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8-inch F5 Newtonian Astrograph
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8-inch F5 Newtonian Astrograph
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Submitted By:
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imhotep
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Date Created:
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10-03-2008
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Description:
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Overview:
This project involves the design and construction of a specialized kind of telescope. Simply put, an astrograph is a telescope that is designed specifically for the purpose of astrophotography. There are numerous examples of amatuer-made astrographs in addition to several branded models sold by various manufacturers. My humble attempt to build an astrograph is by no means a unique endeavor nor is my design completely original. I am relying heavily upon the knowledge and experience of other ATMs as well as various digital and physical tools to design and build this telescope. I am including my own unique twists on the materials and appearance of the final product.
Design:
For various reasons I have chosen to build a classic newtonian with an aperture of 8 inches. The primary mirror will be a Royce conical parabaloid at F/5 yielding a focal length of 1000mm. Arguably the greatest limiting factor upon my chosen focal length is the tracking capabilities of my mount. An aperture of 10 inches at F/5 was very tempting but I worried over the bulk of the resulting OTA, not to mention the burden on my mount. I am already concerned about wind being an issue with the 43-inch-long tube that my plans call for.
Application:
Upon completion this instrument will serve as the main imaging scope of my astrophotography platform. For those who are interested and/or savvy about related astronomy equipment, this astrograph will be mounted to a hypertuned Atlas EQ-G with EQMOD and CDC at the helm. A QHY8 CCD camera will be used to image with the astrograph. I autoguide uisng a DSI Pro and PHD Guiding v.1.9. My guidescope is currently a tandem ATM project to the astrograph and should be completed around the same time.
Thanks for checking out my project!
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Displaying 19 - 27 of 54
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Making the Mirror Cell
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Mirror ordered on October 22, 2008
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Test assembly using 10
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Moonlight CR Newtonian Focuser
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Cercis Controller
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Drilling Cradle
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Focuser Installation (sonotube)
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Focuser Installation (sonotube)
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Focuser Installation (sonotube)
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Displaying 19 - 27 of 54
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All projects on Shareaproject.com are user-submitted and should be used for reference information only. The projects are not intended to be complete "How-To" articles. Use the information contained in these projects at your own risk. Projects are not checked for completion, accuracy, or safety and therefore cannot be guaranteed in any way.
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