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--- chara:coude_alignment_procedure [2024/05/07 18:54]
charaobs [Coude Alignment Procedure]
+++ chara:coude_alignment_procedure [2024/05/07 19:53] (current)
charaobs [Udated 2024 May 6]
@@ Line 1: / Line 1: @@
 ===== Coude Alignment Procedure =====
-Udated 2024 May 6
+==== Updated 2024 May 6 ====
 <font 12pt/Aptos,sans-serif;;black;;white>Coude alignments help keep the blue beacon from drifting during slews. Needed when drift is excessive and makes realigning difficult when on sky.</font>
-<font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Coude alignments help keep the blue beacon from drifting during slews. Needed when drift is excessive and makes realigning difficult when on sky.</font>/Times New Roman;;inherit;;inherit>1.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Start with an M10 alignment before beginning the coude process.</font>/Times New Roman;;inherit;;inherit>a.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Usually done on pop 5</font>/Times New Roman;;inherit;;inherit>2.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Send M7’s to default</font>/Times New Roman;;inherit;;inherit>3.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Do regular beginning of the night alignment procedure.</font>/Times New Roman;;inherit;;inherit>a.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Align beacon, dichroic, focus labao, focus wfs</font>/Times New Roman;;inherit;;inherit>4.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Open an engineering hut gui</font>/Times New Roman;;inherit;;inherit>a.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Ex. hutgtk -E S1 &</font>/Times New Roman;;inherit;;inherit>b.</font>  i. ii. iii. iv. <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Values should match last entry on excel</font>/Times New Roman;;inherit;;inherit>5.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Turn powers on and enable scope(s)</font>/Times New Roman;;inherit;;inherit>6.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Dome gui, Auto tab</font>/Times New Roman;;inherit;;inherit>a.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>On Az Pos enter stow position + 180</font>/Times New Roman;;inherit;;inherit>b.</font>  **<font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>[Set Pos]</font></b><font inherit/Calibri,sans-serif;;blackfont-family:Calibri,sans-serif;;;inherit></font>/Times New Roman;;inherit;;inherit>7.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Watch beacon spots and use M7 to keep them centered while it rotates 180 degrees.</font>/Times New Roman;;inherit;;inherit>8.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Obsgtk, align M7 when it stops moving</font>/Times New Roman;;inherit;;inherit>9.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Hut gui, enter new M7_1 and  M_2 values in excel.</font>/Times New Roman;;inherit;;inherit>a.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Ignore last 3 digits, record first 4</font>/Times New Roman;;inherit;;inherit>b.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Spreadsheet will calculate the average value</font>/Times New Roman;;inherit;;inherit>c.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Enter the average value + 3 zeros for M7_1 and hit <b>[GOTO]</b>. Do the same for M7_2.</font>/Times New Roman;;inherit;;inherit>d.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>If its a large move watch the beacon spots as they move away because you will need to recenter them</font>/Times New Roman;;inherit;;inherit>10.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Use the dichroic to realign the beacon to labao</font>/Arial,Helvetica,sans-serif;;inherit;;inherit>11. Dome gui,</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>hit <b>[STOW]</b> to return to stow positon</font>/Times New Roman;;inherit;;inherit>12.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>The beacon movement should be much smaller returning to stow than it was going away from stow</font>/Times New Roman;;inherit;;inherit>13.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Align M7</font>/Times New Roman;;inherit;;inherit>14.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Enter new actuator positions into excel</font>/Times New Roman;;inherit;;inherit>15.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Hut gui, send both actuators to the new calculated position</font>/Times New Roman;;inherit;;inherit>16.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Align dichroic</font>/Times New Roman;;inherit;;inherit>17.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>If the beacon movements were small on the way back to stow, then the coude alignment is finished. If it wasn’t, repeat until it is.</font>/Times New Roman;;inherit;;inherit>18.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>Hut gui, save the new M7 dichroic positions by hitting the<b> [DICHR POS]</b> then<b> [WRITE CFG] </b></font>/Times New Roman;;inherit;;inherit>a.</font>  <font inherit/Calibri,sans-serifblackfont-family:Calibri,sans-serif;;;inherit>It will save them to /ctrscrut/chara/etc/S2_aob.cfg</font>/Times New Roman;;inherit;;inherit>19.</font>  <font inherit/Calibri,sans-serif;;blackfont-family:Calibri,sans-serif;;;inherit>Can enter any notes on why coude alignment was needed on excel sheet.</font> **
+  - Start with an M10 alignment before beginning the coude process (usually done on POP 5)
+  - Send M7's to default
+  - Do regular beginning of the night alignment procedure
+      - align beacon, dichroic, focus labao, focus wfs
+  - Open an engineering hut GUI: >> hutgtk -E S1 &
+      - AOB ENG tab
+      - note the M7_1 and M7_2 actuator positions and enter them on the Excel page.
+        - Select and hit **[GET].**
+        - Value reads below get and should match last entry on excel
+  - Turn powers on and enable scope(s)
+  - Dome GUI, Auto tab:
+      - On 'Az Pos', enter the stow position + 180
+      - **[Set Pos]**
+  - Watch beacon spots and use M7 to keep them centered while it rotates 180°.
+  - Obsgtk, align M7 when it stops moving.
+  - Hut GUI, note new M7_1 and M_2 values and enter in excel.
+      - ignore last 3 digits and record first 4
+      - spreadsheet will calculate the average value
+      - enter the average value + 3 zeros for each actuator (M7_1 and M7_2).
+      - If its a large move, watch the beacon spots as they move away because you will need to recenter them
+  - Use the dichroic to realign the beacon to labao
+  - Hit **[STOW]**  to return to stow position
+  - The beacon movement should be much smaller returning to stow than it was going away from stow
+  - Align M7
+  - Enter new actuator positions into excel
+  - Hut GUI, send both actuators to calculated position.
+  - Align dichroic
+  - if the beacon movements were small on the way back to stow, then the coude alignment is finished. If it wasn't, repeat until it is.
+  - Hut GUI, save the new M7 dichroic positions by hitting **[DICHR POS] **then **[WRITE CFG]**
+      - it will save them to /ctrscrut/chara/etc/S1_aob.cfg
+  - Can enter any notes on why coude alignment was needed on excel sheet.
-==== Preparation ====
+==== Updated 2021Jun01 by Judit: ====
+=== Preparation ===
+Make sure the vacuum is below 5 torr in the pipe.
-  * Make sure the vacuum is below 5 torr in the pipe.
   * Proceed with the usual steps up to LAB DICH alignment with labao.
   * Adjust by hand DM tilt to front side of front rail target

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