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--- b:data_structure [2022/01/02 17:26]
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+++ b:data_structure [2022/02/26 16:54] (current)
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 ====== Data Structure ======
-A Timestamp is a date and time in fractions of a second, GMT.\\
+A **Reading** is one collection of three values from hardware within microseconds.\\
-The Angle is the angular rotation in degrees of the interferometer rotor.\\
+A **Timestamp** is a date and time in fractions of a second from Linux in GMT.\\
-A Quadrant is a quarter of a wavelength of light. It is a quarter of a fringe shift.
+The **Angle** is the angular current position in degrees of the interferometer rotor.\\
+A **Quadrant** is a cumulative sum of 1/4 wavelengths of light since program start. A quarter of a fringe shift.\\
+A **Chunk** is used to reduce the volume in bytes of the contained Readings.\\
+A **Turn** is a single, full rotation of the interferometer rotor.
-Reading contains Timestamp, Angle, Quadrants\\
+**Reading** contains Timestamp, Angle, Quadrants\\
-Chunk duration is 3 seconds, contains about 13 Readings.\\
+**Chunk** duration is 3 seconds, contains about 13 Readings.\\
-Turn duration is 1 minute, contains 20 Chunks, about 260 readings.\\
+**Turn** duration is 1 minute, contains 20 Chunks, about 260 readings.\\
-Hour duration is 1 hour, contains 60 turns, about 15,600 readings.\\
+**Hour** duration is 1 hour, contains 60 turns, about 15,600 readings.\\
 Number of hours collected (1/1/22) is 12,000, about 187,200,000 readings.
+Coordinates:
+/*
+see gSheet: "foMMX calc"
+angle magnitude  ... observatory
+...Miller henrici p226
+altitude azimuth ... horizontal
+ ... miller p225-226
+R Asencioin,decliination,houor angle ... equatorial
+ecliptic lattitude beta loongitude lambdp ... ecliptic
+ */

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