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--- chara:helpful_tips_for_mirc-x:mystic_observing [2024/03/29 20:47]
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+++ chara:helpful_tips_for_mirc-x:mystic_observing [2024/03/29 20:54] (current)
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@@ Line 19: / Line 19: @@
 <font inherit/inherit;;inherit;;transparent>**Tip 5: Avoid mapping only one or two beams when several others have dropping fluxes.**</font>
-<font inherit/inherit;;inherit;;transparent>If you are not recording or actively searching for fringes, consider mapping all beams to get the peak flux on all beams rather than doing them one at a time. If you are recording data and flux begins to drop, consider doing small 3x3 maps (NSTEP=3) with step size of 3 um and “Goto bary X” to move to barycenter of light (page 35).</font>
+<font inherit/inherit;;inherit;;transparent>If you are not recording or actively searching for fringes, consider mapping all beams to get the peak flux on all beams rather than doing them one at a time. If you are recording data and flux begins to drop, consider doing small 3×3 maps (NSTEP=3) with step size of 3 um and “Goto bary X” to move to barycenter of light (page 35).</font>
 <font inherit/inherit;;inherit;;transparent>**Tip 6: Center the fluxes in the fiber map when all are present, even when some do not have a Gaussian fit.**</font>
@@ Line 25: / Line 25: @@
 <font inherit/inherit;;inherit;;transparent>A Gaussian fit is not needed to center the flux. If the starlight is clearly present, use Goto max + and then map smaller to get it well centered. Doing a larger map to try to get a Gaussian fit on all beams will take extra time in this situation. Page 24.</font>
-<font inherit/inherit;;inherit;;transparent>**Fringe searching and locking  **</font>
+<font inherit/inherit;;inherit;;transparent>**Fringe searching and locking **</font>
 <font inherit/inherit;;inherit;;transparent>**Tip 7: Lock or center fringes as soon as stars are locked or fiber maps are done.**</font>
@@ Line 39: / Line 39: @@
 <font inherit/inherit;;inherit;;transparent>Unless the baseline solution is old, the offsets will be near zero. If you did not find fringes +/- 1 to 2 mm from zero, make sure your fluxes are good and that there are no other issues before looping far away from zero. Page 29.</font>
-<font inherit/inherit;;inherit;;transparent>**Tip 10: Do not loop carts away from known offsets.**</font>
+<font inherit/inherit;;inherit;;transparent>**Tip 10: Do not loop carts far away from known offsets.**</font>
 <font inherit/inherit;;inherit;;transparent>If you were already locked on fringes and they have gone away, they are likely very close by. Looping away from the offset by hundreds of microns will not usually find the fringes. Check your fluxes first and then cart tracking (cart rms error) before deciding the fringe offset is far away from where it was recently. Manually stepping the cart up or down 20 microns often finds lost fringes. Page 30.</font>
@@ Line 63: / Line 63: @@
 <font inherit/inherit;;inherit;;transparent>If the combiners are cophased, either one can guide you to the fringes. Have RTD's open for both, so you can have all fringe information available to get you to the right cart offsets. Use whichever fringe is stronger to get the cart to the right offset on the Primary combiner. High spectral resolution on the secondary combiner can make fringe searching very easy. Make sure combiners are cophased and saved when doing STS so that the fringe finding is easier and more intuitive. Page 31 and 32.</font>
-<font inherit/inherit;;inherit;;transparent>**Tip 16: Use the 0 button to loop carts in a new search area.  **</font>
+<font inherit/inherit;;inherit;;transparent>**Tip 16: Use the 0 button to loop carts in a new search area. **</font>
 <font inherit/inherit;;inherit;;transparent>If you have not found fringes after looping away from zero for a while, you can return to zero and go the other direction. There is no need to loop back through an area unless you know the fringe should be there.</font>
@@ Line 69: / Line 69: @@
 <font inherit/inherit;;inherit;;transparent>**Tip 17: Do not lock fringes when they are on the edge of the PS Trend window.**</font>
-<font inherit/inherit;;inherit;;transparent>If fringes are on the edge of the PS Trend window, the fringe tracking servo can get confused and push the fringe away rather than centering it. If the fringe is on the edge, then click the</font><font inherit/inherit;;inherit;;inherit>**<**</font> <font inherit/inherit;;inherit;;inherit>or</font> <font inherit/inherit;;inherit;;inherit>**>**</font> <font inherit/inherit;;inherit;;inherit>buttons a few times in the same direction as the cart had been looping. Keep clicking until the fringe moves closer to the center (the fringe should get stronger if you are moving in the right direction; it will get fainter and disappear if moving in the wrong direction). Sometimes the fringe will need to go out the top/bottom of the PS Trend plot and back in the other side before you can lock on the real fringe. After the fringe is safely off the edge, then click to lock the fringe.</font>
+<font inherit/inherit;;inherit;;transparent>If fringes are on the edge of the PS Trend window, the fringe tracking servo can get confused and push the fringe away rather than centering it. If the fringe is on the edge, then click the</font>**<** or **>** buttons a few times in the same direction as the cart had been looping. Keep clicking until the fringe moves closer to the center (the fringe should get stronger if you are moving in the right direction; it will get fainter and disappear if moving in the wrong direction). Sometimes the fringe will need to go out the top/bottom of the PS Trend plot and back in the other side before you can lock on the real fringe. After the fringe is safely off the edge, then click to lock the fringe.
-<font inherit/inherit;;inherit;;transparent></font>

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