NSSSC Harding University

Report
Anna Shafer
Edmond Wilson, Ph.D.
NATIONAL STUDENT SOLAR
SPECTROGRAPH COMPETITION
• Design & Build
• Analyze
• Outreach
• Compete
NSSSC 2014 TEAM
Tamara
Reed
Brennan
Thomason
Anna
Shafer
Stephanie
Inabnet
SPECTROMETER DESIGN
SPECTROMETER CONTROL
WAVELENGTH SELECTION
• Grating position
• Turntable mount
• Precision
STEPPER MOTOR
STP-MTR-17040
• Controls grating position
• Precision to 1.8°
o Direction selection
o Pulse input
STP-DRV-4035
PROCESSING
COMMUNICATION
• Timing signals
o Synchronization: ROG
SONY ILX511
o Data Clock: CLK
• 2087 bytes per spectra
Arduino UNO
COMMUNICATION TIMING
• Chart for the timing
COMMUNICATION TIMING
SPECTRA CAPTURES
ANALOG CAPTURE
Default Reference
• Sampling Accuracy
Voltage (mV)
o Speed: 20 µsec
150
o Reference voltage
100
50
0
0
0.2
0.4
0.6
0.8
1
Time (sec)
Internal Analog Reference
Voltage (mV)
150
100
50
0
0
0.2
0.4
0.6
Time (sec)
0.8
1
FILTER AND STORE
• Noise removal
o Multiple readings – 3 to 5
o Average data points
• SD card
o 9600 baud serial
o .csv format
QUESTIONS?

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