There was around 20 students with some sort of problem in their marks. I sat in my office to correct their marks or re-evaluate the assignments. It was a busy day. I have Jan 24th for some more students to come and this course will be over after that.
In between, I had time to look on some of the reconstructed spectra. I can definitely tell that the eigenspectra are already corrected for the dereddening.
I will take care of the duplicated spectra soon. may be, I'll wait till I know what to do with dereddening. Now, it will take 10 days to repeat the reconstruction for all objects (we have all the objects and program doesn't need me to check it). so if I have to dereddend the spectra before reconstructing them, I think it is okay, I will repeat them now.
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This is what Yip et al. have applied:
assume standard Rv=3.1
default: O'Donnell's extinction curve in range [3030,9091] angstrom
outside this range, use CCM (1989)
The foreground dust reddening was removed from the QSO spectra using
Schlegel et al. Milky Way dust map. We did not save the dereddened
spectra. The intrinsic reddening was not treated, which in turn would
show up in the PCA mode(s).
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