0

I am working (in fact, trying to work) with TPoint for improving a solar telescope pointing calibration (SST, in Casleo, AR) and stumbled on the input data for INDAT command. SST is a multibeam solar observation telescope with Alt-Az support.

INDAT Observation record Format 4 is described as follows on the documentation:

star "observed" Az/El (°,°)
telescope raw Az/El (°,°)
[up to 2 auxiliary readings]

And the sample file for an AltAz support is mmt.dat, whose heading and 1st observational data row are follows:

!
!  Sample data from the Multiple Mirror Telescope
!

MMT 1987 July 8
: ALTAZ
+31 41 19.6 1987 07 08 +15.0  734.5  2608.0 0.30


02 59 39.744 +03 53 41.15 -0.00082 -0.0743 B1950 03 01 32.220 +04 04 05.72 23 01

On the data rows, what would be the "column headers"?

MTIA,

Myrna

myrnayk
  • 3
  • 3

1 Answers1

1

:)

Are you talking about the meaning of this fields?:

02 59 39.744 +03 53 41.15 -0.00082 -0.0743 B1950 03 01 32.220 +04 04 05.72 23 01

According to https://sites.astro.caltech.edu/~srk/TP/Literature/Tpoint_SunWorks.pdf, they seem to belong to Observation record format 2 (pag. 18):

  • star mean RA/Dec (h,m,s,◦,′,′′, $\mu_{\alpha}$,$\mu_{\delta}$,equinox)
  • telescope raw RA/Dec (h,m,s,◦,′,′′)
  • local apparent sidereal time (h,m)

If you mean this fields:

+31 41 19.6 1987 07 08 +15.0 734.5 2608.0 0.30

They seem to be the run parameters (pag. 18):

  • latitude (◦,′,′′)
  • UTC date (y,m,d)
  • temperature (◦C)
  • pressure (mB)
  • height above sea level (metre, default determined from pressure)
  • relative humidity (range 0–1, default 0.5)
Luis López
  • 452
  • 2
  • 10