scopesim_templates.misc.source_from_imagehdu_with_flux¶
- scopesim_templates.misc.source_from_imagehdu_with_flux(image_hdu=None, filename=None, ext=1, pixel_scale=None, flux=None, bunit=None) Source¶
Create a source from an image where pixel values have known flux and unit.
The units of the flux density expressed by ‘bunit’.
It is possible to change the flux and pixel scale to simulate e.g. more distant objects.
- Parameters:
- image_hdufits.ImageHDU
ImageHDU instance or
- filenamestr
A fits filename.
- extint
Extension where the data and header is located in the file.
- pixel_scalefloat, optional
The pixel scale in arcsec if not in the headers or a different one is needed.
- fluxfloat, u.Quantity, optional
The total flux of the image if the user wants to specify a different one than in the image.
- bunitu.Quantity
The units of flux if BUNIT is not in the headers or a different one is needed.
- Returns:
- srcscopesim.Source