I did attempt to fit a TMP36 but it was too big for the gap on the 1100D. No matter. Regardless of where the onboard one is, I had been taking darks and analysing the noise wrt the reported temperature. All that really matters is that I know what to dial up to get good subs. Having the actual temperature and a temperature-controlled solution will be the icing on the cake. Once I have a working camera again