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Millenium Telescope. Initial Meeting.. Format Part 1 - Planning Part 2 - Sample Designs Part 3 - Discussion/what happens next.

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Presentation on theme: "Millenium Telescope. Initial Meeting.. Format Part 1 - Planning Part 2 - Sample Designs Part 3 - Discussion/what happens next."— Presentation transcript:

1 Millenium Telescope. Initial Meeting.

2 Format Part 1 - Planning Part 2 - Sample Designs Part 3 - Discussion/what happens next

3 Objectives 4 Resolve location and usage issues 4 Agree design 4 Present detailed design/cost to Committee 4 Go/No Go?

4 Aperture Fever…!

5 Part 1 - Planning...

6 Location/usage Most difficult part! Dedicated effort Some options 5 Dome ? Balcony ? Downstairs ? Elsewhere in school grounds

7 Design Goals 4 Ease of construction 4 Ease of assembly/disassembly 4 Ease of storage and transportation 4 Ease of collimation (repeatable)

8 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

9 Part 2 - Sample Designs

10 Kriege and Berry Obsession 20” F/5

11 Obsession 20” F/5 Completed scope

12 Obsession 20” F/5 Unpacking truss tubes

13 Obsession 20” F/5 Opening mirror box

14 Obsession 20” F/5 Inserting mirror

15 Obsession 20” F/5 Setting mirror down

16 Obsession 20” F/5 Install upper tube clamps

17 Obsession 20” F/5 Mirror cell assembly

18 Obsession 20” F/5 Truss tube clamps

19 Obsession 20” F/5 Securing mirror

20 Dan Gray 16” F/3.75 String Telescope

21 16” F/3.75 String Telescope Completed scope

22 16” F/3.75 String Telescope Base

23 16” F/3.75 String Telescope Close-up of bearings

24 16” F/3.75 String Telescope Rocker

25 16” F/3.75 String Telescope Square tube support

26 16” F/3.75 String Telescope String length adjustment

27 16” F/3.75 String Telescope Collimation adjustment point

28 16” F/3.75 String Telescope Secondary cage and spider

29 16” F/3.75 String Telescope Collimating

30 16” F/3.75 String Telescope Disassembled scope

31 16” F/3.75 String Telescope In car!

32 Greg Babcock 18” F/4.55

33 18” F4.55 Completed scope

34 18” F4.55 Gallery

35 Greg Babcock 24” F/4 Ultra-light

36 24” F/4 Ultra-Light Completed and disassembled scope

37 24” F/4 Ultra-Light Altitude bearing and stand

38 24” F/4 Ultra-Light 4” Mirror cell clearance for drive

39 24” F/4 Ultra-Light Trusses

40 24” F/4 Ultra-Light Cage

41 24” F/4 Ultra-Light Completed scope

42

43 24” F/4 Ultra-Light In car!

44 Bruce Sayre 22” F4.05 Design

45 22” F4.05 Design Completed scope

46 22” F4.05 Design Base

47 22” F4.05 Design Cutaway of bottom frame and drives

48 22” F4.05 Design Close-up of bottom frame

49 22” F4.05 Design Bottom portion of telescope

50 22” F4.05 Design Side view of rocker

51 22” F4.05 Design Rocker

52 22” F4.05 Design Mirror cell multipoint flotation assembly

53 22” F4.05 Design Mirror cell with flotation assembly underneath

54 22” F4.05 Design Drive motor assembly

55 22” F4.05 Design Strut attachment

56 22” F4.05 Design Truss tube mounting

57 22” F4.05 Design View above completed scope

58 22” F4.05 Design Secondary cage and spider assembly with baffling

59 22” F4.05 Design Secondary cage side view

60 Digital Astrophotography C2020z - Planets with 20” Newtonian

61 Part 3 - Discussion 4 Team for location/storage 4 Obtain 45 gal drum 4 Consolidate designs/plans –Contact designers ( ) –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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