® ēĘęėĚĈęĎĔē ĆēĚĆđ #11007 / #11008 / #11009
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Congratulations on your purchase of the Celestron CPC DeluxeHD telescope! The CPC DeluxeHD combines Celestron’s newly designed CPC Computerized mount with its new EdgeHD optical system. The CPC series uses GPS (Global Positioning System) technology to take the ơ Ƥ sky.
9 8 6 7 10 5 15 2 4 11 12 3 1 11 13 F A B C E D 14 ͙Ǥ ȋ Ȍ ͚Ǥ ͛Ǥ ͜Ǥ ͝Ǥ ͞Ǥ Ǥ Ǥ >> www.celestron.
The CPC DeluxeHD telescope comes completely pre-assembled and can be operational in a matter of minutes. The CPC and its accessories are Ǥ ǣ #11007 CPC Deluxe 800 HD Diameter 203 mm (8”) Edge HD Optics Focal Length 2032 mm f/10 Eyepiece 40 mm - 1.25” (51x) Finderscope 9x50 Diagonal 90° - 1.
Adjusting theTripod Height Note: When transporting your telescope, make sure that both clutches are somewhat loose; this will diminish the load placed on the worm gear assemblies and protect them from damage. Ǥ the height at which the tripod stands: ͙Ǥ ȋ Ƥ ͛Ǧ͙ȌǤ 2. Extend the leg to the desired height. 3.
The Eyepiece Ƥ Ǥ Ƥ star diagonal. To install the eyepiece: 1. Loosen the thumbscrew on the star diagonal so it does not obstruct the inner diameter of the eyepiece end of the diagonal. 2. Slide the chrome portion of the eyepiece into the star diagonal. ͛ǧ͞ 3. Tighten the thumbscrew to hold the eyepiece in place.
Aligning the Finderscope Ƥ ǡ ȋ ƤȌ Ƥ bracket and a spring loaded pivot screw (located on the left side of the ȌǤ Ƥ ǡ Ƥ Ǥ Ƥ
The CPC is controlled by Celestron’s NexStar hand controller designed ơǤ ͘͜ǡ͘͘͘ ǡ ǡ a few observing sessions. Below is a brief description of the individual components of the CPC’s NexStar hand controller: 1.
the telescope can create a model of the sky, which it uses to locate any Ǥ with the sky depending on what information the user is able to provide: uses the internal GPS receiver to acquire all the necessary time/ site information needed for the CPC to create an accurate model of the sky.
Ȉ ǯ Ǥ ȋ ǡ ǡ Ȍ Ǥ to the planets, the hand control has over 80 bright alignment stars to choose from (down to 2.5 magnitude).
Note: Once a One-Star Alignment has been done, you can use the Re-alignment feature (later in this section ) to improve your telescope’s pointing accuracy. Solar System Align Solar System Align is available in alt-az mode (scope mounted directly on the tripod) and equatorial mode (scope mounted on a wedge). Solar System Align is designed to provide excellent tracking and GoTo ȋ ǡ Ȍ align the telescope with the sky.
EQ One-Star Align >> ĊđĊĈęĎēČ Ćē ćďĊĈę Ǧ Ǧ ǡ however it only relies on the alignment of one star to align the telescope. Ǧ EQ Two-Star Align, but only using one star. ǡ from any of the catalogs in the CPC’s extensive database. The hand control has a key (4) designated for each of the catalogs in its database.
>> ĎēĉĎēČ đĆēĊęĘ The CPC can locate all 8 of our solar systems planets plus the Sun and Moon. However, the hand control will only display the solar system ȋ Ƥ ȌǤ planets, press the PLANET key on the hand control. The hand control will ǣ Ȉ Up and Down keys to select the planet that you wish to observe.
Tracking Rate – ǡ moves across the night sky. The tracking rate can be changed depending ǣ This rate compensates for the rotation of the Earth by moving the telescope at the same rate as the rotation of the Earth, but in the opposite direction.
>> ĈĔĕĊ ĊęĚĕ ĊĆęĚėĊĘ Setup Time-Site – Allows the user to customize the CPC display by changing time and location parameters (such as time zone and daylight savings). Anti-backlash – All mechanical gears have a certain amount of backlash or play between the gears. This play is evident by how long it takes for a star to move in the eyepiece when the hand control arrow buttons are pressed (especially when changing directions).
ơǦ scope. To compensate for this, the direction of the drive control keys can be changed. To reverse the button logic of the hand control, press the MENU button and select Direction Buttons from the Utilities menu. Use Ȁ ȋ͙͘Ȍ ȋ Ȍ or altitude (up and down) button direction and press ENTER.
and improving the tracking accuracy of the drive. This feature is for advanced astrophotography and is used when your telescope is polar Ǥ using PEC, see the section on “Celestial Photography”. to rebalance. When you are ready to slew the telescope to your next ǡ star and carefully center it in the eyepiece.
