This compact and affordable 150mm (approx. . The mirror is coated with enhanced aluminum to at least 92% reflectivity and coated with a protective layer of SiO2 (quartz) for durability. Fast 6" f/4 Newtonian optics for wide-field imaging with DSLRs and a wide range of CCD and CMOS astronomy cameras, Fully and rigorously tested on site for cosmetics, mechanical operation, and optical performance by a master optician to ensure excellent overall telescope operation and customer satisfaction (an Agena exclusive service), Dual-speed 2" Crayford linear bearing focuser securely holds small to mid-sized cameras and accessories with minimal wear and flexure, Includes 2" 35mm-long extension tube and 2"-1.25" eyepiece adapter, 8" Vixen-style dovetail bar with dual split-hinged felt-lined mounting rings to protect tube finish, 8x50 straight-through achromatic finder mounted on quick-release bracket, Center dot on primary mirror for quick and easy collimation, Solid rolled steel telescope tube with gloss white exterior finish and matte black interior finish to increase contrast and minimize thermal effects. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions. The 6" Imaging Newtonian can be attached to a wide variety of equatorial mounts by either using the Vixen-sized dovetail that is included or adding your own Losmandy-style dovetail plate to the rings. Usually this 'optical pinching' can be resolved on a Newtonian scope by removing the primary mirror cell from the tube and loosening the mirror's mounting clips. Reviewed in the United States on August 22, 2017. For consistent results every night, an Orion-exclusive steel reinforcing plate underneath the focuser eliminates flexure, even with heavy cameras and other imaging gear attached. It includes a big 8x50 straight-through achromatic finder with non-illuminated crosshair. Please let us know. 1. 150mm f/4 Newtonian optical tube assembly, 2" Crayford-style linear bearing focuser with 1.25" eyepiece adapter, 8x50mm straight-through finder with bracket and base, No instruction manual is included at this time (coming soon), Primary mirror: Parabolic primary mirror; minimum 92% reflectivity; protective quartz layer, Secondary mirror: Xmm minor axis; minimum 92% reflectivity; protective quartz layer, Secondary mirror holder: 4-vane all metal spider, Tube outside diameter: End rings = 7.2"; tube = 7", Tube weight (with included accessories): 13lbs-7oz, Shipped size / weight = 26"x16"x10.5" / 16lbs-13oz, Inspected for collimation and focuser operation at Agena AstroProducts. Find answers in product info, Q&As, reviews. It is a very good astrograph telescope! This is a qualitative method to evaluate primary mirror smoothness and figure. Astromania Alignment 1.25" Next Generation Laser Collimator for Newtonian Telescopes - with This Laser You can collimate Your Newtonian Telescope in just a Few Minutes! Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. The tube has an attractive outside gloss white finish and a matte black interior finish to reduce stray reflection and increase image contrast. The GSO 150mm (approx. It's nice and sharp but documentation is not clear on what additional equipment is needed to attach a DSLR to it. Both primary and secondary mirrors boast enhanced reflectivity (94%) aluminum coatings with a protective silicon dioxide (quartz) overcoat. Contiguous US Customers:All items we sell ship for free within the Contiguous US. It does not weigh much, it is easy to load, with excellent components in its construction, very good focuser, very good finder. A substantial 63mm minor axis secondary mirror provides excellent field illumination to CCD and DSLR cameras for efficient astrophotography performance. With very fast f/4 optics and 94% reflectivity coatings, the Orion 6 inch Newtonian Astrograph will help you acquire outstanding high-resolution images of deep-sky objects with delightfully short exposure times so you can get great results in less time. Reviewed in the United States on August 22, 2020. What's more, this compact imaging specialist is conveniently lightweight at just 12.7 lbs., so it doesn't require a huge mount to support it.Its 6 inch parabolic primary mirror has 610mm of focal length, making the fast f/4 Newtonian an ideal wide-field astrophotography telescope. With a cropped-sensor DSLR camera or an astronomy camera such as the ZWO ASI071MC-Pro with an APS-C sensor, this scope gives a field of view across the diagonal of 2.6 degrees, more than enough to frame the brightest regions of extended deep-sky objects like the Andromeda Galaxy, Orion Nebula, and the Horsehead Nebula. Each GSO imaging Newtonian telescope at Agena undergoes a thorough physical, mechanical, and optical evaluation at our shop upon arrival - all at no extra cost to you. With a total weight of only 13lbs-7oz (9lbs-12oz with OTA and focuser only) this scope is ideal for use with compact and precision equatorial mounts such as the Celestron AVX, Skywatcher HEQ-5, or Orion Sirius. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. GSO telescopes are available from several suppliers, but Agena does much more than simply move the telescope boxes from GSO to you. The Apertura 6" OTA also has a quick-release finder adapter attached, and accepts the included 50mm finderscope bracket. Copyright © 2003-2020 Agena AstroProducts. The precisely figured 6" f/4 primary mirror is made from BK7 optical glass for enhanced thermal stability. The tops of the two rings each have two threaded M6x25mm holes that are 7.5" apart so you can install a separate dovetail to mount other accessories such as a guide scope. Each telescope should be ready to go out of the box when you receive it. A few large telescopes and mounts are excluded from this free shipping offer. Some customers resort to removing the felt lining and replacing it with a thinner alternative to allow the tube to rotate within the rings. With an astrograph telescope, you can easily look back at your favorite celestial objects and enjoy views of the sky anytime you want. The solid 10:1 dual-speed 2" Crayford-style dual-speed focuser handles small to mid-sized astronomy cameras and webcams. A review of three Astro-Tech astrographs (the AT6RC and AT8RC Ritchey-Chrétiens, as well as this AT8IN Imaging Newtonian) in the December 2009 issue of Sky & Telescope said "While all three of the Astro-Tech scopes represent excellent value, the AT8IN, with its 8-inch aperture and $499 price tag, wins the biggest-bang-for-the-buck award . Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. The tube is 7" in diameter (7.2" at the end rings), 21.75" long, and it extends beyond the focuser to act as a shield to prevent stray light from entering the tube and reducing image contrast. The short 600mm focal length keeps the tube length to a compact and easy-to-handle 21.75", making it straightforward to guide during extended exposures. Orion makes good products and this is one. This item cannot be shipped to your selected delivery location. . This instrument can also be used with 1.25" or 2" eyepieces for visual observations of solar system or deep sky objects. It also analyzes reviews to verify trustworthiness. It also has a tension knob to allow you to secure heavier loads. Portable, Light Weight, and Economical. Exactly as described. 6") f/4 imaging Newtonian offers a fast focal ratio that's ideal for capturing wide-field images of hundreds of celestial objects. Ronchi Test: We then perform a Ronchi grating test at the center of curvature at inside focus, at focus, and outside focus. 6") f/6 Newtonian optical tube assembly (OTA) from GSO has fast optics for wide-field views of the night sky. Gloss white finish and a locking knob to allow the tube rings feels cheaps, looks cheap perform! 8X50 straight-through achromatic finder with non-illuminated crosshair mounts are excluded from this free shipping offer needed to a... 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