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chara:fringe_offsets [2018/04/10 21:19] 127.0.0.1 external edit |
chara:fringe_offsets [2018/07/05 08:59] jones |
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+ | ====== Fringe Offsets ====== | ||
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 MIRC observations on 2018 Mar 29 (W2 as reference cart):\\ \\ W1: -0.3 mm to +1.4 mm\\ S2: +3.3 mm to +4.4 mm\\ S1: +1.4 mm to +2.1 mm\\ E1: +3.7 mm to +4.3 mm\\ E2: +3.3 mm to +4.2 mm\\ W2: Reference Cart\\ \\ NOTE: Theo installed a new baseline solution on 2018 Mar 22.\\ \\ Fringe offsets during 6T MIRC observations on 2017 Oct 26-27 (W2 as reference cart):\\ \\ W1: -4.0 mm to 2.7 mm\\ S2: -0.3 mm to +0.6 mm\\ S1: -2.0 mm to +0.4 mm\\ E1: -3.0 mm to +2.4 mm\\ E2: -2.0 mm to +1.5 mm\\ W2: Reference Cart\\ \\ NOTE: There might have been another baseline solution applied in August.\\ \\ Fringe offsets during 6T MIRC observations on 2017 July 9-10 (W2 as reference cart):\\ \\ W1: +5.6 mm\\ S2: +1.0 mm to +3.0 mm\\ S1: +0.8 mm to +3.1 mm\\ E1: +2.5 mm to +5.0 mm\\ E2: +1.0 mm to +3.1 mm\\ W2: Reference Cart\\ \\ Fringes offsets during CLIMB fringe searching on 2017 July 4 (W2 as reference): | 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 MIRC observations on 2018 Mar 29 (W2 as reference cart):\\ \\ W1: -0.3 mm to +1.4 mm\\ S2: +3.3 mm to +4.4 mm\\ S1: +1.4 mm to +2.1 mm\\ E1: +3.7 mm to +4.3 mm\\ E2: +3.3 mm to +4.2 mm\\ W2: Reference Cart\\ \\ NOTE: Theo installed a new baseline solution on 2018 Mar 22.\\ \\ Fringe offsets during 6T MIRC observations on 2017 Oct 26-27 (W2 as reference cart):\\ \\ W1: -4.0 mm to 2.7 mm\\ S2: -0.3 mm to +0.6 mm\\ S1: -2.0 mm to +0.4 mm\\ E1: -3.0 mm to +2.4 mm\\ E2: -2.0 mm to +1.5 mm\\ W2: Reference Cart\\ \\ NOTE: There might have been another baseline solution applied in August.\\ \\ Fringe offsets during 6T MIRC observations on 2017 July 9-10 (W2 as reference cart):\\ \\ W1: +5.6 mm\\ S2: +1.0 mm to +3.0 mm\\ S1: +0.8 mm to +3.1 mm\\ E1: +2.5 mm to +5.0 mm\\ E2: +1.0 mm to +3.1 mm\\ W2: Reference Cart\\ \\ Fringes offsets during CLIMB fringe searching on 2017 July 4 (W2 as reference): |