Other links:

• dish primary general info
  
• AO surveys
  

    I've gathered different topics for  the primary reflector on this page.

2000-2003 photogrammetry surveys of primary

• These surveys used photogrammetry from the towers.
• Lynn baker was in charge of the surveys.
• datasets
  

• 2000-2003 primary survey events

  date	dataset	prefix	description	Links
  DEC00	Tiedown cables	M_TD0	Measure targets at reflector tiedown cables before any adjustments
  DEC00	Tiedown cables	ADJ_TD0	Adjust dish at the measured tiedown cables using M_TD0 data.
  JAN01	Tiedown cables	M_TD1	Remeasure reflector targets at tiedown cables after ADJ_TD0	Primary reflector surface errors after first re-alignment (M_TD1)
  MAR01	Tiedown cables	ADJ_TD1	Completed second adjustment of reflector targets at tiedown cables using M_TD1 data.
  MAR01-OCT01	All targets	M_SUR1	All 38000 targets now installed. Take photos and then measure on measuring machine.  The photo measurements  finished around oct01
  MAR01	Tiedown cables	M_TD2	Took td positions from M_SUR1 compare with M_TD1	Primary reflector surface errors measured after 2nd re-alignment (M_TD2)
  OCT01-NOV01	All targets	ADJ_SUR1	After M_sur1 start adjusting all the panels. This  finished around nov01.
  NOV01-MAR03	All targets	M_SUR2	After ADJ_SUR1 take the photos in nov/dec01.  Remeasure all the photos. The measurements and computations finished around mar03	Primary reflector surface errors (east half) after (M_SUR2). Scatter plot of radial errors survey1 vs survey2 (pdf file) (M_SUR1,M_SUR2). Survey2 results (and a comparison with survey 1)

2001_2003 Datasets:

• vstarsSur1.dat : M_SUR1 dataset
  
• vstarsSur2.dat : M_SUR2 dataset
• Datafile format
• approxmately 38000 entries.
  
• TargetNm xposFt  yposFt zposFt    xmeasErrMM ymeasErrMM zmeasErrMM  ErrFitToSphereMM
• Note: there are some missing targets from the survey.
  

2018 Blackmore survey of primary

• 25may18  Blackmore sensors scans dish with fmcw laser