Given the following data for sightings made on the sun: Latitude of the place of observation = N17⁰22' The temperature during observation = 23.89⁰C Elevation of place of observation = 1,682.317 m Meridian of the place of observation = 120⁰ East Date of observation = June 22,1977 The transit is set up at A and a mark is placed on B.Determine the following: a) Mean horizontal angle from mark to Sun b) Mean vertical angle to the sun c) Mean time at the place of observation d) GCT when the observation was made e) Sun's apparent declination on date and time of observation f) True altitude of the sun corrected for refraction and parallax g) The value of angle Z and the sun's true bearing h) True bearing of the line AB
Given the following data for sightings made on the sun: Latitude of the place of observation = N17⁰22' The temperature during observation = 23.89⁰C Elevation of place of observation = 1,682.317 m Meridian of the place of observation = 120⁰ East Date of observation = June 22,1977 The transit is set up at A and a mark is placed on B.Determine the following: a) Mean horizontal angle from mark to Sun b) Mean vertical angle to the sun c) Mean time at the place of observation d) GCT when the observation was made e) Sun's apparent declination on date and time of observation f) True altitude of the sun corrected for refraction and parallax g) The value of angle Z and the sun's true bearing h) True bearing of the line AB
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Given the following data for sightings made on the sun:
Latitude of the place of observation = N17⁰22'
The temperature during observation = 23.89⁰C
Elevation of place of observation = 1,682.317 m
Meridian of the place of observation = 120⁰ East
Date of observation = June 22,1977
The transit is set up at A and a mark is placed on B.Determine the following:
a) Mean horizontal angle from mark to Sun
b) Mean vertical angle to the sun
c) Mean time at the place of observation
d) GCT when the observation was made
e) Sun's apparent declination on date and time of observation
f) True altitude of the sun corrected for refraction and parallax
g) The value of angle Z and the sun's true bearing
h) True bearing of the line AB
Transcribed Image Text:Horizontal Angle
Telescope Position (clockwise from mark to
the sun)
Vertical Angle
Time
57°54.0'
58°12.5'
43°48.0'
43°25.8'
43°15.9'
Direct
9:20 AM
58°22.0'
59°06.8'
42°48.9'
Reversed
59°16.3'
42°35.2'
9:30 AM
59°38.2'
42°23.6'
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