A telescope is an instrument that collects and focuses light. The nature of the optical design determines how the light is focused. Some telescopes, ǡ Ǥ ǡ ƪ ǡ use mirrors.
>> ĎėėĔė ĚĕĕĔėę đĚęĈčĊĘ help support and minimize lateral movement of the primary mirror during astrophotography. To use the mirror clutches: Mirror Clutch ͙Ǥ Ǥ ͚Ǥ ǡ very tight and can be turned no further.
deals with observational astronomy in general and includes information on the night sky and polar alignment. Up to this point, this manual covered the assembly and basic operation of your CPC telescope. However, to understand your telescope more thoroughly, you need to know a little about the night sky.
>> ĔđĆė đĎČēĒĊēę ȋĜĎęč ĔĕęĎĔēĆđ ĊĉČĊȌ Alt-Az position, it is still necessary to align the polar axis of the telescope (the fork arm) to the Earth’s axis of rotation in order to do long exposure astrophotography. To do an accurate polar alignment, the CPC requires an optional equatorial wedge between the telescope and the tripod.
>> ĎēĉĎēČ ęčĊ Ĕėęč ĊđĊĘęĎĆđ ĔđĊ ǡ other stars appear to rotate. These points are called the celestial poles Ǥ ǡ in the northern hemisphere all stars move around the north celestial pole. When the telescope’s polar axis is pointed at the celestial pole, it is parallel to the Earth’s rotational axis.
With your telescope set up, you are ready to use it for observing. This section covers visual observing hints for both solar system and deep ơ your ability to observe. >> ćĘĊėěĎēČ ęčĊ ĔĔē ǡ Ǥ ǡ face we see is fully illuminated and its light can be overpowering.
>> ćĘĊėěĎēČ ĊĊĕ ĐĞ ćďĊĈęĘ Ǧ Ǥ ǡ ǡ ơ nebulae, double stars and other galaxies outside our own Milky Way. Ǧ Ǥ ǡ ǦǦ moderate power is all you need to see them. Visually, they are too faint Ǥ ǡ they appear black and white.
After looking at the night sky for a while, you may want to try photographing it. Several forms of celestial photography are possible with your telescope, including short exposure prime focus, eyepiece ǡ ǡ Ǥ Each of these is discussed in moderate detail with enough information to get you started. Topics include the accessories required and some simple techniques.
>> ĞĊĕĎĊĈĊ ėĔďĊĈęĎĔē angular sizes, primarily the Moon and planets. Planets, although physically quite large, appear small in angular size because of their Ǥ Ƥ ǡ ǡ to make the image large enough to see any detail.
5. Mount your camera body onto the T-Ring the same as you would any other lens. ͞Ǥ Dz dz Ǥ ͟Ǥ Ǥ ͠Ǥ Ƥ Ǥ ͡Ǥ ƤǤ time consuming process. ͙͘Ǥ Ǥ 11. Monitor your guide star for the duration of the exposure using the buttons on the hand controller to make the needed corrections. 12.
metering which lets you know if your picture is under or overexposed. Ǥ ǯ Ƥ metering and changing shutter speeds Reducing Vibration Releasing the shutter manually can cause vibrations, producing blurred photos. To reduce vibration when tripping the shutter, use a cable release.
Ǣ ǡ ƤǦǦ view, image size and pixel resolution.
While your CPC telescope requires little maintenance, there are a few things to remember that will ensure your telescope performs at its best. >> ĆėĊ Ćēĉ đĊĆēĎēČ Ĕċ ęčĊ ĕęĎĈĘ ǡ Ȁ of your telescope. Special care should be taken when cleaning any instrument so as not to damage the optics. ǡ ȋ of camel’s hair) or a can of pressurized air.
To accomplish this, you need to tighten the secondary collimation ȋȌ Ƥ skewed light.
ǡ ȋ͙͙͜͡͡Ǧ͙͘Ȍ Ȃ Ƥ in lunar and planetary observing. They reduce glare and light scattering, increase contrast through selective Ƥǡ Ƥ resolution, reduce irradiation and lessen eye fatigue.
ȃ Optical Specification CPC Deluxe 800 HD – #11007 CPC Deluxe 925 HD – #11008 Design 203 mm (8”) EdgeHD Optics 235 mm (9.25”) EdgeHD Optics Focal Length 2032 mm 2350 mm F/ratio of the Optical System 10 10 Primary Mirror: Fine Annealed Pyrex Starbright XLT Coating Fine Annealed Pyrex Starbright XLT Coating 2.75” 3.
