-bash-3.00$ wc texts/all_*_observations.txt 0 0 0 texts/all_0505_observations.txt 0 0 0 texts/all_0506_observations.txt 151 151 6039 texts/all_0507_observations.txt 33 33 1377 texts/all_0509_observations.txt 16 16 633 texts/all_0605_observations.txt 135 135 5309 texts/all_0606_observations.txt 0 0 0 texts/all_0607_observations.txt 94 94 3780 texts/all_0609_observations.txt 34 34 1386 texts/all_0705_observations.txt 26 26 1028 texts/all_0706_observations.txt 201 201 7989 texts/all_0707_observations.txt 73 73 2907 texts/all_0709_observations.txt 0 0 0 texts/all_polychrome_0505_observations.txt 222 222 11898 texts/all_polychrome_0506_observations.txt 471 471 24861 texts/all_polychrome_0507_observations.txt 196 196 10346 texts/all_polychrome_0509_observations.txt 43 43 2200 texts/all_polychrome_0605_observations.txt 730 730 38040 texts/all_polychrome_0606_observations.txt 22 22 1195 texts/all_polychrome_0607_observations.txt 471 471 24751 texts/all_polychrome_0609_observations.txt 66 66 3399 texts/all_polychrome_0705_observations.txt 145 145 7533 texts/all_polychrome_0706_observations.txt 1051 1051 54801 texts/all_polychrome_0707_observations.txt 511 511 27049 texts/all_polychrome_0709_observations.txt 4691 4691 236521 total
Defining Pointing Terminology
There has been a lot of confusion about pointing terminology.
CSO pointing model: the telescope pointing model used and written as a black box
- has already been corrected for aberration/nutation
- is in current epoch coordinates (e.g. J2007.34)
Instrument-specific correction to pointing model
- ??? also referred to as 't terms'
- is offset between CSO pointing model and real locations
- should be a function of alt (and maybe az)
- is recorded in "RPC" files
- is in units of distance on the sky: delta-RA and delta-DEC, or delta-ALT and delta-AZ will be in the same units, while if they were in coordinate units delta-RA and delta-AZ would have to be scaled by 1/cos(DEC) or 1/cos(ALT) respectively
FAZO and FZAO: Fixed Azimuth Offset and Fixed Zenith Angle Offset
- these are ambiguously defined in the pipeline code
- ???? FAZO/FZAO include both the functional instrument specific pointing offset and any manual changes made at the telescope [manual only relevant to 2007 observations]
- ???? or are these JUST fixed offsets, and the instrument specific corrections are not included? Either way, how can I separate out manually-applied fixed offsets from fitted-model offsets?
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