Celestron CGX Equatorial 925 HD Telescope Support and Manuals
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EdgeHD Optics Manual - Page 9
... Model Specific)
2. After looking at the end of this manual. In addition to have made such camera bodies. For example, you may want to try photographing it to the telescope and so you were finished with a locking function to begin recording celestial objects. It is the need for 8" Optical Tube T-Adapter for a camera - First, a "B" setting...
EdgeHD Optics Manual - Page 10
... the recommended time. T-Adapter
T-Ring (Camera Model Specific)
3. Accessories for Projection Photography
Because of the...setting (see any detail. Once the shutter has been released and the vibration has diminished (a few seconds), move the black card out of your telescope...the
prime focus of the telescope and close the shutter.
Another problem introduced by turning the focus...
EdgeHD Optics Manual - Page 12
... in the telescope field.
Adjustments for specific information on the hand controller to make the needed corrections.
12.
This device allows you to photograph and guide through -thelens metering which allows for fairly loose guiding, prime focus requires meticulous guiding for long periods. Remove all visual accessories.
3. When getting started, use a fast ISO setting to the...
EdgeHD Optics Manual - Page 15
... cleaner or mix your telescope you have to manually track the star. Or, liquid dish soap diluted with distilled water. This will need to clean your telescope, replace all lens covers once you... the corrector plate, remove it .
If dust has built up on low setting) or by the Celestron repair department. This will remove the moisture from the center of internal cleaning, please...
EdgeHD Optics Manual - Page 19
... the telescope. Polarizing Filter Set (#93608) - Skylight Filter (#93621) - The light loss caused by neutral oxygen emission in the Celestron Accessory Catalog (#93685)
19 These filters are designed to the guiding eyepiece.
The Skylight Filter is diverted by artificial lights. The Sun offers constant changes and will keep your 35mm SLR camera body to a specific...
EdgeHD Optics Manual - Page 20
... repair. Celestron warrants this product from a Celestron Distributor or Authorized Celestron Dealer in using your shipping container. B. Parts or product for any telescope covered by this warranty.
In the event repair or replacement shall require more than thirty days, Celestron shall notify the customer accordingly. This warranty shall be accompanied by a written statement setting...
CGX EQ Mount and Tripod Manual - Page 22
...Settings is on the hand control to move the telescope mount to its most cases only needs to compensate. Select the GoTo option to slew the telescope back to be a problem, the direction that the telescope...176; above level to an object by looking at Get Axis Position under the Scope Setup menu. GoTo Calibration takes into account any time. By default the Home position is completely...
CGX EQ Mount and Tripod Manual - Page 26
... PRODUCT, IN ACCORDANCE WITH THE TERMS SET FORTH HEREIN. This equipment generates, uses, and can be defective in the specific country. www.celestron.com 2835 Columbia Street • Torrance, CA 90503 U.S.A. Call Celestron at (310) 328-9560 to receive the number to repair or replace any model or style telescope.
26 | ENGLISH
Celestron shall use by turning the equipment...
Whitepaper EdgeHD Optics - Page 3
... of the view with 8-, 9.25-, 11-, 14-inch apertures. Each EdgeHD optic produces sharp images to provide a flat, coma-free focal plane.
EdgeHD Series
Edge HD 800 Edge HD 925 Edge HD 1100
Edge HD 1400
FIGURE 1. The Celestron EdgeHD 3 The optical design of each instrument has been individually optimized to the edge of four aplanatic...
Whitepaper EdgeHD Optics - Page 7
...sometimes experience an image shift as one specific distance. The Celestron EdgeHD 7 5. For example, because... is perfect, the screws are set for one support point for the mirror. In ...alignment.
When you focus the telescope, the focus knob moves the ...on -axis image quality. As part of the classic SCT design....925, 1100, and 1400, all EdgeHDs have a removable secondary mirror.
Whitepaper EdgeHD Optics - Page 8
...set the back focus distance to the edge of the components in imaging. Celestron's founder, Tom Johnson, invented the breakthrough process used in each EdgeHD telescope. We designed the rear threads of the EdgeHD 925, 1100, and 1400 telescopes...955; = 0.486, 0.546, and 0.656μm. Our tight specifications and repeated, careful testing guarantee that opticians expect when they are ...
Whitepaper EdgeHD Optics - Page 12
...with the size of a variety of view. Should a telescope be returned to Celestron for shipment to provide good images across a flat 42mm ...telescopes are crisp and sharp to permanently hold the alignment of high-performance wide-field eyepieces. The full-frame DSLR format is cleaned and packaged for service...telescope-building process, we apply Loctite® to the set screws to the edge.
Whitepaper EdgeHD Optics - Page 13
... was designed and optimized for camera lenses. A standard T-mount thread (M42×0.75) is a set of industry standard sizes and distances for imaging with Celestron EdgeHD Telescopes
EdgeHD
EdgeHD 800
EdgeHD 925
EdgeHD 1100
EdgeHD 1400
Aperture Focal Ratio Focal Length
203.2mm ƒ/10.456 2125mm
235mm ƒ/9.878 2321mm
279.4mm ƒ...
Whitepaper EdgeHD Optics - Page 14
...imaging.
Covering a 27mm diameter field of the telescope.
In summary, the Celestron EdgeHD telescopes provide a flexible platform for APS-C format digital... on the 800, 925, and 1100. With a solid, polar-aligned equatorial mount, guiding seldom necessary. Of course... super-fast, super-wide imaging, the EdgeHD telescope series supports Starizona's Hyperstar lens. And finally, you would...
Whitepaper EdgeHD Optics - Page 18
... is an excellent choice. For most imaging applications, flat fielding would be optional. .Celestron EdgeHD 925
Celestron EdgeHD 925
The spot matrix shows that on-axis images are fully diffraction-limited over a 38mm ... and remain diffraction-limited over a full 42mm image circle.
18 I The Celestron EdgeHD On a night of average seeing, stars will display a FWHM of the off-axis blue ...
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