M57 - The Ring Nebula

This image of M57 ("Ring Nebula") was taken with a 20 cm (8 inch) Celestron SCT, a F6.3 focal reducer and a ST-6 CCD camera.

Magnitude: 9.0
Time/Date: 00:50:07 May 31, 1997
Exposure Time: 10 seconds
Post Processing: Histogam Modification

This image of M57 ("Ring Nebula") was taken at F10 with a ST-6 CCD camera.

Magnitude: 9.0
Time/Date: 01:06:54 June 25, 1997
Exposure Time: 12.05 seconds
Post Processing: None

This image of M57 ("Ring Nebula") was taken at f10 with a 2X barlow and a ST-6 CCD camera.
M57, the famous Ring Nebula in Lyra, is probably the best known example of a planetary nebula. The term "Planetary nebula" is purely descriptive, implying no connection with planets. Found by the French astronomer Antoine Darquier of Toulouse in 1779. Sir William Herschel in 1785 referred to the nebula as "among the curiosities of the heavens".

Magnitude: 9.0
Time/Date:23:27:33 July 1, 1997
Exposure Time: 30 seconds
Post Processing: Mid Range.

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