ĔċęĜĆėĊ ĕĊĈĎċĎĈĆęĎĔēĘ Ports Period Error Correction Tracking Rates Tracking Modes Alignment Procedures Database Complete Revised NGC Catalog Complete Messier Catalog Complete IC Catalog Complete Caldwell Abell Galaxies Solar System objects Famous Asterisms Selected CCD Imaging Objects Selected SAO Stars RS-232 communication port on hand control, Autoguider Port, 2 Auxiliary Port, PC Port Permanently programmable Sidereal, Solar, Lunar Alt-Az, EQ North and EQ South Sky Align, Auto Two-Star Align, Two-Sta
Celestial pole ǯ north or south pole onto the celestial sphere. Celestial Sphere An imaginary sphere surrounding the Earth, concentric with the Earth’s center. Collimation The act of putting a telescope’s optics into perfect alignment.
R– V– ƪ A telescope in which the light is collected by means of a mirror. Resolution The minimum detectable angle an optical system Ǥ ơ ǡ to the minimum angle, resolution. The larger the aperture, the better the resolution. Right Ascensionǣ ȋ Ȍ The angular distance of a celestial ǡ seconds along the Celestial Equator eastward from the Vernal Equinox.
ǧ ǧ͚͚͛ ȍ Ȏ You can control your NexStar telescope with a computer via the RS-232 port on the computerized hand control and using an optional RS-232 ȋ͚͗͛͘͡͡ȌǤ ǡ popular astronomy software programs. Communication Protocol ͘͘͡͞ Ȁ Ǥ Ǥ ͙͞ hexadecimal.
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ηη ĊĆėđĞ ĊęĊĔė čĔĜĊėĘ čĔĜĊė ĆęĊ ĊĆĐ ĔĚėđĞ ĆęĊ Quadrantids Jan 01-Jan 05 4-Jan Lyrids Apr 16-Apr 25 21-Apr 15 pi-Puppids Apr 15-Apr 28 23-Apr Var. eta-Aquarids Apr 19-May 28 5-May 60 June Bootids Jun 26-Jul 02 27-Jun Var. July Phoenicids Jul 10-Jul 16 13-Jul Var.
A. Celestron warrants this telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship. As a condition to the obligation of Celestron to repair or replace such product, the product must be returned to Celestron together with proof-of-purchase satisfactory to Celestron. B.
Ǥ Ǥ #OLUMBIA 3TREET s 4ORRANCE #! 5 3 ! 4ELEPHONE s &AX FCC Statement This device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.
A FLEXIBLE IMAGING PLATFORM AT AN AFFORDABLE PRICE Superior flat-field, coma-free imaging by the Celestron Engineering Team Ver. 04-2013, For release in April 2013.
The Celestron EdgeHD A Flexible Imaging Platform at an Affordable Price By the Celestron Engineering Team ABSTRACT: The Celestron EdgeHD is an advanced, flat-field, aplanatic series of telescopes designed for visual observation and imaging with astronomical CCD cameras and full-frame digital SLR cameras. This paper describes the development goals and design decisions behind EdgeHD technology and their practical realization in 8-, 9.25-, 11-, and 14-inch apertures.
EdgeHD Series Edge HD 800 Edge HD 925 Edge HD 1100 Edge HD 1400 FIGURE 1. Celestron’s EdgeHD series consists of four aplanatic telescopes with 8-, 9.25-, 11-, 14-inch apertures. The optical design of each instrument has been individually optimized to provide a flat, coma-free focal plane. Each EdgeHD optic produces sharp images to the edge of the view with minimal vignetting.
OPTICAL ABERRATIONS For those not familiar with the art of optical design, this brief primer explains what aberrations are and how they appear in a telescopic image. OFF-AXIS COMA Coma is an off-axis aberration that occurs when the rays from successive zones are displaced outward relative to the principal (central) ray. A star image with coma appears to have wispy “hair” or little “wings” extending from the image.
THE OPTICAL PERFORMANCE OF THE EDGEHD COMPARED TO OTHER SCTS CLASSIC SCT “COMA-FREE” SCT EDGEHD 100 μm On-Axis 5.00 mm 10.00 mm 15.00 mm 20.00 mm Off-axis distance (millimeters) FIGURE 2. Matrix spot diagrams compare the center-to-edge optical performance of the classic SCT, “coma-free” SCT, and EdgeHD. The EdgeHD clearly outperforms the other optical systems. The classic SCT shows prominent coma.
