Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/~phil/optics/hornpos/121102/sb_surveyresults.pdf Дата изменения: Sat Jan 12 01:43:16 2013 Дата индексирования: Tue Feb 5 14:02:36 2013 Кодировка: Поисковые слова: http astrokuban.info astrokuban

S-band horn measurements
Nominal focal point location and boresight tilt. Units of inches and degrees. Dome centerline coordinate system. +x toward secondary, +y toward stairwell, +z upward -248.145 0 -389.822 .6 3 0

Horn phase center locations and tilt angles from 31 Oct. 2012 Last set of measurements after turret floor adjustments. Units of inches and degrees. SRX Error STX Error -247.909 .236 -247.627 .518 -0.010 -0.010 -0.181 -0.181 -390.995 -1.173 -389.944 -.122 0.18 0.45 -0.57 -1.20 0.51 0.51 -0.20 -0.20

The sense of increasing x tilt angle is the mouth of the horn is moving away from the secondary when pivoting around the plane of the floor. The sense of increasing y tilt angle is the mouth of the horn is moving away from the stairwell when pivoting around the plane of the floor.

Comparison of two different reference sets.
The target circle centers as measured and computed by Netrology. Based on the secondary reference set used during the survey. Units of inches. SRX SRXA STX STXA STXB SRXB -248.376 -248.370 -247.735 -247.723 -247.680 -247.966 0.162 -0.074 0.471 -0.348 -0.070 0.033 -395.339 -395.349 -394.477 -394.476 -394.543 -395.468

The target circle centers calculated post survey by Mathematica. Based on the June 28, 2004 videogrammetry data of the secondary.


SRX STX STXB

-248.348 -247.704 -247.653

0 .0 8 6 0.399 -0.140

-395.355SRXA -394.493STXA -394.558SRXB

-248.345 -247.696 -247.938

-0.146 -0.424 -0.041

-395.364 -394.491 -395.483

Differences in the centers between the two reference systems Units of inches. SRX SRXA STX STXA STXB SRXB Mean -.028 -.025 -.031 -.027 -.027 -.028 -.028 .076 .072 .072 .076 .070 .074 .073 .016 .015 .016 .015 .015 .015 .015