search

desihub / fastspecfit

Fast spectral synthesis and emission-line fitting of DESI spectra.
https://fastspecfit.readthedocs.org
BSD 3-Clause "New" or "Revised" License
13 stars 2 forks source link

consider extending template velocity dispersion grid even higher #164

Closed moustakas closed 7 months ago

moustakas commented 8 months ago

Velocity dispersion fitting fails for 39627764264865286, most likely because the grid of the templates needs to be extended even higher.

fastspec /global/cfs/cdirs/desi/spectro/redux/fuji/healpix/sv3/bright/259/25933/redrock-sv3-bright-25933.fits \
  --targetids 39627764264865286 --debug-plots -o fastspec-39627764264865286.fits

image

Screenshot 2023-12-21 at 10 32 07 PM

Here's another (similar) example:

fastspec /global/cfs/cdirs/desi/spectro/redux/fuji/healpix/sv3/bright/260/26004/redrock-sv3-bright-26004.fits \
  --targetids 39627776201855435 --debug-plots -o fastspec-39627776201855435.fits
moustakas commented 7 months ago

With the ssp-templates (misnamed) branch and a velocity dispersion grid which extends to 475 km/s, 39627764264865286 now looks OK:

Screenshot 2024-01-09 at 8 55 23 AM
moustakas commented 7 months ago

Done in #166.