Index
16 Psyche - minor planet
24 Themis - minor planet
3C 66A
4 Vesta - minor planet
A
abbreviations, Java
Active Galactic Nucleus (AGN) 3C 66A
adapters for eyepieces
adapters for filters
adding images
aligning a Newtonian telescope
alpha Lyrae (Vega)
altazimuth telescope mount
Andromeda galaxies M31, M32 & M110 (25cm telescope)
animation of Jupiter's satellites (applet)
aperture of lens
API
API download
application, downloading
application for examining EXIF metadata in image files
Aquila - nova 2009
asteroid 1036 Ganymed
asteroid 16 Psyche
asteroid 24 Themis
asteroid 4 Vesta
asteroid position plotting
asteroids
AstroGrid - setting up to work with GRIP
AstroGrid - use in star charts
astrophotographic process - my usual
astrophotographs - processing steps
astrophotography exposure settings
astrophotography - trails
astrophotography with compact camera
astrophotography with fish-eye lens
astro-process steps
averaging images
avoiding saturation of star images
B
B145 dark nebula
B168 dark nebula (and Cocoon Nebula)
B33 nebula - Horsehead
BAA (British Astronomical Association)
background colour neutralisation
background correction
bands, definition
Barlow lens for photography
barn door tracker
batch menu
Beehive cluster, M44
big-endian data
bits per channel
blob detection
blob detection in Java code
blob menu
border terrier
brightest stars
bring GRIP window to front
bring image to front
British Astronomical Association (BAA)
BufferedImage
byte code
C
calculator - field of view
calculator - star trail length
calibration
California Nebula - NGC1499
camera field of view calculator
camera field of view in telescope
camera field of view table
camera file formats
camera live view
camera pixel size & telescope resolving power
camera settings in image files
camera techniques
channel mixing
channels, definition
Christmas Tree star cluster
classes involved in ImFrame
classifying pixels in Java code
clicking image to magnify it
Cocoon Nebula, IC5146 (and B168)
collimation
colour
colour balance
colour histograms
colour of street lighting
colour profiles
colour saturation
colour theory
Coma Berenices constellation
coma corrector
combination menu on table of images
combining astrophotographs
combining images
combining images
comet 103P/Hartley
comet 17P/Holmes
Comet 78P/Gehrels
Comet C/2004 Q2 (Machholz)
Comet C/2009 P1 Garradd
comet-like ghost image
comet position plotting
comets
compare measurements of several images
compiler
compression in image files
Cone Nebula
configuration menu
constellation - Coma Berenices
constellation - Cygnus
constellation - Monoceros
constellation - Orion
constellations
constellation - Virgo
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 background
correcting coma
correcting defective pixels
correcting with dark frames
correcting with flat field images
Crab Nebula, M1
Crayford focusser
cropping an image
curves - changing contrast manually
Cygnus constellation
D
dark frames
dark frames in the batch astro process
dark nebula B145
dark nebula B168 (and Cocoon Nebula)
deconvolution
defective pixels
defective pixels - detecting and saving the list
defective pixels - loading a list of
defective pixels - using
Delphinus (constellation)
detect defective pixels
detecting blobs
detecting objects in images with Java
detector layout in cameras
digital camera file formats
digital negative file format
display of Saturn's satellites (applet)
distance calibration
dividing by flat field images
DNG image format
DNG image format
documentation of SkyWatcher telescope
dogs
double cluster in Perseus
download compiled application
download JRE
download the source code
drive error analysis
drive errors reduced by stacking
dumbbell nebula M27
E
Earthshine on the crescent Moon
eclipses of the moon
edit menu on table of images
electronic noise
enlarging an image
equatorial telescope mount
estimating star magnitudes
estimating star magnitudes (photometry)
ET Cluster, NGC457
EXIF metadata
EXIF metadata in image files, application for examining
exposing stars without saturation
exposure settings for astrophotography
exposure time
extreme value filter
eyepiece adapters
F
features of GRIP
field of view calculator
field of view table
file formats
file menu on main window
file menu on table of images
filter adapters
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
fish-eye lens astrophotography
fish-eye lenses
FITS image format
FITS image format
Flame nebula (NGC 2024)
flat frames
flat frames in the batch astro process
flipping an image horizontally or vertically
focusser
focussing
focussing with 2-hole telescope lid
G
galaxies M31, M32 & M110 in Andromeda (25cm telescope)
galaxies M81 & M82
galaxies M84 & M86
galaxies M89 & M90
