... radii based on encircled energy fraction the task assumes that the behaviour of the PSF is symmetric about the optical axis ... Furthermore the effect of boresight offsets of the X-ray telescopes are ignored. ...
... To return the unvignetted ARF the source position needs to be forced to be the position of the optical axis. ... This can be achieved by defining it in telescope coordinates. arfgen spectrumset=spectrum.ds withsourcepos=yes sourcecoords ...
... To return the unvignetted ARF the source position needs to be forced to be the position of the optical axis. ... This can be achieved by defining it in telescope coordinates. arfgen spectrumset=spectrum.ds withsourcepos=yes sourcecoords ...
... telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude ... The large scale optical background ( e.g. stray light from the earth) does not come through the telescope's optics and ...
... telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude ... The large scale optical background ( e.g. stray light from the earth) does not come through the telescope's optics and ...
... telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude ... The large scale optical background ( e.g. stray light from the earth) does not come through the telescope's optics and ...
... telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude ... The large scale optical background ( e.g. stray light from the earth) does not come through the telescope's optics and ...
... telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude ... The large scale optical background ( e.g. stray light from the earth) does not come through the telescope's optics and ...
... telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude ... The large scale optical background ( e.g. stray light from the earth) does not come through the telescope's optics and ...
... telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude ... The large scale optical background ( e.g. stray light from the earth) does not come through the telescope's optics and ...