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chara:fringe_offsets [2025/05/20 20:17]
gail_stargazer 		chara:fringe_offsets [2025/05/20 20:20] (current)
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 The fringe offsets on any given night will depend on the POP configuration and the daily alignment. The table below gives a range of values where the fringes have been found for each cart on multiple nights across different POP configurations. The ranges should at least provide a guide for how far one might need to look to find fringes. The relative offsets between any pair of telescopes can be calculated from the differences between the ranges. The fringe offsets on any given night will depend on the POP configuration and the daily alignment. The table below gives a range of values where the fringes have been found for each cart on multiple nights across different POP configurations. The ranges should at least provide a guide for how far one might need to look to find fringes. The relative offsets between any pair of telescopes can be calculated from the differences between the ranges.
  
-A new baseline solution was created on 2025May07 and has been set as the default on UT 2025May08. The solution is based on mircx/mystic observations from UT 2025Feb18 through 2025May07. It was created using Aaron's python baseline solution code (beams fixed; XYZ, light, and pops optimized). We used a limited date range in attempt to keep the offsets closer to zero. The following link shows the [[:chara:files:figure_optimal_2025may07.png|sky coverage]] . https://chara.gsu.edu/wiki/lib/exe/fetch.php?media=chara:files:figure_optimal_2025may07.png+A new baseline solution was created on 2025May07 and has been set as the default on UT 2025May08. The solution is based on mircx/mystic observations from UT 2025Feb18 through 2025May07. It was created using Aaron's python baseline solution code (beams fixed; XYZ, light, and pops optimized). We used a limited date range in attempt to keep the offsets closer to zero. The following link shows the {{:chara:files:figure_optimal_2025may07.png?linkonly|sky coverage}} .
  
-S1: -0.51 mm to +0.62 mm\\ +S1: 0.00 mm to +2.85 mm\\ 
-S2: -0.78 mm to +0.12 mm\\ +S2: -0.45 mm to +1.94 mm\\ 
-E1: -0.51 mm to +1.34 mm\\ +E1: -2.36 mm to +2.47 mm\\ 
-E2: -1.62 mm to -0.26 mm\\ +E2: -0.51 mm to -2.96 mm\\ 
-W1: -0.17 mm to +1.03 mm\\+W1: -1.04 mm to +3.50 mm\\
 W2: Reference Cart W2: Reference Cart
  
chara/fringe_offsets.1747786629.txt.gz · Last modified: 2025/05/20 20:17 by gail_stargazer

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