Difference between revisions of "ALMAguides"

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== <font size = 3>'''Introduction'''</font size> ==
  
* <font size = 3>'''Guides for reducing ALMA Science Verification data using CASA 4.3'''</font size>
+
This page contains tutorials to guide new ALMA users through some common types of data imaging and analysis using example ALMA datasets. In addition, we provide detailed guides to the calibration and imaging of some of the publicly-available ALMA Science Verification data that illustrate several different ALMA capabilities.  
** The links below lead to overview pages for each science verification observation. The guides themselves are linked from the overview pages.  These guides are a useful tools for those who would like to learn the process of calibration and imaging in detail.
 
** [[TWHydraBand7 | TWHydraBand7]]: The protoplanetary disk source TW Hya at Band 7 (0.87 mm)
 
** [[NGC3256Band3 | NGC3256Band3]]: The galaxy merger NGC 3256 at Band 3 (3 mm)
 
** [[AntennaeBand7 | AntennaeBand7]]: Mosaic of the galaxy merger NGC 4038/4039 (Antennae) at Band 7 (0.87 mm)
 
** [[IRAS16293Band9 | IRAS16293Band9]]: Mosaic of the protostellar cluster IRAS16293-2422 at Band 9 (0.45 mm)
 
** [[File:BR1202_SV_Band7_Calibration_notes.pdf | BR1202_SV_Band7_Calibration_notes]]: Supplemental notes on the calibration of Science Verification target BR1202-0725 in CASA 3.3
 
** [[ALMA2014_LBC_SVDATA]]
 
  
<!--
+
If you are a new user of CASA, take a look at [[Getting_Started_in_CASA | Getting Started in CASA]].
** [[M100_Band3]]
+
 
** [[M100_Band3_SingleDish_4.3]]
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If you are new to CASAguides, start with [[How_To_Use_A_CASAGuide | How to use these CASA Tutorials]].
** [[M100_Band3_Combine_4.3]]
+
 
 +
== <font size = 3> '''General Imaging Tutorials''' </font size> ==
 +
 
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The following tutorials use example ALMA datasets to guide new CASA users through the basic steps required for imaging and self-calibration.  ALMA data are delivered with standard calibrations applied and they are ready for imaging.
 +
 
 +
''These guides have been updated to work in CASA 5.4.0, and to use {{tclean}} rather than {{clean}}. To understand the differences between clean and tclean, please see the guide: [[TCLEAN_and_ALMA | Examples for using the new tclean CASA task for ALMA Imaging]]. ''
  
 +
* [[First_Look_at_Imaging | A first look at imaging in CASA]]:  This guide gives a first look at imaging and image analysis in CASA.
 +
* [[First_Look_at_Self_Calibration | A first look at self-calibration in CASA]]:  This guide demonstrates continuum self-cal.
 +
* [[First_Look_at_Line_Imaging | A first look at spectral line imaging in CASA]]:  This guide shows imaging of a spectral line.
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* [[First_Look_at_Image_Analysis | A first look at image analysis in CASA]]:  This guide demonstrates moment creation and basic image analysis.
  
** [[Juno_LBC_Imaging_4.2.2]]
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<!--
** [[HLTau_LBC_Imaging_4.2.2]]
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The following guides have been updated to run in CASA 6.1, which uses Python 3.  
** [[Mira_LBC_Imaging_4.2.2]]
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* [[First_Look_at_Imaging_CASA_6 | A first look at imaging in CASA 6.1]]:  This guide gives a first look at imaging and image analysis in CASA.
** [[3C138_LBC_Imaging_4.2.2]]
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* [[First_Look_at_Self_Calibration_CASA_6 | A first look at self-calibration in CASA 6.1]]:  This guide demonstrates continuum self-cal.
** [[SDP.81_LBC_Imaging_4.2.2]]
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* [[First_Look_at_Line_Imaging_CASA_6 | A first look at spectral line imaging in CASA 6.1]]:  This guide shows imaging of a spectral line.
 +
* [[First_Look_at_Image_Analysis_CASA_6 | A first look at image analysis in CASA 6.1]]:  This guide demonstrates moment creation and basic image analysis.
 
