Differences

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--- song_spectrograph_assembly [2025/05/28 19:20] – [SONG spectrograph assembly] 172.24.37.106
+++ song_spectrograph_assembly [2025/05/30 17:55] (current) – 172.59.0.80
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+====== Spectrograph assembly guide ======
 ===== Room requirements/setup =====
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       - rotate far diagonal to direct towards diagonal under collimator for all positions of far diagonal
       - adjust diagonal under collimator to get beam in collimator.
-{{ :spec:collimator.jpg?direct=300 }}
+{{ :spec:collimator.jpg?direct=400 }}
   * With aligned collimator install flat (grating flat, FM2, and FM3 on table in desired location. Also install prism mount for convenience before adding upper table. For each of the three flats:
@@ Line 73: / Line 74: @@
     * Focus autocollimator to get retroreflection reticle
     * adjust tip-tilt of flat to get alignment
-{{ :spec:flats.jpg?direct&300 }}
+{{ :spec:flats.jpg?direct&400 }}
   *  set up upper table on main optical bench in correct location. Install:
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       * laser should be in center of white beam on table; if not, something is not right!
       * put flat mirror on table at beam, look for reflected laser at laser source, adjust diagonal down-pointing mirror until laser reflection returns exactly to laser.
-{{ :spec:upper.jpg?direct=300 }}
+{{ :spec:upper.jpg?direct=400 }}
   * Install slit to ensure focal plane is at desired height above optical table
     * measure distance from bottom of slit holder to slit (10mm)
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 Photos of the fully assembled spectrograph at APO on May 7, 2025.
-{{:spec:spectrograph_may07_above.jpg?400|}}
+{{:spec:spectrograph_may07_above.jpg?300|}}
-{{:spec:spectrograph_may07_low.jpg?400|}}
+{{:spec:spectrograph_may07_low.jpg?300|}}