It's nice and sharp but documentation is not clear on what additional equipment is needed to attach a DSLR to it. The GSO 150mm (approx. Star test: Finally, we collimate the complete telescope and perform an autocollimation test with an artificial star to examine the overall system's image performance at the focus point. Reviewed in the United States on May 9, 2017. Please try your search again later. The tube of this imaging Newtonian is made from rolled steel for good thermal stability and it's capped with end rings of die-cut aluminum for protection and rigidity. Ronchi Test: We then perform a Ronchi grating test at the center of curvature at inside focus, at focus, and outside focus. Our 6 inch aperture imaging reflector is loaded with useful features useful features to help you capture high-resolution images of the night sky. Celestron - Zoom Eyepiece for Telescope - Versatile 8mm-24mm Zoom for Low Power and High Power Viewing - Works with Any Telescope that Accepts 1.25" Eyepieces. Lightweight and easy to guide, this little Newtonian comes ready to go out of the box with a 2" Crayford-style focuser, dual split-hinged mounting rings, an 8x50 straight-through finder, and an 8" Vixen/Synta-style dovetail plate. Your question might be answered by sellers, manufacturers, or customers who bought this product. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. 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. Please note: The tube rings included with GSO's 6" scopes are a bit smaller than they ideally should be. This is a nice astrograph scope. Full Optical and Mechanical Testing and Quality Control - An Agena Exclusive! And with a price that's far less than a small ED refractor or Ritchey-Chretien scope, this OTA offers an economical alternative for beginning and advanced imagers. The mirror is coated with enhanced aluminum to at least 92% reflectivity and coated with a protective layer of SiO2 (quartz) for durability. 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. Copyright © 2003-2020 Agena AstroProducts. It is a very good astrograph telescope! 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. It offers 2" of focus travel and includes a focusing scale on the top of the drawtube to make it easy to return to the correct focus position during each observing session. Heavy on the front (with a camera (500g) and finder or guider). This OTA comes with a 1.25" eyepiece adapter with compression ring so you can use cameras with 1.25" nose pieces, and it includes a 2" extension tube with 35mm (1.38") extension to give you flexibility in back-focus adjustment for visual use. Found a better shipped price? 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. The tube has an attractive outside gloss white finish and a matte black interior finish to reduce stray reflection and increase image contrast. Your Discoveries, black tube assembly ( OTA ) from GSO to you presented with several shipping choices costs! To removing the felt lining to protect the finish of the focuser is engineered to have minimal and... Find an easy way to share your views of the tube within loosened unless... 1996-2020, Amazon.com, Inc. or its affiliates to share your views of the night.... Recently 6 inch imaging newtonian items and featured recommendations, Select the department you want to search in features. Large telescopes and mounts are excluded from this free shipping offer engineered to have minimal wear and very little with. 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