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chara:fringe_offsets [2021/06/02 19:38] gail_stargazer |
chara:fringe_offsets [2021/06/02 19:39] gail_stargazer |
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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. | ||
- | Fringe offsets during 6T MIRCX observations in Mar-Apr 2021 (W2 as reference cart): The current fringe offsets change rapidly depending on hour angle. See plot of cart offset vs. hour angle. | + | Fringe offsets during 6T MIRCX observations in Mar-Apr 2021 (W2 as reference cart): The current fringe offsets change rapidly depending on hour angle. See [[: |
S1: -2.0 mm to +2.0 mm\\ | S1: -2.0 mm to +2.0 mm\\ |