-->
 
-->
  
 
<!--
 
<!--
** [[DataWeightsAndCombination]]
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Community Day Tutorials:
 +
* [[First_Look_at_Imaging_CDE | A first look at imaging in CASA]]:  This guide gives a first look at imaging and image analysis in CASA.
 +
* [[First_Look_at_Self_Calibration_CDE | A first look at self-calibration in CASA]]:  This guide demonstrates continuum self-cal.
 +
* [[First_Look_at_Line_Imaging_CDE | A first look at spectral line imaging in CASA]]:  This guide shows imaging of a spectral line.
 +
* [[First_Look_at_Image_Analysis_CDE | A first look at image analysis in CASA]]:  This guide demonstrates moment creation and basic image analysis.
 
-->
 
-->
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 +
'''New!'''
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* [[Automasking_Guide | A guide to automasking]]: This guide demonstrates the automasking functionality of {{tclean}}.
 +
* [[ADMIT_Products_and_Usage | A guide for utilizing ADMIT for your data]]: This guide discusses how to use ADMIT and customize it for your data.
 +
 +
 +
You can find archived versions of the first look guides for older versions of CASA [[Archived_ALMA_CASAguides | here]].
 +
 +
== <font size = 3>'''Information for ALMA users wishing to reprocess or reimage ALMA data'''</font size> ==
 +
 +
* [[ALMA_Imaging_Pipeline_Reprocessing | Examples for ALMA Imaging Pipeline Reprocessing]]
 
<!--
 
<!--
 +
** [[ALMA_Cycle_4_Imaging_Pipeline_Reprocessing | Cycle 4 Examples]]
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** [[ALMA_Cycle_5_Imaging_Pipeline_Reprocessing | Cycle 5 Examples]]
 +
-->
 +
 +
* [[Guide_NA_ImagingTemplate | A guide for using the North American ALMA Manual Imaging Template]]
 +
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== <font size = 3>'''CASAguides for reducing ALMA Science Verification data'''</font size> ==
 +
 +
The links below lead to overview pages for each science verification observation. The guides themselves are linked from the overview pages.  These guides are useful tools for those who would like to learn the process of calibration and imaging in detail.
 +
 +
''The following ALMA science verification guides are currently being updated, and have been validated for the CASA versions listed. ''
 +
 +
* [[AntennaeBand7 | AntennaeBand7]]: Mosaic of the galaxy merger NGC 4038/4039 (Antennae) at Band 7 (0.87 mm). Validated for CASA 5.7/6.1.
 +
* [[M100_Band3]]: Demonstration of combining 12m-array, 7m-array, and Total Power data for M100. Validated for CASA 5.4.
 +
* [[IRAS16293Band9 | IRAS16293Band9]]: Mosaic of the protostellar cluster IRAS16293-2422 at Band 9 (0.45 mm). Validated for CASA 5.4.
 +
* [[3C286_Polarization]]: Demonstration of the reduction of ALMA continuum polarization toward the quasar 3C286. Validated for CASA 5.4.
 +
* [[Sunspot_Band6]]: Demonstration of the reduction and imaging of the sunspot data at Band 6 (1.25mm). Validated for CASA 5.4.
 +
 +
== <font size = 3>'''Legacy guides and scripts for reducing ALMA Science Verification data'''</font size> ==
 +
 +
''The following ALMA science verification guides and scripts have been validated for older versions of CASA, and will not continue to be updated for new CASA releases. ''
 +
 +
* [[TWHydraBand7 | TWHydraBand7]]: The protoplanetary disk source TW Hya at Band 7 (0.87 mm). Last validated for CASA 4.3.
 +
* [[NGC3256Band3 | NGC3256Band3]]: The galaxy merger NGC 3256 at Band 3 (3 mm). Last validated for CASA 4.3.
 +
* [[ALMA2014_LBC_SVDATA]]: Imaging scripts and details for the 2014 ALMA Long Baseline Campaign science verification data for Juno, Mira, HL Tau, and SDP.81. Last validated for CASA 4.2.2.
 +
* [[File:BR1202_SV_Band7_Calibration_notes.pdf | BR1202_SV_Band7_Calibration_notes]]: Supplemental notes on the calibration of Science Verification target BR1202-0725 in CASA 3.3.
 +
 +
<!--
 +
** [[M100_Band3]]
 +
** [[M100_Band3_SingleDish_4.3]]
 +
** [[M100_Band3_Combine_4.3]]
 
