In the previous post, we noticed that the VE1 and IRCUT filters have very similar profiles to the V band — at least for the data we obtained pointing at Arcturus.
Here we show a colour map (V-VE1, on an arbitrary magnitude scale: properly calibrated colours will come later).
It’s clear that the deep artifacts around the edge of the moon are much smaller now, compared to the B-V colour maps we have been producing to date.
Data used:
2456015.7558321MOON_V_AIR_averaged.fits 2456015.8108611MOON_VE1_AIR_averaged.fits
This shows that the core of the PSF of the V and VE1 filters are quite similar — and the power law tails as well — not just for Arcturus but for lunar images too.
I think so too — had the same thought — although I think it could get technically tricky in practice. It would be great to talk to some deconvolution person about the 2-D deconv, working from mock lunar images (say). Actually I’d like to give that a try myself, hope to in the next few days…
Super test, actually! Could one devise some way of generating psfs from the requirements of certain image differences?