4. OPTICAL PERFORMANCE OF THE EDGEHD Optical design involves complex trade-offs between optical performance, mechanical tolerances, cost, manufacturability, and customer needs. In designing the EdgeHD, we prioritized optical performance first: the instrument would be diffraction-limited on axis, it would be entirely coma-free, and the field would be flat to the very edge. (Indeed, the name EdgeHD derives from our edge-of-field requirements.
5. MECHANICAL DESIGN IMPROVEMENTS Centering the primary mirror is even more demanding. In the classic SCT, the primary mirror is attached to a sliding “focus” tube. When you focus the telescope, the focus knob moves the primary mirror longitudinally. When you reverse the direction of focus travel, the focus tube that carries the primary can “rock” slightly on the baffle tube, causing the image to shift. In the classic SCT, the shift does not significantly affect on-axis image quality.
14” ƒ/10 Coma-Free SCT -0.8 mm -0.4 mm 0.0 mm +0.4 mm 14” ƒ/11 Flat-Field EdgeHD +0.8 mm -0.8 mm -0.4 mm 0.0 mm +0.4 mm +0.8 mm On-axis 5 mm off-axis 10 mm off-axis 15 mm off-axis 20 mm off-axis Spot diagrams plotted for 0.0, 5, 10, 15, and 20mm off-axis; showing λ = 0.486, 0.546, and 0.656μm. FIGURE 5. In a 14-inch coma-free SCT, the smallest off-axis star images lie on the curved focal surface indicated by the gray line.
We cut corrector blanks from large sheets of the glass, then run them through a double-sided surfacing machine to grind and polish both surfaces to an optical finish. The blanks are inspected and any with defects are discarded. The Johnson/Celestron method for producing the polynomial aspheric curve is based on precision “master blocks” with the exact inverse of the desired curve.
EDGEHD’S CLOSE-UP ON THE PELICAN NEBULA FIGURE 8. After all the testing is done, the ultimate test is the night sky. This close-up image of the Pelican Nebula testifies to the EdgeHD’s ability to focus clean, neat, round star images from center to edge. The telescope was a 14-inch EdgeHD on a CGE Pro Mount; the CCD camera was an Apogee U16m. The mage above shows a 21.5×29.8mm section cropped from the original 36.8mm square image.
Autocollimation Testing Telescope being checked Precision optical flat Beamslitter Eyepiece and Ronchi grating Green Laser (532 nm) FIGURE 9. In autocollimation testing, light goes through an optical system, reflects from a plane mirror, and passes through again. This super-sensitive test method doubles the apparent size of all errors. After we remove each set of optics from the autocollimator, we send the components to our in-house coating chamber.
Throughout the telescope-building process, we maintain a quality-assurance paper trail for each instrument. All test images are numbered and cross referenced. Should a telescope be returned to Celestron for service, we can consult our records to see how well it performed before it left our facility. Once a telescope has passed the FAT, we apply Loctite® to the set screws to permanently hold the alignment of the corrector plate. The instrument is then inspected carefully for cosmetic defects.
Imaging with Celestron EdgeHD Telescopes 1. 2. EdgeHD Aperture Focal Ratio Focal Length Secondary Ø Obstruction1 Back Focus Distance Adapter Thread Size Image Circle Linear Ø Angular Ø Airy Disk Angular Ø Linear Ø Rayleigh2 Image Scale arcsec/pixel (6.4 μm pixel) EdgeHD 800 203.2mm ƒ/10.456 2125mm 68.6mm 34 % 133.35mm 2.00”-24 tpi 42mm Ø 68.0 arcmin 1.36” Ø 14.0μm Ø 0.68” 0.62”/pix EdgeHD 925 235mm ƒ/9.878 2321mm 85.1mm 36 % 146.05mm 3.29”-16 tpi 42mm Ø 62.2 arcmin 1.18” Ø 13.2μm Ø 0.
Celestron's EdgeHD: The Versatile Imaging Platform EdgeHD 800 5.25 inches 133.35±0.5 mm Small T-Adapter Camera Adapter Digital SLR Reducing Ring Small T-Adapter T-to-1.25” Adapter Webcam Large T-Adapter T-Ring Adapter Digital SLR EdgeHD 925, 1100, and 1400 5.75 inches 146.05±0.5 mm Large T-Adapter T-to-C Adapter Astro Video Camera Large T-Adapter T-system Spacer CCD Camera FIGURE 14.
10. CONCLUSION The classic Schmidt-Cassegrain telescope introduced tens of thousands of observers and imagers to astronomy and nurtured their appreciation for the wonder of the night sky. Today, observers and imagers want a more capable telescope, a telescope that provides sharp close-ups as well as high-quality images all the way across a wide, flat field of view. But, consumers want this advanced optical technology at an affordable price. Celestron has designed the EdgeHD to meet customers’ needs.
