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Published byBryson Fugett Modified over 10 years ago
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Millenium Telescope. Initial Meeting.
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Format Part 1 - Planning Part 2 - Sample Designs Part 3 - Discussion/what happens next
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Objectives 4 Resolve location and usage issues 4 Agree design 4 Present detailed design/cost to Committee 4 Go/No Go?
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Aperture Fever…!
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Part 1 - Planning...
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Location/usage Most difficult part! Dedicated effort Some options 5 Dome ? Balcony ? Downstairs ? Elsewhere in school grounds
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Design Goals 4 Ease of construction 4 Ease of assembly/disassembly 4 Ease of storage and transportation 4 Ease of collimation (repeatable)
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Mirrors Primary Mirror (Pyrex): –Diameter, 482 mm –Edge thickness, 38 mm –Focal length, 2165 mm (F/4.5) –Calculated weight 15 Kg Secondary Mirror (elliptical plate glass): –Major axis, 150 mm –Minor axis, 106 mm –Thickness, 14.5 mm
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Part 2 - Sample Designs
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Kriege and Berry Obsession 20” F/5
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Obsession 20” F/5 Completed scope
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Obsession 20” F/5 Unpacking truss tubes
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Obsession 20” F/5 Opening mirror box
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Obsession 20” F/5 Inserting mirror
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Obsession 20” F/5 Setting mirror down
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Obsession 20” F/5 Install upper tube clamps
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Obsession 20” F/5 Mirror cell assembly
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Obsession 20” F/5 Truss tube clamps
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Obsession 20” F/5 Securing mirror
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Dan Gray 16” F/3.75 String Telescope
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16” F/3.75 String Telescope Completed scope
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16” F/3.75 String Telescope Base
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16” F/3.75 String Telescope Close-up of bearings
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16” F/3.75 String Telescope Rocker
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16” F/3.75 String Telescope Square tube support
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16” F/3.75 String Telescope String length adjustment
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16” F/3.75 String Telescope Collimation adjustment point
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16” F/3.75 String Telescope Secondary cage and spider
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16” F/3.75 String Telescope Collimating
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16” F/3.75 String Telescope Disassembled scope
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16” F/3.75 String Telescope In car!
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Greg Babcock 18” F/4.55
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18” F4.55 Completed scope
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18” F4.55 Gallery
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Greg Babcock 24” F/4 Ultra-light
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24” F/4 Ultra-Light Completed and disassembled scope
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24” F/4 Ultra-Light Altitude bearing and stand
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24” F/4 Ultra-Light 4” Mirror cell clearance for drive
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24” F/4 Ultra-Light Trusses
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24” F/4 Ultra-Light Cage
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24” F/4 Ultra-Light Completed scope
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24” F/4 Ultra-Light In car!
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Bruce Sayre 22” F4.05 Design
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22” F4.05 Design Completed scope
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22” F4.05 Design Base
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22” F4.05 Design Cutaway of bottom frame and drives
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22” F4.05 Design Close-up of bottom frame
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22” F4.05 Design Bottom portion of telescope
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22” F4.05 Design Side view of rocker
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22” F4.05 Design Rocker
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22” F4.05 Design Mirror cell multipoint flotation assembly
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22” F4.05 Design Mirror cell with flotation assembly underneath
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22” F4.05 Design Drive motor assembly
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22” F4.05 Design Strut attachment
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22” F4.05 Design Truss tube mounting
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22” F4.05 Design View above completed scope
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22” F4.05 Design Secondary cage and spider assembly with baffling
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22” F4.05 Design Secondary cage side view
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Digital Astrophotography C2020z - Planets with 20” Newtonian
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Part 3 - Discussion 4 Team for location/storage 4 Obtain 45 gal drum 4 Consolidate designs/plans –Contact designers (email) –Monitor bigdob discussion group 4 Contact FAS/other AS for feedback 4 Possible visit(s) to other AS 4 Agree next meeting
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