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Index of help pages

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A
adding images
AstroGrid - setting up to work with GRIP
AstroGrid - use in star charts
astrophotographs - processing steps
astro-process steps
averaging images
B
background colour neutralisation
batch menu
blob detection
blob menu
bring GRIP window to front
bring image to front
C
calibration
channel mixing
clicking image to magnify it
colour balance
colour histograms
colour profiles
colour saturation
combination menu on table of images
combining astrophotographs
combining images
combining images
compare measurements of several images
configuration menu
contrast - changing manually
contrast - inverting
contrast - stretching automatically
converting an image between 8 and 16 bits per channel
converting an image to monochrome
convolutions menu
coordinate system for position measurements
copying images
copying measurement shapes
correcting with dark frames
correcting with flat field images
cropping an image
curves - changing contrast manually
D
dark frames in the batch astro process
deconvolution
defective pixels - detecting and saving the list
defective pixels - loading a list of
defective pixels - using
detect defective pixels
detecting blobs
distance calibration
dividing by flat field images
E
edit menu on table of images
enlarging an image
estimating star magnitudes
estimating star magnitudes (photometry)
extreme value filter
F
features of GRIP
file menu on main window
file menu on table of images
filter - mean
filter - median
filter - nearest extreme
filter - rank
filters
filter - variance
find GRIP window and bring to front
find image and bring to front
flat frames in the batch astro process
flipping an image horizontally or vertically
G
Gaussian kernels
geometry menu
GRIP's main menu
GRIP's unusual features
GRIP introduction & image formats
H
help menu on main window
help menu on table of images
Hipparcos data file (hip_main.dat)
histogramming an area of an image
history view
hover and magnify
I
image formats for GRIP
image help menu
image information
image measurement and calibration
image menu
images - combining
images open - table
images - selecting
image window menus
ImFrame menus
interpolating a RAW image
introduction to GRIP
inverting contrast in an image
J
JAR files for AstroGrid
K
kernel for (de-)convolution
L
length calibration
levels menu
linear convolutions
M
magnified view around mouse
magnitude estimation
magnitudes, measuring (photometry)
main menu of GRIP
margins, RAW image
mean filter
measurement and calibration menu
measurements - comparing several images
measurements include metadata
measuring along a line in an image
measuring an area of an image
measuring a single point
measuring blobs
measuring pinhole diameter
measuring position - coordinate system
measuring star magnitudes (photometry)
median filter
menu - batch
menu - blob
menu - combining images
menu - convolutions
menu - geometry
menu - image
menu - image help
menu - levels
menu - measurement and calibration
menus - main
menus on image window
menus on table of images
metadata in measurements
mixing channels
moving measurement shapes
multiplying images
N
nearest extreme filter
negating an image
neutralising background colour
non-linear convolutions
O
open images - table
P
photometry - measuring star magnitudes
pinhole measurement
position measurements - coordinate system
printable scale for calibration
processing steps for astrophotographs
profiling along a line in an image
Q
R
rank filter
RAW image - processing into a 16-bit image
RAW margins
recombining channels
reducing an image
reflecting an image horizontally or vertically
rotating an image
S
saturation
saving images
scale for calibration
scaling an image
selecting images
Sesame service - use in star charts
shapes for measuring
show GRIP window in front
show image in front
single point measurements
slide show controls
splitting the channels of an image
star chart, using AstroGrid, Sesame, Hipparcos and Tycho
star detection
star magnitude estimation
stretching image contrast automatically
subtracting dark frames
subtracting images
SVG scale for calibration
T
table of open images
thresholding
troubleshooting GRIP
Tycho data file (tyc_main.dat)
U
V
variable star magnitude estimation
variance filter
view history
W
warping astrophotographs to match
X
Y
Z
zooming images
 
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