Telescope Keywords

Here is a non-exhaustive list of telescope keywords.

• RA Right ascension (J2000) in degrees. Notice that the comment field indicates the value in hh:mm:ss.s format.
• DEC Declination (J2000) in degrees. Notice that the comment field indicates the value in hh:mm:ss.s format.
• ADA.POSANG Position angle on sky as measured from North to East.(degrees).
• TEL.AIRM.START Airmass at start.
• TEL.AIRM.END Airmass at end.
• TEL.AMBI.FWHM.START Astronomical Site Monitor seeing at start. Note that this value might differ significantly from the ISAAC image quality, which is usually better.
• TEL.AMBI.FWHM.END Astronomical Site Monitor seeing at start. Note that this value might differ significantly from the ISAAC image quality, which is usually better.