Details
Sky-Watcher Quantum top of the line ED-APO refractors offer premium optical performance for the discriminating amateur astronomer and imagers. Refractors are coveted for their high-definition, superb for optimal detail of planets and binary stars while delivering the contrast needed to see faint nebulosity against a coal-black sky background. Quantum refractors utilize the most modern optical glasses and fabricating techniques to deliver the ultimate in high-fidelity astronomical imaging. Each lens element is individually inspected for purity and absence of striations and other image-degrading imperfections. Every lens is pitched polished to exacting standards of optical fabrication and performance by highly skilled opticians and tested on an optical laser bench to rigidly controlled optical standards. The result is high-quality, diffraction-limited optics performing to the theoretical limits of their respective aperture sizes.
- APO Quality - Quantum refractors are designed to assure virtual elimination of residual chromatic aberration ("false color") normally present in 2-element achromatic lens designs. Using the finest extra-low dispersion (ED) glass available, S-FPL53, and Schott glass for the other two lens elements, the Quantum triplet design delivers crisp, high-fidelity views of planetary, lunar and even deep-space celestial objects. All air-to-glass lens surfaces are multi-coated for high light transmission.
- F/7.0 Focal Ratio - excellent for visual and imaging use.
- Field Flattener - When you are ready for imaging, Quantum includes a field flattening lens that transforms your scope into the Ultimate Imaging Instrument. Using optical grade Schott glass and mutli-coatings on all air-to-glass lens surfaces, the field flattener provides sharps, in-focus stars across a large 43 mm image circle. The field flattener is compatible with optional M48 camera adapter rings.
- Precision Linear Bearing Focuser - Optical focus is achieved by means of a mechanically ultra-smooth, backlash-free, precision linear bearing focuser with giant 3.4" diameter drawtube. This rotatable focuser offers 2-speed fine and micro-fine focusing adjustments with an engraved scale. Includes 2" eyepiece adapter.
- Carbon Fiber Optical Tube - Dent and scratch-resistant carbon fiber optical tube not only provides a stylish protective finish but also delivers excellent thermal stability and mechanical stiffness.
- EQ Mount Ready - All-metal tube rings and a CGE-style dovetail plate makes Quantum refractors ready to be mounted on any of Celestron's high quality imaging platforms, like the CGEM Deluxe or CGE Pro equatorial mounts.
- Retractable Carbon Fiber Lens Shade - For compact and safe storage.
- Four Internal Baffles - Maximizes contrast and minimizes stray light and reflections.
- Aluminum Case - Offers protection for your instrument and all of its accessories.
Includes full accessory assortment:
- 28 mm eyepiece w/ 2" barrel diameter, fully multi-coated optics
- 2" dielectric mirror star diagonal w/ 1.25" adapter
- 9x50 correct-image right-angle finderscope with machined dovetail bracket
- Aluminum dust cover
Additional Information
| Optical Design | Refractor |
|---|---|
| Field Flattener | Included, thread-on |
| Aperture (mm) | 120 mm (4.72 in) |
| Focal Length (mm) | 840 mm (33 in) |
| Focal Ratio | 7 |
| Eyepiece 1 (mm) | 28 mm (1.1 in) |
| Magnification 1 | 30 x |
| Finderscope | 9x50, erect-image, right-angle |
| Star Diagonal | 2", dielectric coatings |
| Tube Ring | With 3" (CGE Style) dovetail plate |
| Highest Useful Magnification | 283 x |
| Lowest Useful Magnification | 17 x |
| Limiting Stellar Magnitude | 12.9 |
| Resolution (Rayleigh) | 1.16 arc seconds |
| Resolution (Dawes) | 0.97 arc seconds |
| Light Gathering Power (Compared to human eye) | 294 x |
| Optical Coatings | Fully multi-coated |
| Optical Tube Length | 30 in (762 mm) |
| Weight (lbs) | 23 lbs (10 kg) |
| Fully Illuminated Field | 43 mm (1.69 in) |
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Sky-Watcher Quantum Series Manual 
CELESTRON TWO YEAR LIMITED WARRANTY
A. Celestron warrants your 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. The Proper Return Authorization Number must be obtained from Celestron in advance of return. Call Celestron at (310) 328-9560 to receive the number to be displayed on the outside of your shipping container.
All returns must be accompanied by a written statement setting forth the name, address, and daytime telephone number of the owner, together with a brief description of any claimed defects. Parts or product for which replacement is made shall become the property of Celestron.
The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of Celestron, and shall be required to prepay such costs.
Celestron shall use reasonable efforts to repair or replace any telescope covered by this warranty within thirty days of receipt. In the event repair or replacement shall require more than thirty days, Celestron shall notify the customer accordingly. Celestron reserves the right to replace any product which has been discontinued from its product line with a new product of comparable value and function.
This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function, or subjected to abuse, misuse, mishandling or unauthorized repair. Further, product malfunction or deterioration due to normal wear is not covered by this warranty.
CELESTRON DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HEREIN. THE SOLE OBLIGATION OF CELESTRON UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS SET FORTH HEREIN. CELESTRON EXPRESSLY DISCLAIMS ANY LOST PROFITS, GENERAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE OR INABILITY TO USE ANY CELESTRON PRODUCT. ANY WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE DISCLAIMED SHALL BE LIMITED IN DURATION TO A TERM OF TWO YEARS FROM THE DATE OF ORIGINAL RETAIL PURCHASE.
Some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied warranty lasts, so the above limitations and exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Celestron reserves the right to modify or discontinue, without prior notice to you, any model or style telescope.
If warranty problems arise, or if you need assistance in using your telescope contact:
Celestron
Customer Service Department
2835 Columbia Street
Torrance, CA 90503
Tel. (310) 328-9560
Fax. (310) 212-5835
Monday-Friday 8AM-4PM PST
NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an authorized Celestron dealer in the U.S.A. or Canada. Warranty outside the U.S.A. and Canada is valid only to customers who purchased from a Celestron's International Distributor or Authorized Celestron Dealer in the specific country. Please contact them for any warranty service.
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