1. Electronics and Controls
T.A. Sebring
13,14 July 2005
Feasibilty/Concept Study Mid Term Status Review

2. Scope Power Sources, Distribution and Protection Strategy
Lighting and Emergency Lights
Safety and Security Equipment
Communications Network
Control System Implementation
System Specific Equipment
Computer System Approach
Dome and Shutter Controls
Optical Systems Electronics
Prime Focus Camera Electronics
Coating Plant Controls

3. Status of Investigation
Little Work Done Specific to CCAT
Systems and Approaches Well Within State of the Art
Concept Design to be Taken Up in Next Phase of Work
Have Detailed Estimates as Required for Other Telescopes
HET: $250,000
SOAR: $664,940
DCT: $1,174,225 (Estimate)
CCAT: $3,000,000 (i.e. We Should Have Plenty Budgeted)
Examination of Required Systems Verifys Low Risk and High Feasibilty

4. We Will NeedElectric Power Budget
Total Raw Commercial Power
Raw Commercial Power
Total Automatic Transfer Switch Power
Automatic Transfer Switch Power
Uninterruptible Power Supply Power
Shared Loads
Observation Loads
Shut Down Loads

5. Electric Power Budget

6. Electric Power Budget

7. Electric Power Budget Peak Load Raw Power: 508kVA
Peak Maintenance Raw Power: 209kVA
Peak Standby Generator Power: 41kVA
Peak Automatic Transfer Switch Power: 80kVA
Peak Uninterruptible Power Supply Power: 10kVA

8. Electric Power Distribution
Power Distribution Needs to Fit Requirements
Electric Power
Distribution
500kVA Three Phase Transformer for Commercial Power
480/277Vac, 60Hz US Standard
60kVA Liquid Propane Standby Generator
20kVA UPS with Bypass Switch

9. Work with A & E to Define Lighting Reqts.
Work Lights Are High Efficiency Metal-Halide
Dome Lights Are Dimmable Halogen Reflectors and Shatter-Resistant Fluorescent with Low Temperature Instant Start Ballast
Emergency Lights Use Central Batteries and Light Fixtures Distributed Around the Building
Auxiliary Lights Are Incandescent, Halogen and Fluorescent Lights, Some Dimmable, Connected to Emergency Generator Power and Manually Controlled
For Energy Efficiency all Lights will Be Powered off 480V or 277V but Dimmable Lights in Control Room

10. Must Include Emergency Stop System
Defined as Normally Closed Double Loop Around the Facility and Mount
Any Switch Interrupts the Loop and Stops all Dome, Shutter and Telescope Motion
“Intelligence” always Remains Alive
Large Illuminated Mono-block Mushroom Switches to Confirm Action and Facilitate Identification
Electrical Panel in Control Room Shows E-stop Status
Integrated with Contractors’ and Third Party Subsystems

11. Telescope Surveillance System
Low Cost off-the-Shelf System
Based on 4 B&W High Sensitivity (0.1 Lux) Automatic Iris Video Cameras and Large Quad Monitor
Coverage Angle from 3.25° to 86° (50 Feet) Depends on Selected Lenses
Microphone and Two-way Intercom Incorporated on Each Camera
Pre-assembled Cables with Lengths up to 1000 Feet

12. Need to Resolve Approach to Data Transfer & Communications
16.4 Miles
18.2 Miles
Gigabit Ethernet
Transceiver
On Happy Jack
Gigabit Ethernet
Transceiver
On Mars Hill
Gigabit Ethernet Repeater on
Mormon Mountain Antenna Farm
RF Trans/Receive May Not be Appropriate for Radio Telescopes
Networking Equipment:
Router, Server, Switches
Networking Equipment:
Router, Server, Switches

13. Control System Implementation
Equipment Providers (Others):
Contractors and Subcontractors
Partners and Associated Third Parties
Equipment not Provided by Others will Be Provided or Built In-House by the CCAT Development and Integration Team:
Electric Power Backup System
Safety and Surveillance System
Communications and Networks
Webcams, Videoconference and PA
Time Stamping and Computer System
Computer and Control Room HVAC
Environment Control System
Dome Control System
Coating Plant Controls

14. Summary
We Do Not Have an Appropriate Person on Staff Now to Do Concept Design
We Have Allocated Sufficient Funding for Any Required Systems
We Understand the Full Scope of Required Systems
Required Systems do Not Represent Significant Technical or Cost Challenges
During Engineering Concept Design We Will Develop Concepts Specific to CCAT
During Engineering Concept Design We Will Develop Accurate Cost Estimates Based on Identified Equipment