PYSYNPHOT Calls
Table 5 lists the required pysynphot Calls for various types of ETC requests.
Table 5 Required SYNPHOT Calls
|
|
Imaging count rate |
Spectroscopic count rate |
Thermal count rate |
Effective Wavelength |
| NICMOS and WFC3/IR Imaging | Source and sky | Yes | Yes | |
|
NICMOS and WFC3/IR (Slitless) Spectroscopy |
Sky | Source | Yes | Yes |
| COS Imaging | Source and sky | No | No | Yes |
| COS Spectroscopy | No | Source[1] and Sky[2] | No | No |
|
Other Imaging |
Source and sky |
No | No | Yes |
|
Other Slitless Spectroscopy |
Sky |
Source |
No | No |
|
Slitted Spectroscopy |
No | No | No | |
|
Imaging with coronagraphy |
Field source, central source, sky |
No | No | Yes |
[1]Extended sources: The source is assumed to fill the aperture. A pixel-wise convolution is applied over the width of the aperture (2.5 arcsec). For purposes of the convolution only, a simplifying assumption is employed - the aperture is assumed to be rectangular. The values for various total counts are corrected for the actual shape
[2]Sky background: A pixel-wise convolution is applied over the width of the aperture (2.5 arcsec). For purposes of the convolution only, a simplifying assumption is employed - the aperture is assumed to be rectangular. The values for various total counts are corrected for the actual shape
[3] If the source is extended, a pixel-wise convolution is applied over the larger of the target width and the slit width (in pixels).
[4] A pixel wise convolution is applied over the slit width in pixels.