galaxy M105
galaxy M106
galaxy M33 (pinwheel)
galaxy M51 (whirlpool)
galaxy M82
galaxy M96
galaxy NGC4216 & neighbours
Galilean satellites of Jupiter (applet)
Gamma Cygni & NGC6910
Gamma Cygni & NGC6910
gamma explanation
Ganymed - minor planet 1036
Garradd, Comet C/2009 P1
Gaussian kernels
Gehrels, Comet P78
Gemini and Orion - Milky Way
geometry menu
ghost reflections inside lenses
globular cluster M13 in Hercules
globular cluster M15
globular cluster M3
globular cluster M92 in Hercules
gnomonic projection
grey-scale images, definition
GRIP, downloading
GRIP's main menu
GRIP's object detection mechanism
GRIP's unusual features
GRIP introduction & image formats
Gyulbudaghian's variable nebula
H
h & Per double cluster
H-alpha regions around Monoceros
help menu on main window
help menu on table of images
Hercules - M13 globular cluster
Hercules - M92 globular cluster
hints & tips for SkyWatcher telescope
Hipparcos data file (hip_main.dat)
histogramming an area of an image
history view
holes in telescope lid
Horsehead Nebula (B33)
hover and magnify
HR Delphini (variable star)
I
IC434 nebula - Horsehead
IC5146, Cocoon Nebula
image file formats
image files, application for examining metadata in
image formats for GRIP
image help menu
image information
imageio package
image measurement and calibration
image menu
image metadata
image reading and writing
image representation in Java
images - combining
image segmentation in Java code
image sizes
images open - table
images - selecting
image structure
image types
image window menus
ImFrame and associated classes
ImFrame menus
internal lens reflections
interpolating a RAW image
interpolation between pixels
introduction to GRIP
inverting contrast in an image
ISO speed
J
JAI
JAR files
JAR files for AstroGrid
java.awt.image.BufferedImage
java.awt.image.Raster
Java 5, new language features
Java Advanced Imaging
Java course
javadoc
Java image representation
Java introduction
Java is little-endian
JavaScript course
Java terms and abbreviations
javax.imageio package
JDK
JDK, downloading
JPEG image format
JRE
JRE, downloading
Julian Date
Jupiter's satellites (applet)
Jupiter conjunction with Uranus, Sep 2010 & Jan 2011
JVM
K
Kelso
kernel for (de-)convolution
L
laser collimator
LED street lamps
length calibration
lens aperture
lens field of view table
lens reflections causing ghosts
Leo's tail
levels menu
light pollution
linear convolutions
little-endian data
live view on the camera
loading images from disc
lunar eclipses
lunar photography
Lyra - M57 planetary nebula
M
M101 & SN2011fe (supernova)
M105 galaxy
M106 galaxy
M110 Andromeda galaxy (25cm telescope)
M11 open cluster in Scutum
M13 globular cluster in Hercules
M15 globular cluster
M1 supernova remnant (the Crab Nebula)
M27 dumbbell nebula
M31 Andromeda galaxy (25cm telescope)
M32 Andromeda galaxy (25cm telescope)
M33 pinwheel galaxy
M3 globular cluster
M42, the Orion nebula
M44, the Beehive cluster
M45, the Pleiades
M51 whirlpool galaxy
M57 planetary nebula in Lyra
M76 planetary nebula in Perseus
M81 & M82 galaxies
M82 galaxy
M84 & M86 galaxies
M89 & M90 galaxies
M92 globular cluster in Hercules
M96 galaxy
Machholz, Comet C/2004 Q2
magnified view around mouse
magnitude estimation
magnitudes, measuring (photometry)
main menu of GRIP
Maksutov-Cassegrain telescope
margins, RAW image
masks for detecting objects in images
Meade ETX telescope
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 objects in images with Java
measuring pinhole diameter
measuring position - coordinate system
measuring star magnitudes (photometry)
median filter
Melotte 111 (Coma Berenices)
memory required for images
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
metadata in image files, application for examining
metadata in measurements
meteors
meteors - Perseids Aug 2007
meteors - Perseids Aug 2010
meteors - Piscids Sep 2010
Milky Way
Milky way - fish-eye view
Milky Way past Gemini and Orion
minor planet 1036 Ganymed
minor planet 16 Psyche
minor planet 24 Themis
minor planet 4 Vesta
minor planets
mixing channels
Monoceros constellation
Monoceros - H-alpha regions
monochrome images, definition
Moon, just past full
moon and planet positions (applet)
Moon - Earthshine
moon eclipses
moon photography
moons of Jupiter (applet)
moons of Saturn (applet)
mosaic of part of Virgo cluster of galaxies
mounts for telescopes
moving measurement shapes
multiplying images
my usual astrophotographic process
N
nearest extreme filter
negating an image
negative projection photography
neutralising background colour
new telescope - documentation
NGC 1023 - galaxy in Perseus
NGC1499 - California Nebula
NGC 2023 & 2024 nebulae - Zeta Orionis
NGC 2237 - Rosette Nebula
