Tag: M57 sSpectra

I’ve uploaded a slice of an image showing the spectra of the Ring Nebula (M57). It was taken with the club’s Rainbow Optics 200 lines/mm grating and my 80 mm ED Apogee Refractor. The image duration was 37 minutes taken on 4-14-2026. The ring at zero order is at the bottom and the blue and red ghost images near the top are a result of mainly oxygen (blue) and a combination of Nitrogen and Hydrogen (red).
This from a 3 ” refactor, just imagine what the 27″ Tombaugh can do..
Gary