1. Canada France Hawaii Telescope
Intern: Kyle Mauri
Colorado State University
Mentor: Greg Green

2. Background Information
• Two Axes of Rotation
• Hour Angle (HA)
• Declination (Dec)
• Binding of the Current Pin Assembly
• Mirror Aluminizing
• Mirror Handling Cart Alignment

3. Mirror Cart
Rails
Mirror
Cell

4. The East Side tube

5. The Inner Hub assembly

6. Planning and Execution
• 1: Understand Drawings and Existing Hardware
• 2: Fully Define the problem and engineer a solution
• 3: Creating New Park Number to align handling cart and mirror
cell
• 4: Designing a viable solution
• 5: Machining and Fabrication
• 6: Assembly

7. 1: Understanding The Past
• Vellum Drawings
• Converting Drawings from the 1970’s
• Learning Technical French
• Solidworks Modeling
• Determining Mass Properties
• Understanding Clearance and maximizing available space
• Stress analysis

9. Current Hardware
Pin Guide
Block Pin Receiving
Block
Pin

10. Sensors
Air Cylinder
Mounting
Bracket

11. 2: The Objective(s)
• Realign the Telescope via Dec Pin assembly
• Stop the Dec. Pin from Binding in the Receiving Block
• Tighten Up tolerances
• Be able to Sense Remotely if Pin is Engaged or Not
• Convert to Digital Sensing Equipment
• Match Theoretical Models to Physical Hardware
• Make sure the theoretical is really there

12. Constraining Factors
• Time
• Installation Time Limited to one working day
• Design, Build/Fabricate, Assembly
• Materials
• Cost, Shipping Time, Availability all need to be considered
• Integration
• Must mount in existing hole patterns
• Needs to be able to use old sensing technology
• Ability
• If it can’t be bought what can we make and how long will it take

13. 3: The New Park Number
20:00:38.6 19:45:32.5

14. 4: The New Design

15. The New Hardware
• New Air Cylinder
• Increased bore size by 25%
• Magnetic sensor ready
• Flow control
• New Mounting Bracket
• More Robust
• Magnetic Reed Switches
• Custom Mounts
• Easy to Run Diagnostics
• New Pin
• Different Internal thread

16. 5: The New (Physical) Hardware

19. Modifications

21. 6: The Finished Product

23. Planning and Execution
1: Understand Drawings and Existing Hardware
2: Fully Define the problem and engineer a solution
3: Create New Park Number to align handling cart and mirror
cell
4: Design a viable solution
5: Machine and Fabricate
6: Assemble

24. • Canada France Hawaii Telescope
• Greg Green
• Mary Beth Laychak
• Nicole Tabac
• Akamai Workforce Initiative
• W.M. Keck Observatory
• Justin Pitts
• Cheyenne Maio-Silva
• Katelyn Chigami