**[[3C286_Polarization]]
 
**[[3C286_Polarization]]
 
**[[3C286_Polarization_Calibration_4.2.2]]
 
**[[3C286_Polarization_Calibration_4.2.2]]
 
**[[3C286_Polarization_Imaging_4.2.2]]
 
**[[3C286_Polarization_Imaging_4.2.2]]
 +
[[Automasking_Guide]]
 
-->
 
-->
<!--
 
[[TWHydraBand7_Calibration_4.1]]
 
[[TWHydraBand7_Imaging_4.1]]
 
[[NGC3256_Band3_Calibration_for_CASA_4.1]]
 
[[NGC3256_Band3_Imaging_for_CASA_4.1]]
 
[[AntennaeBand7_Calibration_4.1]]
 
[[AntennaeBand7_Imaging_4.1]]
 
[[IRAS16293_Band9_-_Calibration_for_CASA_4.1]]
 
[[IRAS16293_Band9_-_Imaging_for_CASA_4.1]]
 
-->
 
  
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== <font size = 3>'''Additional information on relevant techniques and tools for ALMA data '''</font size> ==
 +
 +
* [[DataWeightsAndCombination | A Guide to CASA Data Weights and How to Ensure They are Correct for Data Combination]]
  
* <font size = 3>'''[[Guide_To_Processing_ALMA_Data_for_Cycle_0 | A Guide to Processing ALMA Data for Cycle 0]]'''</font size>
+
* [[TCLEAN_and_ALMA | Examples for using the new tclean CASA task for ALMA Imaging]]
** This page takes you through the steps of processing Cycle 0 data from the ALMA data archive.  The guide describes some helpful hints for downloading the data, and describes the process all the way through imaging and self-calibration, and image analysis.
 
** You can also get a look at example data calibration scripts used for Cycle 0 data at the following links.  These were written for CASA 3.4  The latest version is 4.2.
 
*** TDM (128 channels/spw) [[File:TDM.example.ms.scriptForCalibration.py]]
 
*** FDM (3840 channels/spw) [[File:FDM.example.ms.scriptForCalibration.py]]
 
*** If you need to update 3.4 scripts to 4.2, see more information [[Updating_a_script_to_work_with_CASA_4.2|here]]
 
  
 +
* [[Analysis Utilities]] -- a Python module containing utilities for analysis and plotting.
  
<!--
+
* [[Solar System Models in CASA 4.0 | Solar System Models in CASA 4.0]] and beyond
-->
 
* <font size = 3>'''Imaging Tutorials for CASA beginners'''</font size>  The following are a set of tutorials for those new to CASA.  These tutorials should be followed in the order they are listed below.
 
** [[First_Look_at_Imaging | A first look at imaging in CASA]]  This guide gives a first look at imaging and image analysis in CASA.
 
** [[First_Look_at_Self_Calibration | A first look at self-calibration in CASA]]  This guide demonstrates continuum self-cal. [IN PROGRESS]
 
** [[First_Look_at_Line_Imaging | A first look at spectral line imaging in CASA]]  This guide shows imaging of a spectral line.  [IN PROGRESS]
 
** [[First_Look_at_Image_Analysis | A first look at image analysis in CASA]]  This guide demonstrates moment creation and basic image analysis.  [IN PROGRESS]
 
  
 +
* Tutorials related to ALMA Solar Science Verification Data: [http://almascience.org/alma-data/science-verification/tutorial-alma-solar-science-verification-data CASA 4.7]
  
* <font size = 3>'''[[Guide_To_Simulating_ALMA_Data | A Guide to Simulating ALMA Data.]]''' Start here to learn about simulations.</font size>
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== <font size = 3>'''Processing Cycle 0 data from the ALMA archive'''</font size> ==
**<font size = 2>'''Jump directly to the simulations examples with the following links.  Current version = 4.3'''</font size>
 
