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imager
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References
Index
Contents
1
Pre-amble
2
Introduction: IMAGER in short
2
.
1
Objectives and Design
2
.
2
IMAGER for you...
2
.
3
IMAGER for beginners
2
.
4
IMAGER for previous users of
MAPPING
2
.
5
IMAGER for huge data sets: 100 000 channel imaging with NOEMA or ALMA
2
.
6
IMAGER for lazy or overbooked ones
2
.
7
IMAGER for ALMA data
2
.
8
IMAGER for image analysis and publication plots
2
.
9
IMAGER for Simulations
3
Introduction: IMAGER principles
3
.
1
Overview of the data reduction and analysis
3
.
2
The structure of the
IMAGER
program
3
.
3
The user interface: SIC and GreG
3
.
4
Fundamental control variable:
BEAM_STEP
–
Read carefully !
3
.
5
Imaging/deconvolution: a brief sequence of commands
3
.
6
Getting Help: the HELP command and the ? token
4
Data Format: UV Tables & Images
4
.
1
In a nutshell
4
.
2
Gildas data format
4
.
3
FITS data format
4
.
4
UV table description
4
.
5
NOEMA: UV Tables from CLIC
4
.
6
ALMA: UV Tables from C
ASA
4
.
7
Reading UV tables
4
.
8
UV Table handling
5
Application: Single-field imaging and deconvolution
5
.
1
In a nutshell
5
.
2
Measurement equation and other definitions
5
.
3
Imaging
5
.
4
Deconvolution
5
.
5
The family of
CLEAN
algorithms (
HOGBOM
,
CLARK
,
MX
,
SDI
,
MRC
,
GCLEAN
,
MULTI
)
5
.
6
Practical advices
6
Application: Wide-field imaging and deconvolution
6
.
1
In a nutshell
6
.
2
General considerations about wide-field imaging
6
.
3
Mosaicing
6
.
4
Large Mosaics: the
SAULT
method
6
.
5
Mosaic and JvM factor
6
.
6
Tiny (or degenerate) Mosaics
6
.
7
Mosaic and Self-Calibration
7
Application: Self Calibration
7
.
1
Self-Calibration in a nutshell
7
.
2
Self-Calibration Principle
7
.
3
Self-Calibration Implementation
7
.
4
Basic use
7
.
5
Advanced use
7
.
6
Transfering the solution to other
uv
data sets.
7
.
7
Data re-weighting
7
.
8
Data flagging
8
Application: Short and Zero spacings
8
.
1
In a nutshell
8
.
2
Principle
8
.
3
Algorithms to merge single-dish and interferometer information
8
.
4
Hybridization technique and ALMA
8
.
5
The Zero spacing: an important subset
8
.
6
Short Spacings in practice: command
UV_SHORT
8
.
7
Practical considerations
9
Application: UV plane analysis
10
Application: Continuum emission
10
.
1
Continuum imaging
10
.
2
Split Continuum and Spectral line imaging
10
.
3
Combined Continuum and Spectral line imaging
10
.
4
The
CONTINUUM
image
11
Application: Visual Checks and Image Displays
11
.
1
The basic visualization commands
11
.
2
The
VIEWER
program
11
.
3
The
/DIRECTORY
option - Simultaneous display.
11
.
4
Specific
IMAGER
visualisation tools
12
Application: The Imager PIPELINE and REPORT tools
12
.
1
Preparing the data:
ORGANIZE
step
12
.
2
Before using the
PIPELINE
: the
REPORT
command
12
.
3
The
PIPELINE
Widget
12
.
4
The non interactive
PIPELINE
12
.
5
User control: the
STOP
symbol
12
.
6
Mosaics and other limitations.
12
.
7
After using the
PIPELINE
: the
REPORT
command
13
Advanced: Polarization Handling
13
.
1
Data Handling
13
.
2
The STOKES command
14
Advanced: Specific cases and dirty tricks
14
.
1
Really Huge Problems
14
.
2
Moving Targets
14
.
3
Rotating Disks: the KEPLER command
15
Advanced: Simulating Observations
15
.
1
UV coverage and beam size
15
.
2
Complete Simulation
16
Advanced: Further Data Analysis
16
.
1
Basic Data Cube Handling and Comparison
16
.
2
Matched Filtering
16
.
3
Line Stacking
16
.
4
Rotationally symmetric structures: Keplerian disks
17
Language: DISPLAY\ Internal Help
17
.
1
Language
17
.
2
CATALOG
17
.
3
COLOR
17
.
4
COMPARE
17
.
5
EXPLORE
17
.
6
EXTRACT
17
.
7
FIND
17
.
8
INSPECT_3D
17
.
