Hi,
Thanks. I’ve only had two really good spectra captured in the 2nd and 3rd orders (one of which appears as the background image for some of the info banners on the BAA page!) so they are rare catches. This one was particularly luck because the Geocentric velocity was low, at just a shade over 21 km/sec. This meant that all the atmospheric lines that light up with faster entries were subdued. That was the only reason it was possible to produce any reasonable plot.
I’m hoping to extend my system with another camera later in the year. Once I get a couple of representative results then I’ll put something together for the Journal.
In the meantime a quick summary will be in the next(?) TA mag.
Cheers,
Bill.
British Astronomical Association
Supporting amateur astronomers since 1890