British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

Home Forums Spectroscopy
Terms of use

Auroral light pollution

4 posts / 0 new
Last post
Robin Leadbeater's picture
Offline
Last seen: 3 hours 42 min ago
Joined: 05/03/2014 - 00:50
Auroral light pollution

A strong green auroral line in the ALPY 200 spectra tonight at 20:00 UT.  The left of the two strong lines, matching the local NaD line (right) for intensity, even with the target due south. (The very strong "line" on the far left is the zero order slit image)

The target is a follow up of my latest supernova classification sn2017htb  (1a 91t-like)

Robin

Grant Privett's picture
Offline
Last seen: 3 hours 43 min ago
Joined: 28/12/2014 - 18:30
Aurora

How far north are you?

Full cloud here :)

djswan2002's picture
Offline
Last seen: 1 hour 17 min ago
Joined: 20/04/2017 - 19:58
Weather

Quite. Perhaps, Robin, you should reveal to Eric Watkins where in the UK this astro-friendly micro-climate exists. David 

Robin Leadbeater's picture
Offline
Last seen: 3 hours 42 min ago
Joined: 05/03/2014 - 00:50
clear sky

North West Cumbria.  Clear skies are like hen's teeth around here and once again have coincided with near full moon :-(

I did not notice any aurora visually, though there was a photo on the local weather showing it low in the north.  The spectrograph is very sensitive to this line though which is always present at  a background level even when there is no aurora.

Robin