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M57 spectroscopy, 



M57 spectroscopy

Technical card

Dates:May 20, 2018

Frames:Astronomik RGB 27mm Deep Sky: 9x180" -20C bin 1x1

Integration: 0.5 hours

Darks: ~40

Flats: ~15

Bias: ~50

Avg. Moon age: 5.60 days

Avg. Moon phase: 31.52%

Temperature: 13.00

Basic astrometry details job: 2069199

Resolution: 3365x2564

Locations: Garden, Bremen, Bremen, Germany; Achim near Bremen, Achim, Niedersachsen, Germany

Data source: Backyard


This is a spectroscopic image of M57. The picture shows the line emissions at h-alpha, OIII and h-beta on the left side of the order zero image. The resolotion is not great due to the relatively fast telescope (TS 65q f/6.5) which is not ideal for the used Baader 1 1/4" Blaze Grating Spectroscope (207 lines/mm).
The gaps in the star spectra are caused by the filter transmission functions of the used Astronomik RGB filters.
The inset shows a picture of M57 shot on May 9th with a C8 during a star session at my colleague and friend in Achim close to Bremen.



License: Attribution-NonCommercial-NoDerivs Creative Commons


M57 spectroscopy,