 computer cable, Car battery adapter
Dimensions & Specifications
40mm Plossl (70x)
50mm w/quick release bracket
Good for Astrophotography
Highest Useful Magnification
Dual Fork Arm
Objective Lens Size Code
Viewing the Moon
Viewing Galaxies/Star Clusters
Viewing the Planets
Celestron CPC GPS Telescopes
For the Expert
65 lbs. Weight Optical Tube
DocumentationDownload Celestron CPC Telescope User Manual
Download Celestron CPC Telescopes Information Sheet
We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.
Celestron has a limited lifetime binocular and spotting scope warranty and all other products have a 2 year manufacturer's warranty covers against defects is provided. If you have specific questions about this product's warranty please contact Celestron's Customer Service department at 310-328-9560.
Return & Exchange Policy
At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.
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