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5.1 In a nutshell
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imager
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4.8 UV Table handling
Contents
Index
5
Application: Single-field imaging and deconvolution
Subsections
5
.
1
In a nutshell
5
.
2
Measurement equation and other definitions
5
.
3
Imaging
5
.
3
.
1
Image size and pixel size
5
.
3
.
1
.
1
Link between image size and
uv
cell size
5
.
3
.
1
.
2
Link between pixel size and largest
uv
spatial frequency
5
.
3
.
2
Weighting and Tapering
5
.
3
.
3
Implementation (
READ UV
,
UV_MAP
and
UV_STAT
)
5
.
3
.
4
Defining the Projection Center of the image
5
.
3
.
5
Typical imaging session
5
.
4
Deconvolution
5
.
5
The family of
CLEAN
algorithms (
HOGBOM
,
CLARK
,
MX
,
SDI
,
MRC
,
GCLEAN
,
MULTI
)
5
.
5
.
1
CLEAN
ideas
5
.
5
.
1
.
1
Stopping criteria
5
.
5
.
1
.
2
Stability criterion
5
.
5
.
1
.
3
Formation of the
CLEAN
map
5
.
5
.
2
Basic
CLEAN
algorithms (
HOGBOM
,
CLARK
and
MX
)
5
.
5
.
2
.
1
HOGBOM
5
.
5
.
2
.
2
CLARK
5
.
5
.
2
.
3
MX
5
.
5
.
3
Advanced
CLEAN
algorithms to deal with extended structures (
SDI
,
MRC
,
GCLEAN
and
MULTI
)
5
.
5
.
3
.
1
SDI
5
.
5
.
3
.
2
MRC
5
.
5
.
3
.
3
GCLEAN
5
.
5
.
3
.
4
MULTI
5
.
5
.
4
Implementation and typical use
5
.
5
.
4
.
1
Implementation
5
.
5
.
5
Restoring step:
UV_RESTORE
5
.
5
.
6
Typical deconvolution session
5
.
6
Practical advices
5
.
6
.
1
Comparison of deconvolution algorithms
5
.
6
.
2
A few (obvious) practical recommendations
