[yt-users] psf convolution

Does anyone know a way to convolve a yt image (preferably pc.add_projection) with a telescope psf? This would be useful for simulated observations. At the moment, the best I can do is make an image in yt and then convolve that image in pixel space, but this ends up blurring out things I do not want blurred (like particle markers, or velocity arrows). The psf does not need to be fancy, I just want a 2D gaussian with an adjustable width. Ideally, there would be a call pc.add_projection("Density", 0, psf_width = 1.5e13) #create a projection with a psf width of 1 AU at the observed distance Charles