Appendix A: Technical Profiles of EdgeHD Telescopes 8-inch When evaluating astronomical telescopes, astroimagers must bear in mind the many factors that influence image quality. The major factors at play are: Airy Disk and Seeing Blurs • The sampling by pixels of the image sensor • The diffraction pattern of the telescope 9.25-inch • The image formed by the telescope To aid astroimagers, this Appendix presents a spot matrix plot for each of the telescopes in the EdgeHD series.
Celestron EdgeHD 800 On-axis, the spots show that the 8-inch EdgeHD is diffractionlimited in both green (for visual observing) and red (for imaging). And because blue rays are strongly concentrated inside the Airy disk, the 8-inch EdgeHD is diffraction-limited in blue light. Off-axis, its images remain diffraction-limited over a field larger than the full Moon. For an imager using an APS-C digital SLR camera, relative illumination falls to 84% at the extreme corners of the image.
.Celestron EdgeHD 925 The spot matrix shows that on-axis images are diffraction limited at all three wavelengths, and remain diffraction-limited over the central 15mm. While blue and red are slightly enlarged, in green light images are fully diffraction-limited over a 38mm image circle. The size of the off-axis blue and red spots remain nicely balanced.
Celestron EdgeHD 1100 The 11-inch EdgeHD is optimized to produce its sharpest images in green and red; at these wavelengths it is diffractionlimited over roughly two-thirds of the full 42mm image circle. The relative illumination remains 100% across the central 16mm, then falls slowly to 83% at the very edge of a 42mm image circle. For pictorial images with an APS-C digital SLR camera, flats are unnecessary. For monochrome imaging with an astronomical CCD camera, we always recommend making flat-field images.
Celestron EdgeHD 1400 In the matrix spot diagrams, note the tight cluster of rays in green light, and the well balanced spherochromatism in the blue and red. These spots are far better than spots from a fine apochromatic refractor of the same aperture. In green light, the EdgeHD 1400 is diffraction-limited over a 28mm image circle, although atmospheric seeing enables it to display its full resolution only on the finest nights.
Appendix B: TECHNICAL PROFILE OF THE EDGEHD 0.7× FOCAL REDUCER LENS Perhaps the most useful accessory you can get for an EdgeHD telescope is a focal reducer. Although the long focal length is a great advantage in capturing detailed images of nebulae, galaxies, and especially of planetary nebulae, it also means the field of view is sometimes smaller than desirable. The relatively slow focal ratio also means rather long exposure times. We designed our 0.7× Focal Reducer to provide a field of view 1.
Celestron EdgeHD 0.7× Reducer Large T-Adapter T-Ring Adapter Digital SLR EdgeHD 1100 and 1400 5.75 inches 146.05±0.5 mm 0.7× Reducer Large T-Adapter T-system Spacer CCD Camera The matrix spot diagrams show that the bulk of rays cluster tightly in or near the Airy disk, with a diffuse scatter most strongly seen in the red light. Plotted at the same scale as those for the EdgeHD, the spots demonstrate that the focal reducer’s star images are even smaller than those of the telescopes.
Image by André Paquette Imagine the thrill of seeing the first images from your Celestron EdgeHD! A quick glance at the whole image shows that you have captured your target’s faint outer extensions. Across the field, from one side to the other, star images are sharp, crisp, and round. As you process your image, fine details in the target object reveal themselves. Star clouds, delicate dust lanes, subtle HII regions—it’s all there, credit to your skill and the design of your EdgeHD telescope.
The Celestron EdgeHD • ©2013 by Celestron • All rights reserved. Torrance, CA 90503 U.S.A. • www.celestron.
Combining Celestron’s newly designed dual fork arm computerized mount with its award winning EdgeHD optical system, the NEW CPC Deluxe HD Series offers you a high definition experience! 80 mm Guidescope Package 52309 CPC Deluxe 1100 HD 11009 NexGuide Autoguider 93713 Nightscape CCD Camera 95555 HD Pro Wedge Mount 93664 Accessorize your CPC Deluxe HD to create the ultimate telescope for astro imaging + Nightscape One shot color imaging camera with 10.
CPC Deluxe 800 HD 11007 CPC Deluxe 925 HD 11008 CPC Deluxe 1100 HD 11009 The wait is over! Celestron’s award winning EdgeHD optical system is now available on a newly designed top-of-the-line dual fork arm computerized mount – The CPC Deluxe HD. Available in 8”, 9.
