Let's make a map file for a position velocity diagram
[Image: P-V DIAGRAM]
This TASK is to make a map file for a position-velocity diagram from spectral data.
After this task, a map output can be made by using MAKE CONTOUR
for contour maps or by using MAP to SSS
for gray or simple color on SSS window.
- * NOTICE:
-
Output file will be overwritten when the name of the output file is the same as the one already exists.
- * USAGE:
-
- 1. Starting P-V DIAGRAM
-
Click [P-V DIAGRAM] on Button Panel. The following parameter window appears.
<
Parameter window for P-V DIAGRAM
>
- 2. Setting up parameters
-
- Type the spectrum file name in "Spectrum File(in)" or select a file from [File List]. Usage of [File List]
- Type a map file name for output in "Map file (out)".
- Choose the coordinate system from '(RA, DEC)', '(L, B)', '(dRA, dDEC)', '(dl, db)', '(dAZ, dEL)' or '(X, Y)' at "Coordinate".
- Press [Position map]. The TTT window with observed position will appear.
- Define a line to create a map file by choosing a start corner by using a mouse.
A single click will define a position for a start corner.
- Define a line to create a map file by choosing a position for an end corner by using a mouse.
- Set "Gridding Mode" to 'Spacing'.
- Specify a data spacing of map along position in "Spacing(")".
- Choose 'smoothing' at "Searching Mode".
- Specify FWHM of the Gaussian smoothing in "Smoothing Width(")".
- Set "Projection Mode" to 'cos Dec'.
- Type minimum and maximum of range at velocity in "Sp. range".
- Set "Smoothing Unit" to 'km/s'.
- Specify FWHM of the Gaussian smoothing along spectrum in units of above "Smoothing Unit" in "Smoothing Width(spe)".
- 3. Execution
-
- Click [Exec] in the menu bar, and select [Activate program] from the pull-down menu.
- This TASK ends with the message "Appears to have ended successfully" in the message window.
Last update: January 13, 2005