***  [[Simulating Observations in CASA 4.3 | Simulating Observations in CASA 4.3]]
 
***  [[Simulating Observations in CASA 4.2 | Simulating Observations in CASA 4.2]]
 
***  [[Simulating Observations in CASA 4.1 | Simulating Observations in CASA 4.1]]
 
***  [[Simulating Observations in CASA 4.0 | Simulating Observations in CASA 4.0]]
 
***  [[Simulating Observations in CASA 3.4 | Simulating Observations in CASA 3.4]]
 
***  [[Simulating Observations in CASA 3.3 | Simulating Observations in CASA 3.3]]
 
  
 +
[[Guide_To_Processing_ALMA_Data_for_Cycle_0 | A Guide to Processing ALMA Data for Cycle 0]] (last checked in CASA 4.2) takes you through the steps of processing Cycle 0 data from the ALMA data archive.  The guide describes some helpful hints for downloading the data, and describes the process all the way through imaging and self-calibration, and image analysis.
  
* <font size = 3>'''[[Analysis Utilities]] -- a Python module containing utilities for analysis and plotting.'''</font size>
+
You can also get a look at example data calibration scripts used for Cycle 0 data at the following links.  These were written for CASA version 3.4.
 +
* TDM (128 channels/spw) [[File:TDM.example.ms.scriptForCalibration.py]]
 +
* FDM (3840 channels/spw) [[File:FDM.example.ms.scriptForCalibration.py]]
 +
* If you need to update 3.4 scripts to 4.2 or later, see more information [[Updating_a_script_to_work_with_CASA_4.2|here]]
  
 +
== <font size = 3>'''Simulating ALMA data'''</font size> ==
  
* <font size = 3>'''[[Solar System Models in CASA 4.0 | Solar System Models in CASA 4.0]]''' and beyond</font size>
+
Start here to learn about simulations: [[Guide_To_Simulating_ALMA_Data | A Tutorial for Simulating ALMA Data.]]  
  
 +
Jump directly to the simulation examples with [[Simulating Observations in CASA 5.4 | Simulation Examples in CASA 5.4]].
  
* <font size = 3>'''[[Current MM/Submm Guides | Other MM/Submm CASA Guides]]'''
+
<!--
 +
* Examples for older versions of CASA:[[Simulating Observations in CASA 4.4 | Simulation Examples in CASA 4.4]]  [[Simulating Observations in CASA 4.2 | 4.2]]  [[Simulating Observations in CASA 4.1 | 4.1]]  [[Simulating Observations in CASA 4.0 | 4.0]]  [[Simulating Observations in CASA 3.4 | 3.4]]  [[Simulating Observations in CASA 3.3 | 3.3]]
 +
-->
  
 +
== <font size = 3> '''Old guides for other telescopes''' </font size>  ==
  
* <font size = 3>'''[[Main_Page | Main casaguides page with additional information]]'''</font size>
+
Several older millimeter/submillimeter casaguides that may be of interest to users are listed in [[Past_MM/Submm_Guides | Past MM/Submm CASA Guides]]. Note that they are not currently being maintained and have been last validated for the CASA version listed beside each.
  
 +
For CASA guides that focus on VLA data, please see [[Karl G. Jansky VLA Tutorials]].
  
* <font size = 3>'''Other useful Information'''</font size>
+
== <font size = 3>'''Other useful Information'''</font size> ==
** [http://casa.nrao.edu CASA homepage including download and installation information]
+
* [http://almascience.org/ ALMA Science homepage]  
** [http://science.nrao.edu/alma/ALMA-QuickRef.gif ALMA Quick Reference]
+
* [http://casa.nrao.edu CASA homepage including download and installation information]
** [https://almascience.nrao.edu/call-for-proposals/sensitivity-calculator ALMA Sensitivity Calculator]
+
* [https://almascience.nrao.edu/about-alma/proposing/sensitivity-calculator ALMA Sensitivity Calculator]
 +
* [[HTT2 | CASA Hints, Tips & Tricks]]
 +
* [[ALMA Pipeline Known Issues]]
  
  

Latest revision as of 13:38, 25 February 2021

Introduction

This page contains tutorials to guide new ALMA users through some common types of data imaging and analysis using example ALMA datasets. In addition, we provide detailed guides to the calibration and imaging of some of the publicly-available ALMA Science Verification data that illustrate several different ALMA capabilities.

