millenium telescope. initial meeting.. format part 1 - planning part 2 - sample designs part 3 -...
TRANSCRIPT
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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
Resolve location and usage issues
Agree design
Present detailed design/cost to Committee
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 Dome? Balcony? Downstairs? Elsewhere in school grounds
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Design Goals
Ease of construction
Ease of assembly/disassembly
Ease of storage and transportation
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 BerryObsession 20” F/5
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Obsession 20” F/5Completed scope
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Obsession 20” F/5 Unpacking truss tubes
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Obsession 20” F/5Opening mirror box
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Obsession 20” F/5Inserting mirror
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Obsession 20” F/5 Setting mirror down
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Obsession 20” F/5Install upper tube clamps
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Obsession 20” F/5Mirror cell assembly
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Obsession 20” F/5Truss tube clamps
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Obsession 20” F/5Securing mirror
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Dan Gray 16” F/3.75 String Telescope
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16” F/3.75 String TelescopeCompleted scope
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16” F/3.75 String TelescopeBase
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16” F/3.75 String TelescopeClose-up of bearings
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16” F/3.75 String TelescopeRocker
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16” F/3.75 String TelescopeSquare tube support
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16” F/3.75 String TelescopeString length adjustment
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16” F/3.75 String TelescopeCollimation adjustment point
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16” F/3.75 String TelescopeSecondary cage and spider
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16” F/3.75 String TelescopeCollimating
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16” F/3.75 String TelescopeDisassembled scope
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16” F/3.75 String TelescopeIn car!
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Greg Babcock 18” F/4.55
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18” F4.55Completed scope
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18” F4.55Gallery
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Greg Babcock 24” F/4 Ultra-light
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24” F/4 Ultra-LightCompleted and disassembled scope
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24” F/4 Ultra-LightAltitude bearing and stand
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24” F/4 Ultra-Light4” Mirror cell clearance for drive
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24” F/4 Ultra-LightTrusses
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24” F/4 Ultra-LightCage
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24” F/4 Ultra-LightCompleted scope
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24” F/4 Ultra-LightCompleted scope
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24” F/4 Ultra-LightIn car!
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Bruce Sayre 22” F4.05 Design
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22” F4.05 DesignCompleted scope
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22” F4.05 DesignBase
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22” F4.05 DesignCutaway of bottom frame and drives
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22” F4.05 DesignClose-up of bottom frame
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22” F4.05 DesignBottom portion of telescope
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22” F4.05 DesignSide view of rocker
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22” F4.05 DesignRocker
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22” F4.05 DesignMirror cell multipoint flotation assembly
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22” F4.05 DesignMirror cell with flotation assembly underneath
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22” F4.05 DesignDrive motor assembly
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22” F4.05 DesignStrut attachment
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22” F4.05 DesignTruss tube mounting
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22” F4.05 DesignView above completed scope
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22” F4.05 DesignSecondary cage and spider assembly with baffling
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22” F4.05 DesignSecondary cage side view
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Digital AstrophotographyC2020z - Planets with 20” Newtonian
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Part 3 - Discussion
Team for location/storage Obtain 45 gal drum Consolidate designs/plans
– Contact designers (email)– Monitor bigdob discussion group
Contact FAS/other AS for feedback Possible visit(s) to other AS Agree next meeting