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Our largest reflector optimized for astrophotography boasts 10" parabolic primary optics with a very fast f/3.9 focal ratio for exceptional wide-field, deep-space imaging performance. Even faint galaxies and nebulas exhibit stunning detail with limited exposure time when photographed through this large-aperture astrograph with a CCD imager or DSLR camera. You?ll get incredibly bright, crisp images that will make apo refractor aficionados green with envy - and you?ll have more green in your wallet thanks to this telescope?s more-affordable Newtonian design.
Both the 10" (254mm) primary and secondary mirror feature enhanced reflectivity (94%) aluminization for bright, contrast-rich images. The 82mm minor axis secondary mirror provides excellent full-field illumination with modern CCD imagers and DSLR cameras, with less than 8% light drop-off at the edge of APS-C sized sensors. The adjustable 4-vane secondary mirror holder features very thin, 1mm thick spider vanes to minimize diffraction effects in images. A center mark on the primary mirror and three easy-grip collimation knobs make optical alignment easy and precise.
Extended tube length of 7.5" in front of the focuser blocks intrusion of off-axis light, ensuring optimum image contrast. The sturdy 2" dual-speed (11:1), low-profile Crayford focuser permits ultra-fine focus and has 38mm of drawtube travel and a helpful drawtube lock knob. A steel reinforcing plate bolted inside the 38.6" long tube directly under the focuser helps eliminate flexure between it and tube, even with heavy imaging gear attached.
As with any fast Newtonian, an optional coma corrector is recommended to achieve flat-field imaging performance. Standard accessories include two cast aluminum tube rings, a 9x50 finder scope, 2" and 1.25" extension adapters, and a 12V DC fan for accelerated primary mirror cool-down (fan requires 12V power supply or 8 AA batteries, not included).
Not only does this affordable astrograph excel as an astrophotography instrument, but the 10" f/3.9 Newtonian can also be used as a formidable visual telescope. Its large 10" aperture and fast focal ratio will provide wondrous views of deep space objects, the planets and Moon, and sparkling star fields in both 2" and 1.25" telescope eyepieces.
Get the Orion 10" f/3.9 Newtonian Astrograph reflector telescope today and take your shot!
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.
Beginner Level - Suited for a wide range of uses, these products are simple to operate and set up. Some initial assembly may be required depending on the type of product. Optical instruments with this rating will have very good optical and mechanical quality. Great for families, young people, and folks who don't want to mess with equipment and complexity. Beginning level telescopes will show you countless lunar craters, Saturn's rings and a myriad of star clusters and nebulae! Referring to the manual is recommended.
Intermediate Level - These products offer higher performance and more advanced features than Level 1: Beginner models. They typically take a bit longer to learn and need some set-up or adjustments. But anyone with the slightest technical bent will have no problem getting familiar with these models. Referring to the manual is recommended.
Advanced Level - These products provide the best performance but may require more skill to master and appreciate. Optical instruments with this rating have exceptionally fine optics and mechanics. Some are easy to use but might be on the large or heavy side. Some are intended for specialized uses. These products will appeal to the more technically inclined. Referring to the manual is highly recommended.
For telescopes, the optical diameter (also known as aperture) is the size of a telescope's main light-collecting lens or primary mirror, measured in millimeters or inches. Telescopes with larger optical diameters collect more light, which leads to an increase in brightness and image resolution compared to smaller instruments.
For binoculars, the optical diameter (also known as objective lens diameter) is the size of each of the front-facing objective lenses of a binocular measured in millimeters. Binoculars with larger objective lenses collect more light, which increases image resolution and brightness. Binoculars with larger objective lenses are recommended for low light situations, and binoculars with at least 50mm or larger objective lenses are recommended for pleasing astronomical observations at night.
Orion 10" f/3.9 Newtonian Astrograph OTA 9x50 Finder scope and bracket 12V DC Cooling accelerator fan 2 Die-cast hinged tube rings 2" -to-1.25" Eyepiece adapter Collimation cap Dust caps Starry Night Special Edition astronomy software
Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.
A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.
Standard Delivery: $0.00Standard Delivery to Canada: $90.003 Day Delivery: $181.002 Day Delivery: $181.00Next Day Delivery: $216.00
SHIPPING RESTRICTIONS APPLY FOR THIS PRODUCT
This product is available to ship Standard delivery within the 50 US states and US territories/protectorates address. Delivery is not available to APO/DPO/FPO addresses . Delivery is available to Canada.
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