If you are a new user of CASA, take a look at Getting Started in CASA.

If you are new to CASAguides, start with How to use these CASA Tutorials.

General Imaging Tutorials

The following tutorials use example ALMA datasets to guide new CASA users through the basic steps required for imaging and self-calibration. ALMA data are delivered with standard calibrations applied and they are ready for imaging.

These guides have been updated to work in CASA 5.4.0, and to use tclean rather than clean. To understand the differences between clean and tclean, please see the guide: Examples for using the new tclean CASA task for ALMA Imaging.


New!


You can find archived versions of the first look guides for older versions of CASA here.

Information for ALMA users wishing to reprocess or reimage ALMA data

CASAguides for reducing ALMA Science Verification data

The links below lead to overview pages for each science verification observation. The guides themselves are linked from the overview pages. These guides are useful tools for those who would like to learn the process of calibration and imaging in detail.

The following ALMA science verification guides are currently being updated, and have been validated for the CASA versions listed.

  • AntennaeBand7: Mosaic of the galaxy merger NGC 4038/4039 (Antennae) at Band 7 (0.87 mm). Validated for CASA 5.7/6.1.
  • M100_Band3: Demonstration of combining 12m-array, 7m-array, and Total Power data for M100. Validated for CASA 5.4.
  • IRAS16293Band9: Mosaic of the protostellar cluster IRAS16293-2422 at Band 9 (0.45 mm). Validated for CASA 5.4.
  • 3C286_Polarization: Demonstration of the reduction of ALMA continuum polarization toward the quasar 3C286. Validated for CASA 5.4.
  • Sunspot_Band6: Demonstration of the reduction and imaging of the sunspot data at Band 6 (1.25mm). Validated for CASA 5.4.

Legacy guides and scripts for reducing ALMA Science Verification data

The following ALMA science verification guides and scripts have been validated for older versions of CASA, and will not continue to be updated for new CASA releases.

  • TWHydraBand7: The protoplanetary disk source TW Hya at Band 7 (0.87 mm). Last validated for CASA 4.3.
  • NGC3256Band3: The galaxy merger NGC 3256 at Band 3 (3 mm). Last validated for CASA 4.3.
  • ALMA2014_LBC_SVDATA: Imaging scripts and details for the 2014 ALMA Long Baseline Campaign science verification data for Juno, Mira, HL Tau, and SDP.81. Last validated for CASA 4.2.2.
  • File:BR1202 SV Band7 Calibration notes.pdf: Supplemental notes on the calibration of Science Verification target BR1202-0725 in CASA 3.3.


Additional information on relevant techniques and tools for ALMA data

  • Tutorials related to ALMA Solar Science Verification Data: CASA 4.7

Processing Cycle 0 data from the ALMA archive

A Guide to Processing ALMA Data for Cycle 0 (last checked in CASA 4.2) takes you through the steps of processing Cycle 0 data from the ALMA data archive. The guide describes some helpful hints for downloading the data, and describes the process all the way through imaging and self-calibration, and image analysis.

You can also get a look at example data calibration scripts used for Cycle 0 data at the following links. These were written for CASA version 3.4.

Simulating ALMA data

Start here to learn about simulations: A Tutorial for Simulating ALMA Data.

Jump directly to the simulation examples with Simulation Examples in CASA 5.4.


Old guides for other telescopes

Several older millimeter/submillimeter casaguides that may be of interest to users are listed in Past MM/Submm CASA Guides. Note that they are not currently being maintained and have been last validated for the CASA version listed beside each.

For CASA guides that focus on VLA data, please see Karl G. Jansky VLA Tutorials.

Other useful Information


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