Set Pointings: Difference between revisions
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Created page with '{{Simulations Intro}} Category: Simulations == Specifying Pointings == The pointings in a mosaic observation are specified in a text file (default name '''$project.ptg.txt'…' |
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* '''direction''', '''mapsize''', and '''pointingspacing''', specify where you want to observe, and how to space the pointings of the mosaic. | * '''direction''', '''mapsize''', and '''pointingspacing''', specify where you want to observe, and how to space the pointings of the mosaic. | ||
* '''maptype''' selects a | * '''maptype''' selects a square (regular raster) or hexagonal (alternate rows offset by 1/2 primary beam) tiling pattern | ||
* '''integration''' specifies how long to observe each pointing of the mosaic. | * '''integration''' specifies how long to observe each pointing of the mosaic. | ||
Naturally, you can run once with '''setpointings'''=True, '''predict'''=False, edit the pointings file, and then run with '''setpointings'''=False, '''predict'''=True. | Naturally, you can run once with '''setpointings'''=True, '''predict'''=False, edit the pointings file, and then run with '''setpointings'''=False, '''predict'''=True. | ||
Revision as of 19:49, 9 June 2010
↵ Simulating Observations in CASA
Specifying Pointings
The pointings in a mosaic observation are specified in a text file (default name $project.ptg.txt). You can create this file yourself (setpointings=False), or simdata can tile a rectangular area on the sky and create the file for you (setpointings=True).
- direction, mapsize, and pointingspacing, specify where you want to observe, and how to space the pointings of the mosaic.
- maptype selects a square (regular raster) or hexagonal (alternate rows offset by 1/2 primary beam) tiling pattern
- integration specifies how long to observe each pointing of the mosaic.
Naturally, you can run once with setpointings=True, predict=False, edit the pointings file, and then run with setpointings=False, predict=True.
