British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

Home Forums Spectroscopy
Terms of use

Flux calibration

1 post / 0 new
k.gurney's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 08/01/2016 - 18:58
Flux calibration

I  recently tried flux calibration of an Alpy spectrum using David
 Boyd's method. I had acquired my own photometry for the target with a
 view to bring the two data sets together in this way...

I started to read a bit more about flux and magnitudes etc and
disappeared down a rabbit hole... :) Flux can be a counting concept
(photons, electrons, ADU) or energy-based. The relation between the
two is given by the Planck–Einstein relation (E = h c / lambda) and so
they are not directly comparable....

However, in obtaining the instrument response using a MILES star, it seems we come good in the end.

I attach a brief analysis that I hope sheds some light!

Kevin

Attachments: 
AttachmentSize
PDF icon BAA_forum.pdf737.91 KB