Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/pub/software/karma/data/annotations/m42.ann Дата изменения: Sat Feb 15 04:24:54 2003 Дата индексирования: Thu Dec 27 20:57:29 2007 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п п

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#
# SAMPLE KARMA ANNOTATION FILE M42.ANN
#
# *** to be used with M42_*.FITS images ***
#
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# Comments are preceded by a ``#'' character
#
# All of the commands names below are given in CAPS for readability,
# but they could just as easily be lower case.
#
# World coordinates here are decimal degrees of Right Ascension and
# Declination (in accordance with the FITS standard).

COORD W # These are the attribute settings at startup time.
PA STANDARD # If no annotation files loaded prior to this one
COLOR GREEN # have changed any attributes, then these commands
FONT hershey14 # are reduntant.

# Label the image near the top. Use relative coordinates to fix
# the position regardless of image zoom.
#
COLOR WHITE
TEXT R 0.1 0.9 THE ORION NEBULA

# Change font to something a little smaller for other labels.
FONT hershey12

# Mark the four Trapezium stars with blue circles, and connect them.
# Use world coordinates for these markers and name label.
# Since COORD is currently set to W, specifying W coords in the
# argument lists of the objects below is not necessary.
#
# Note W coords are in degrees for consistency with coordinate
# information in the FITS image header, even though RA is labeled
# in hours by Karma. Note also the TEXT string is continued onto
# another line. The leading space is ignored, but a trailing space
# after "Trap" would not be. The commas in the CLINES command
# string are not necessary, but make it easier for a human to read.
#
COLOR BLUE
DOT 83.81613 -5.38706 # Theta 1A Orionis; HD 37020
DOT 83.81738 -5.38494 # Theta 1B Orionis; HD 37021
DOT 83.81875 -5.38972 # Theta 1C Orionis; HD 37022
DOT 83.82208 -5.38778 # Theta 1D Orionis; HD 37023
CIRCLE 83.81613 -5.38706 0.0005 # Theta 1A Orionis; HD 37020
CIRCLE 83.81738 -5.38494 0.0005 # Theta 1B Orionis; HD 37021
CIRCLE 83.81875 -5.38972 0.0005 # Theta 1C Orionis; HD 37022
CIRCLE 83.82208 -5.38778 0.0005 # Theta 1D Orionis; HD 37023
CLINES 83.81613 -5.38706, 83.81738 -5.38494, 83.82208 -5.38778, \
83.81875 -5.38972, 83.81613 -5.38706
TEXT 83.84 -5.38 ``Trap\
ezium''

# Indicate the star Theta 1C Orionis, source of much of the UV flux
# ionizing the gas in the nebula. Use a mixture of world and
# relative coordinates to fix the label on the screen when zooming.
#
COLOR YELLOW
LINE W 83.81875 -5.38972 R 0.6 0.1
TEXT R 0.6 0.10 Theta 1C

# Mark the region imaged by the HST mosaic released in 1995
# (http://oposite.stsci.edu/pubinfo/pr/95/45.html).
#
COLOR RED
BOX 83.86867 -5.44977 83.74646 -5.31922
TEXT 83.86867 -5.31602 HST

# One transverse light year at a distance of 1500 ly subtends 0.038
# degrees. At a declination of -5.39 degrees, this is 0.0382 Right
# Ascension degrees.
#
COLOR GREEN
CBOX 83.91196 -5.49598 0.0382 0.038
CROSS 83.91196 -5.49598 0.0382 0.038
TEXT 83.88 -5.49598 1 ly^2

# Here is a series of disconnected lines, for no very good
# reason. The last continuation character is ignored because
# the following line is empty.
#
COLOR LIGHT GRAY
DLINES R \
0.96 0.05 0.99 0.05, 0.96 0.10 0.99 0.10, 0.96 0.15 0.99 0.15, \
0.96 0.20 0.99 0.20, 0.96 0.25 0.99 0.25, 0.96 0.30 0.99 0.30, \
0.96 0.35 0.99 0.35, 0.96 0.40 0.99 0.40, 0.96 0.45 0.99 0.45, \
0.96 0.50 0.99 0.50, 0.96 0.55 0.99 0.55, 0.96 0.60 0.99 0.60, \
0.96 0.65 0.99 0.65, 0.96 0.70 0.99 0.70, 0.96 0.75 0.99 0.75, \
0.96 0.80 0.99 0.80, 0.96 0.85 0.99 0.85, 0.96 0.90 0.99 0.90, \
0.96 0.95 0.99 0.95, \

# Change default coordinates to relative. In the DLINES command
# above, the default was world coordinates, so the R was necessary
# to specify something else.
#
COORD R

# Here are a of couple vectors.
#
COLOR CYAN
VECTOR 0.1 0.25, 0.05 0.05
VECTOR 0.1 0.30, 0.05 0.05

COORD W # Change back to world coordinates as the default.

# Here are three plain, adjacent ellipses. No position angle
# parameter is given, so PA=0. However this applies to the first
# semiaxis given, not necessarily the larger of the two. With the
# semiminor axis listed first, these ellipses have an effective
# position angle of 90 degrees (in the ``standard'' system -- see
# below).
#
COLOR ORANGE
ELLIPSE 83.9151 -5.3978 0.002 0.005
ELLIPSE 83.9111 -5.3978 0.002 0.005
ELLIPSE 83.9071 -5.3978 0.002 0.005

# Put a dot in the center of all three orange ellipses, using a
# single command.
#
DOTS 83.9151 -5.3978, 83.9111 -5.3978, 83.9071 -5.3978

# Include another annotation file, which has examples of some
# rotatable objects.
#
INCLUDE m42_include.ann

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#
# END OF SAMPLE KARMA ANNOTATION FILE M42.ANN
#
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