HeNeAr line solutions using line list hash table?

[jradavenport]

trafficstars

can we do a pattern fit to calibration lamp spectra using line lists?

like a 1-d, kindergarten version of astrometry.net solution ala @davidwhogg & @dstndstn ?

[davidwhogg]

Yes for sure. I think you take sets of three nearby lines and compute the separation ratio (which varies from 0 to 1 and use that as your geometric hash.

[jradavenport]

This was thought up ~20years ago for IRAF. It was a good idea then, and still is now!

[jradavenport]

I started cracking at this, but its just a mess... The beginnings are in the file linehash.py

@migueldvb you might be interested