9
LOAD
17
.
10
POPUP
17
.
11
SET
17
.
12
SHOW
17
.
13
SLICE
17
.
14
SPECTRUM
17
.
15
STATISTIC
17
.
16
VIEW
18
Language: CLEAN\ Internal Help
18
.
1
Language
18
.
2
ALMA
18
.
3
BUFFERS
18
.
4
CCT_CLEAN
18
.
5
CCT_CONVERT
18
.
6
CCT_MERGE
18
.
7
CLEAN
18
.
8
DISCARD
18
.
9
DUMP
18
.
10
FIT
18
.
11
LOG
18
.
12
MAP_CONVOLVE
18
.
13
MAP_COMBINE
18
.
14
MAP_COMPRESS
18
.
15
MAP_INTEGRATE
18
.
16
MAP_REPROJECT
18
.
17
MAP_RESAMPLE
18
.
18
MAP_SMOOTH
18
.
19
SPECIFY
18
.
20
MOSAIC
18
.
21
MX
18
.
22
PRIMARY
18
.
23
READ
18
.
24
SUPPORT
18
.
25
UV_BASELINE
18
.
26
UV_CHECK
18
.
27
UV_CHOP
18
.
28
UV_COMPRESS
18
.
29
UV_CONTINUUM
18
.
30
UV_EXTRACT
18
.
31
UV_FIELDS
18
.
32
UV_FILTER
18
.
33
UV_FLAG
18
.
34
UV_MAP
18
.
35
UV_RESAMPLE
18
.
36
UV_RESIDUAL
18
.
37
UV_RESTORE
18
.
38
UV_REWEIGHT
18
.
39
UV_SHIFT
18
.
40
UV_SMOOTH
18
.
41
UV_SPLIT
18
.
42
UV_STAT
18
.
43
UV_SUBTRACT
18
.
44
UV_TIME
18
.
45
UV_TRIM
18
.
46
UV_TRUNCATE
18
.
47
WRITE
19
Language: CALIBRATE\ Internal Help
19
.
1
Language
19
.
2
AMPLITUDE
19
.
3
APPLY
19
.
4
COLLECT
19
.
5
DERIVE
19
.
6
PLAIT
19
.
7
SCALE_FLUX
19
.
8
MODEL
19
.
9
SOLVE
19
.
10
TRANSFORM
19
.
11
UV_SELF
19
.
12
UV_SELECT
19
.
13
UV_SORT
20
Language: ADVANCED\ Internal Help
20
.
1
Language
20
.
2
FEATHER
20
.
3
FLUX
20
.
4
HOW_TO
20
.
5
MAP_CONTINUUM
20
.
6
MAP_POLAR
20
.
7
MASK
20
.
8
MFS
20
.
9
MOMENTS
20
.
10
PROPER_MOTION
20
.
11
STOKES
20
.
12
UV_ADD
20
.
13
UV_CIRCLE
20
.
14
UV_CORRELATE
20
.
15
UV_DEPROJECT
20
.
16
UV_FIT
20
.
17
UV_LINEARIZE
20
.
18
UV_MERGE
20
.
19
UV_MOSAIC
20
.
20
UV_PREVIEW
20
.
21
UV_RADIAL
20
.
22
UV_SHORT
20
.
23
XY_SHORT
21
Language: BUNDLES\ Internal Help
21
.
1
Language
21
.
2
COMBINE
21
.
3
KEPLER
21
.
4
SELFCAL
21
.
5
SPECTRAL_CLEAN
21
.
6
UV_DETECT
22
Language: IMAGER\ Internal Help
22
.
1
Language
22
.
2
TIPS
22
.
3
REPORT
22
.
4
PIPELINE
22
.
5
HOGBOM
22
.
6
CLARK
22
.
7
GCLEAN
22
.
8
MRC
22
.
9
MULTISCALE
22
.
10
SDI
22
.
11
SIMULATE
23
Language: SIMULATE\ Internal Help
23
.
1
Language
23
.
2
ADD_NOISE
23
.
3
ARRAY
23
.
4
UV_TRACKS
24
History: Bugs and Release Notes
24
.
1
Change summary for Version 4.6
24
.
2
Change summary for Version 4.5
24
.
3
Change summary for Version 4.4
24
.
4
Known Bugs
24
.
5
Recent changes in repository
24
.
6
Change History
A. IMAGER versus CASA
A..
1
Imaging Philosophy and Data Architecture
A..
2
Frequency and Velocity scales
A..
3
Transfering UV data from C
ASA
A..
4
In CASA
A..
5
In
IMAGER
A..
6
Transfering Image data
B. Properties of the Fourier Transform
References
Index
