CDS's Portal.
Code for finding what constellation your object is in. Original code by Nancy Roman (1987), updated for J2000 coordinates http://djm.cc/constellation.html.
Annotation in R with expression.
R color palette
Link to Gaia DR2 form on VizieR.
The arXiv sanity preserver.
Object visibility STARALT.
IRTF spectral library
JPL molecular spectroscopic database
Flexible curve fitting tool
PhotoDissociation Region Toolbox
Radio astronomy temperature summary
Spectral libraries:
* Compilation by VOSA
* Kesseli+2017 BOSS library
* X-Shooter library
* Ca II triplet library
Use sed to strip comments from a LaTeX document.
sed -E '/^[[:space:]]*%/d; s/([^\\])%.*/\1/' yourfile.tex
If you want to also clean up the excess newlines.
sed -E '/^[[:space:]]*%/d; s/([^\\])%.*/\1/' yourfile.tex | sed '/^$/N;/\n$/D'
Energy conversions