NGC 2244 - star cluster in Rosette Nebula
NGC 2264 - Christmas Tree cluster & Cone nebula
NGC4216 & other galaxies
NGC4248 galaxy
NGC4258 galaxy (M106)
NGC4565 edge-on spiral galaxy
NGC457 - the ET Cluster
NGC6910 & Gamma Cygni
NGC6910 & Gamma Cygni
NGC 6960 - veil nebula (W part)
NGC 6992 - veil nebula (E part)
NGC7000, North America Nebula
NGC 7331 - galaxy in Pegasus
NGC 869 & 884 - double cluster in Perseus
night sky photography - compact camera
night sky photography -trails
noise in photographs
non-integral pixel coordinates
non-linear convolutions
non-linear curves (gamma)
North America Nebula, NGC7000
nova Aql 2009
Nova Delphini 1967
novae
O
object detection in Java code
open cluster M11 in Scutum
open images - table
Oracle (Java providers)
Orion and Gemini - Milky Way
Orion constellation
Orion nebula, M42
Orion Nebula - Trapezium stars
overlapping photos
P
panoramic images
pattern for reading/writing pixels
Perseid meteors Aug 2007
Perseid meteors Aug 2010
Perseus double cluster, h &
Perseus - M76 planetary nebula
photographing stars without saturation
photographing the moon
photographing the night sky - compact camera
photographing the night sky - trails
photometry - measuring star magnitudes
pinhole measurement
pinhole photography
pinwheel galaxy M33
Piscid meteors Sep 2010
pixel, definition
pixel classification in Java code
pixel interpolation
pixel reading/writing pattern
pixels - defective
planetary nebula M27 (dumbbell)
planetary nebula M57 in Lyra
planetary nebula M76 in Perseus
planet positions (applet)
planets, minor
Pleiades, M45
Pleiades and Comet Machholz
plotting positions of solar system objects
position measurements - coordinate system
positions of main solar system objects
prime focus photography in Newtonian scope
printable scale for calibration
processing steps for astrophotographs
process - my astrophotographic
profiling along a line in an image
projection - gnomonic
PSD image format
PSD image format
Psyche - minor planet 16
Q
R
random noise
rank filter
rasters
RAW image format
RAW image - processing into a 16-bit image
RAW margins
reading images from disc
reasons for stacking multiple frames
recombining channels
reducing an image
reflecting an image horizontally or vertically
reflections inside lenses
region of interest (ROI) detection in Java code
resolving power of telescope & camera pixels
RGB
Rosette Nebula
rotating an image
S
S/N ratios
satellites of Jupiter (applet)
satellites of Saturn (applet)
saturation
saturation and star photos
Saturn's satellites (applet)
saving images
saving images to disc
scale for calibration
scaling an image
Scutum - M11 open cluster
segmenting images in Java code
selecting images
Sesame service - use in star charts
seven sisters (M45, the Pleiades)
shapes for measuring
show GRIP window in front
show image in front
signal-to-noise ratios
single point measurements
sizes of images
SkyWatcher telescope documentation
slide show controls
SN2011fe supernova in M101
sodium lamps
solar system object positions (applet)
source code download
spectrum of street lighting
splitting the channels of an image
squaring the circle
stacking multiple frames - why?
star chart, using AstroGrid, Sesame, Hipparcos and Tycho
star data
star detection
star detection in Java code
star magnitude estimation
star photography - compact camera
star photography - trails
star trail length calculator
star trails
Stephan's quintet (of galaxies)
street lighting
stretching image contrast automatically
subtracting dark frames
subtracting images
Sudoku helper
Sun's Java web site
Sun and sunspots
Sun Microsystems
supernovae
supernova remnant M1
Supernova SN2011fe in M101
SVG scale for calibration
T
table of open images
telescope - camera piggy-back
telescope documentation
telescope field of view with camera
telescope mounts - equatorial & altazimuth
telescope resolving power & camera pixels
terms, Java
terriers
Themis - minor planet 24
thermal noise
Theta Orionis - the Trapezium
thresholding
thresholding images in Java code
TIFF image format
TIFF image format
TIFF - little- vs big-endian
trails of stars
Trapezium stars in the Orion nebula
troubleshooting GRIP
Tycho data file (tyc_main.dat)
U
Uranus conjunction with Jupiter, Sep 2010 & Jan 2011
V
V1722 Aql
variable nebula, Gyulbudaghian's
variable star magnitude estimation
variance filter
Vega
veil nebula
Vesta - minor planet 4
view history
Virgo cluster of galaxies
Virgo cluster of galaxies - mosaic
Virgo constellation
W
warping astrophotographs to match
whirlpool galaxy M51
whole-sky astrophotography
why stack multiple frames?
WritableRaster
writing images to disc
X
XSLT generating these pages
Y
Z
Zeta Orionis (Flame and Horsehead Nebulae)
zooming images