Publication Date:
2019-06-28
Description:
The Sacramento Peak Observatory Fast Microphotometer translates an optical system that includes a laser and photodiode detector across the film to scan the Y direction. A stepping motor moves the film gate in the X direction. This arrangement affords high positional accuracy, low noise (0.002 RMS density units), modest speed (5000 points/second), large dynamic range (4.5 density units), high stability (0.005 density units), and low scattered light. The Fast Microphotometer is interfaced to the host computer by a 6502 microprocessor.
Keywords:
INSTRUMENTATION AND PHOTOGRAPHY
Type:
NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 243-254
Format:
text
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