News & Known Issues

Issue List

MIRI:

• Photometric extraction for MIRI imaging has been updated since the User's Guide was assembled. Rather than a single circular aperture of fixed radius, circular photometric extraction apertures whose radii scale with the filter central wavelength as follows:

  	5.6 micron: 2.2 pixels (0.24 arcsec)
  	7.7 micron: 3.0 pixels (0.33 arcsec)
  	10.0 micron: 3.9 pixels (0.43 arcsec)
  	11.3 micron: 4.4 pixels (0.49 arcsec)
  	12.8 micron: 5.0 pixels (0.55 arcsec)
  	15.0 micron: 5.9 pixels (0.65 arcsec)
  	18.0 micron: 7.0 pixels (0.77 arcsec)
  	21.0 micron: 8.2 pixels (0.90 arcsec)
  	25.5 micron: 10.0 pixels (1.1 arcsec)
  	 

NIRSpec:

• The ETC will produce erroneous results at the endpoint of each bandpass. When running the ETC at these points, adjust your wavelength by a small amount (~0.01 microns) to move it inside the bandpass.