addsky loads a file defining skylines and uses this to add fakes sky lines to a frame or a series of frames.
addspec skylines data scale xover yover [seed xd yd yrms]
| skylines | --- | Name of the skyline definition file |
| data | --- | Name of data file or list of data files to add sky lines to. These will be overwritten on output. |
| scale | --- | Scale factor to multiply the input strengths by to give an easy way to change the effective brightness, telescope size etc. 1 implies no change. |
| xover | --- | Oversampling factor (in terms of unbinned pixels) in the X direction, i.e. spectral direction. |
| seed | --- | Random number seed. This and succedding arguments is only prompted for if there is more than one data file |
| xdrift, ydrift | --- | Drift per image in x and y. Note that X is the dispersion direction and therefore represents flexure while Y includes guiding as well. |
| yrms | --- | RMS scatter in Y. |
| seeing1 | --- | Starting seeing, in pixels. It is assumed that the spectrum profile is gaussian. Then a linear ramp of seeing will be added to them with image number. The seeing is added in quadrature to the specified width. |
| seeing2 | --- | Ending seeing, in pixels. It is assumed that the profiles given are without any seeing added. |
| nreset | --- | Reset drift every nreset images. Simulates a position correction at the telescope. |
This command is a member of the classes: Programs, Spectra, Testing.
Author: T.R. Marsh
Created: 18 October 2005
Revised: 02 December 2006