AGw#3 at LFBG Verfication

After mounting of IRTC at LFBG

Check Operation of IRTC

• Power on and test IRTC (worked on 2-Feb-2012 MST after a reboot of the PC)

Check operation of AGw#3

• Power on AGw#3
• Connect via GCS authorization and oaccontrol commands
• Collect guider and wfsc images

(worked OK on 01-Feb-2012 MST, too bad it didn't work the following night)

Check rotator position

• Set rotator value to 9.0
• Guide probe pivot point should be at 70 degrees counter-clockwise straight up. This is about 10:00.

On-sky Tasks

Active Preset

• Send Active preset to Persson's standard
• Should Guide
• Should collimate with Active Optics
• Continue till telescope is collimated

OK, on 04-Feb-2012 UT

Find center of rotation on Guider

• Acquire Preset with guide probe on-axis to Persson's standard
• Put on-axis star on guider image (currently x=0, y=612.5)
• Find rotation center
  • Integrate guider for 60 seconds
  • Rotate instrument rotator 360 degrees
• Change IE, CA to place guide star on rotation center
• Move guide probe to place guide star, on the rotation center, near the center of the guider image. Record new guide probe x,y value
• Find rotation center again. Move star via IE, CA. Move star to near center of guider image
• Repeat until done

Completed on 04-Feb-2012 UT

Determine Guider Hotspot

• Active Preset to on-axis Persson's standard (50 elevation)
• Allow to collimate
• setWFSExpTime left 10000 (10 seconds)
• Move hotspot back/forth and up/down
  • getHotspot left
  • setHotspot left # #
  • watch for vignetting on the wfsc image
  • find hotspot position where wfsc pupil is in the middle of vignetting positions

Check guide probe Z motion

• Active Preset to Persson's standard at 79 elevation
• Allow to collimate
• Acquire preset to on-axis star
• Position star in the center of the acquisition image via IE, CA
• Change M2 focus by 1000nm increments in + and -.
• See if Center of stars shifts.

• If there is a shift of more then a few pixels, then there is a problem

IRTC center of rotation

• Active Preset to bright WT10 or ACT star at 60-70 elevation
• Allow to collimate
• Determine good IRTC integration time (< 0.1 seconds)
• Turn off Active Optics
• Turn off Guiding
• Collect image on IRTC
  • Rotate Instrument Rotator 360 degrees
  • Collect short exposure IRTC image as fast as possible as long as rotator is moving
• Process image with Source Extractor and find rotation center

Collect Transform Data

Collect Field Data

Install new transform and collect a check set

Measure pupil wobble with rotator angle (off-sky)

Collect Performance Data

At several elevation and guide star magnitudes:

• Preset to Persson's standard
• Allow to collimate
• Collect Dice5 Data Set

-- DougMiller - 03 Feb 2012