Plate.UpdateFITS() Method

Writes current/updated descriptive keywords and WCS values (if available) back to the attached FITS image.

Syntax

Plate.UpdateFITS()

The method syntax has these parts:

Remarks

The Plate.ExposureStartTime property may have fractional seconds in its value as required for fast moving objects. If fractional seconds are present, the DATE-OBS and (if originally present) TIME-OBS records will be written with three decimal places in the seconds part. Otherwise, the fractional seconds are omitted from the FITS data. The Plate.ExposureInterval property, written to the EXPOSURE and EXPTIME keywords, is always written in "general" format, with 8 significant places.

If the plate was solved (via a call to Plate.Solve()) since being attached, the following is done:

1. A block of WCS fields is written or updated in the FITS file.
2. The magnitude zero-point (Plate.MagZeroPoint property) is written or updated with FITS keyword ZEROPT. This is valid for the color band indicated by CLRBAND.
3. The following HISTORY records are appended to the FITS image:

   HISTORY   WCS added by PinPoint 5.0 at 2007-07-01T05:22:46
   HISTORY     Matched 18 stars from the Gray GSC-ACT Catalog
   HISTORY     Average residual was 0.21 arc-seconds