[vsnet-alert 10781] Re re nova in Sgr

[bydra at Safe-mail.net]

Bernard Heathcote advised :-

-------- Original Message --------
From: "Bernard Heathcote" <bd-heath at bigpond.net.au>

> I'm not sure I fully understand the second part of your question but Bill's 0.32nm/pix resolution is theoretically equivalent to a Doppler shift resolution of 146 km/s.<


Ah, thanks a lot!  I believe identification of certain emission lines is "official" diagnostics of novae, but certainly large expansion velocities from Halpha emission profiles are strong circumstantial evidence, and it's great to see amateurs who are capable achieving this at last.  A resolution capability of ~150 and a measure of ~2500 sounds good and solid.

Lovely stuff.

Cheers

John