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chara:coude_alignment_procedure

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chara:coude_alignment_procedure [2024/05/07 18:56]
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 ===== ===== 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 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 12pt/Aptos,sans-serif;;black;;white>Start with an M10 alignment before beginning the coude process.</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.
  
-  - <font 12pt/Aptos,sans-serif;;black;;white>Usually done on pop 5</font> 
  
-  - <font 12pt/Aptos,sans-serif;;black;;white>Send M7’s to default</font>+==== Updated 2021Jun01 by Judit: ====
  
-  - <font 12pt/Aptos,sans-serif;;black;;white>Do regular beginning of the night alignment procedure.</font>+=== Preparation ===
  
-  - <font 12pt/Aptos,sans-serif;;black;;white>Align beacon, dichroic, focus labao, focus wfs</font>+Make sure the vacuum is below 5 torr in the pipe.
  
-  - <font 12pt/Aptos,sans-serif;;black;;white>Open an engineering hut gui</font> 
- 
-  - <font 12pt/Aptos,sans-serif;;black;;white>Ex. hutgtk -E S1 &</font> 
- 
-  - <font 12pt/Aptos,sans-serif;;black;;white>AOB ENG tab</font> 
- 
-  - <font 12pt/Aptos,sans-serif;;black;;white>Note M7_1 and M7_2 positions and enter on excel page</font> 
- 
-  - <font 12pt/Aptos,sans-serif;;black;;white>Select and hit **[GET]**</font> 
- 
-  - <font 12pt/Aptos,sans-serif;;black;;white>Value reads below Get.</font> 
- 
-  - <font 12pt/Aptos,sans-serif;;black;;white>Values should match last entry on excel</font> 
- 
- 
-==== Preparation ==== 
- 
-  * Make sure the vacuum is below 5 torr in the pipe. 
   * Proceed with the usual steps up to LAB DICH alignment with labao.   * Proceed with the usual steps up to LAB DICH alignment with labao.
   * Adjust by hand DM tilt to front side of front rail target   * Adjust by hand DM tilt to front side of front rail target
chara/coude_alignment_procedure.1715122575.txt.gz · Last modified: 2024/05/07 18:56 by charaobs