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M57 The Ring Nebula   © Ken Crawford      Rancho Del Sol Observatory  MPC G67
Image Exposure Details
Filter Exposures
Clear/ Lum 0 minutes
Red 50 minutes
Green 50 minutes
Blue 50 minutes
Ha 900 minutes
OIII 960 minutes
SII 240 minutes

M57 - The Ring Nebula is a famous result of a dying star. This very deep image also reveals a possible outer halo surrounding the main planetary nebula and it's known "petal" like gas shells. These very faint structures are revealed with an Astrodon OIII 3nm filter - Apogee u16m and 16 hours of exposure.
RCOS 20" carbon truss - 100mm FFC
Paramount ME
Apogee Alta u16803
SBIG ST402 Guider
Astrodon MegaMoag
Astrodon 50mm Sq Filters
MaxDL 5
CCDAutopilot 5
Photoshop CS5
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The Ring Nebula details revealed with over 37 hours of total exposure time. See the WISE IR Data prcessed and overlaid to this image by Teri Smoot.

These images may be used for personal or educational use without contacting me. But, these images and this website are Copyright © Ken Crawford. If you are a publisher and would like a full resolution link to this or other images please contact Ken Crawford.

Mouse over
to see the OIII structures of the possible outer halo of M57.