FITS
Header Pane
The FITS Header Pane displays the
FITS Format image header in a docking pane and
permits its contents to be edited. The FITS Header pane may be
resized and moved to a different window border or detached from the
window entirely. This pane docks along any of the window borders
for a horizontal or vertical format. The stick-pin allows you to
reduce the pane to a tab which opens and hides from the window
border.
Header changes affect only the displayed
image. To make the changes permanent in the image file, you must
save the image using the File > Save command or an
equivalent. For further information about editing, see
Editing the FITS Header and
Working with FITS Format.
Color Coding
This dialog uses light pink and purple colors for
different parts of the FITS header listing. Purple is used in the
second column to visually separate the keyword value from the
keyword name in column 1 and the keyword comment in column 3. Pink
is used in the entire row for keywords that cannot be edited, such
as SIMPLE or NAXIS1. The pink keywords may be changed by various
Mira functions but may not be manually changed using a Mira header
editor.
Original FITS keywords from the FITS file
When opening the image from a FITS file, Mira may
scale the data using the FITS values for BSCALE and BZERO and may
change BITPIX for the image held in memory. To show the original
values from the FITS file, Mira adds four COMMENT keywords at the
end of the FITS header. These are visible in the FITS Header
Pane and
FITS Header Editor. They are stripped from the header
when saved to a FITS file. Here are the four keyword lines with
typical values:
COMMENT FITS file opened
with SIMPLE = T
COMMENT FITS file opened
with BITPIX = 16
COMMENT FITS file opened
with BZERO = 32768
COMMENT FITS file opened
with BSCALE = 1
NOTE
|
The header grid shows all values left-aligned, as
this makes the information easier to discern when scanned
vertically. However, FITS format requires numeric keyword values in
the FITS file to be right-aligned. All keyword values are saved
with the correct alignment when the data are stored to the FITS
file.
|
Related Topics
FITS Format
FITS Keywords
FITS Header Editor
Editing the FITS Header
List COMMENT Keywords
History Keywords
LIST WCS KEYWORDS
List Statistics Keywords
Image Information Editor
MIRAPROC Keyword
Modify Keywords
Add Metadata
Mira Pro x64 User's Guide, Copyright Ⓒ 2023 Mirametrics, Inc. All
Rights Reserved.
|