Towards lensing template
Sept 28 2018, Clem Pryke
Back in February I made nside=2048 sim maps including noise and foregrounds suitable for lensing reconstruction - see here.
The plot below compares the maps and first derivs. The reconstructions are after subtracting mean field and Weiner filter. The "ideal" are have means subtracted. Clearly the derivs are all very similar.
In BK analysis we have been calling the difference of the lensed and unlensed maps the "lensing template". We can make this by taking the observed lensed map, de-deflecting it, and taking the difference. BK pipeline has been doing this flat-sky but for S4 we need curved-sky version. The plot below shows first steps towards implementing. (This is for ideal phi map.)