map

MAPPING
A GILDAS software
March 29th, 2007
Version 2.0
Questions? Comments? Bug reports? Mail to: gildas@iram.fr
The GILDAS team welcomes an acknowledgment in publications
using GILDAS software to reduce and/or analyze data.
Please use the following reference in your publications:
http://www.iram.fr/IRAMFR/GILDAS

Documentation
  J. PetyIn charge: J. Pety.
  N. Rodriguez–Fernandez, S. GuilloteauActive developers: N. Rodriguez–Fernandez, S. Guilloteau.
  R. Lucas, K. BouyoucefMain past contributors: R. Lucas, K. Bouyoucef.
Software
  J. PetyIn charge: J. Pety.
  S. Guilloteau, F. Gueth, N. Rodriguez–FernandezActive developers: S. Guilloteau, F. Gueth, N. Rodriguez–Fernandez.
  R. Lucas, K. BouyoucefMain past contributors: R. Lucas, K. Bouyoucef.

1. IRAM
2. Observatoire de Paris
3. Observatoire de Bordeaux

Note: this is the on-line version of the MAPPING Manual. A PDF version is also available.

Related information is available in:

- IRAM Plateau de Bure Interferometer: Introduction
- IRAM Plateau de Bure Interferometer: OBS Users Guide
- IRAM Plateau de Bure Interferometer: Calibration CookBook
- CLIC: Continuum and Line Interferometric Calibration
- MIS: Tools for Millimeter Interferometry Simulation
- GREG: Graphical Possibilities
- SIC: Command Line Interpretor

- Contents
- Warning
- Basic concepts
  - Overview of the data reduction and analysis
  - The structure of the MAPPING program
    - Structure and recommendations
    - A bit of history
  - Cookbook for the impatient ones
    - Imaging and deconvolution pipeline
    - Finely tuned imaging and deconvolution
    - Noise estimation and plotting
- Interacting with tables
  - Structure
    - table
    - header
  - Interacting with table
    - Basics
    - Advanced
  - Visualization (GO UVALL and GO UVCOV)
  - Flagging (UV_FLAG, RUN UV_MFLAG, RUN UV_CLIP)
  - Fitting (GO UVFIT and GO PLOTFIT)
    - General considerations
    - Implementation
    - Practical advices
  - The widget Operations on uv tables
- Single-field imaging and deconvolution
  - Measurement equation and other definitions
  - Imaging
    - Image size, pixel size, robust weighting and tapering
      - Link between image size and cell size
      - Link between pixel size and largest spatial frequency
      - Weighting
    - Implementation (READ UV, UV_MAP and UV_STAT)
    - Typical imaging session
  - Deconvolution
    - Philosophy
    - The family of CLEAN algorithms (HOGBOM, CLARK, MX, SDI, MRC, MULTI)
      - CLEAN ideas
      - Stopping criteria
      - Formation of the CLEAN map
      - Basic CLEAN algorithms (HOGBOM, CLARK and MX)
      - Advanced CLEAN algorithms to deal with extended structures (SDI, MULTI and MRC)
    - Implementation and typical use
      - Implementation
      - Typical deconvolution session
    - Comparison and practical advices
      - Comparison of deconvolution algorithms
      - A few (obvious) practical recommendations
- Wide-field imaging and deconvolution
  - General considerations about wide-field imaging
  - Mosaicing
    - Observations and processing
    - Imaging (UV_MAP and RUN MAKE_MOSAIC)
    - Deconvolution (MOSAIC, HOGBOM, CLARK and SDI)
    - Implementation and typical use
      - Implementation
      - Typical mosaicing session
  - Short spacings (RUN UV_SHORT and RUN UV_ZERO)
    - Algorithms to merge single-dish and interferometer information
      - Hybridization technique
      - Pseudo-visibility technique
      - Comparison
    - Practical considerations
      - When are short-spacing information needed?
      - How to optimize single-dish observations?
      - How to use your single-dish observations?
- Internal Helps
  - CLEAN Language Internal Help
  - Description of Associated Tasks
    - mapping
    - UV_AVERAGE
    - UV_CASA
    - UV_CENTER
    - UV_CHECKBEAM
    - UV_CIRCLE
    - UV_CLIP
    - UV_CTIME
    - UV_CUTS
    - UV_DFT
    - UV_FIT
    - UV_FITC
    - UV_FIT-PROPER
    - UV_GETINTERVAL
    - UV_HANNING
    - UV_INVERT
    - UV_LIST
    - UV_MERGE
    - UV_MFLAG
    - UV_MOSAIC
    - UV_MULT
    - UV_NOISE
    - UV_PROPER_MOTION
    - UV_REF_GAUSS
    - UV_REF_MODEL
    - UV_REF_POINT
    - UV_ROBUST
    - UV_SHORT
    - UV_SPLITPOLAR
    - UV_SUBTRACT
    - UV_STOKES
    - UV_TEMPLATE
    - UV_TRIM
    - UV_UPDATE_FIELDS
    - UV_SPLITPOLAR
    - UV_VLA_REORDER
    - UV_ZERO
    - MAP_REFINE
    - UV_CAL
    - UV_GAIN
    - UV_CAL
    - UV_GAIN
- Properties of the Fourier Transform
- Bibliography
- Index
- About this document ...