Low Resolution Spectrum

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#579411
Mike Harlow
Participant

I managed to get a ‘quick look’ spectrum last night as the clouds parted and before the nova went behind a tree!

I used my 4.5 inch F/5 Newtonian with a 12 degree objective prism to image a 2.5 x 1.3 degree field containing the nova.  It stands out clearly from the other stars in the field.  Even with my un-modified Canon 550D DSLR the red H alpha emission is clear and explains the red colour of the nova seen in other images.

The bright star at top right is mag. 5.6 SAO39688, spectral type A0, showing H beta and H gamma lines.