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A Problem of Time and Telescopes

By: Tyler Yoshiyama

Home Institution: UH Hilo

Mentor: Ross Matoi

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Just the Wrong Time?

AEOS pointed at Jupiter last week.

Yesterday it failed to point at Jupiter.

Today it points at Jupiter again.

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The Current Hardware

GUI (OBJECT)

GPS (TIME)

IMAGE MOUNT CONTROL

(COMPUTES LOCATION OF OBJECTS)

TELESCOPE

(LOOKS AT OBJECTS)

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My Project

Design a system to input any time into the Image Mount Control (IMC)

Independent of the IMC

Doesn’t change code in IMC

Tricks telescope

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GPS

The Time Setting System

Linux PC

Timer Card

C Code

TCL/TK GUI

Networking Feature

IMC GUIIMC

TELESCOPE

MY SYSTEM

OTHER COMPUTERS

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The Coding Language

Tool Command Language

ToolKit

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Network

Uses User Datagram Packets (UDP) to send data

UDP is fast but doesn’t check for errors

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The Roadblocks

Had to learn to program in new environment

Had to learn TCL/TK

Driver didn’t compile initially Managed to debug problem by adding one line of

code

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Results

C program communicates with GUI and timer card

Time can be changed via GUI

Able to send and receive information from another computer

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Acknowledgements

Akamai Internship Scott Lynne Lani Everyone else in the

program

Textron Ross Matoi Don Ruffato Nathan Kimura Everyone at Textron

for being helpful and supportive

The Maui Akamai Internship Program is funded by the CfAO through NSF Science and Technology Center grant (#AST-987683) and by grants to the Akamai Workforce Initiative from the NSF & AFOSR (both administered by NSF, #AST-0710699) and from the University of Hawaii

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Thank You