Ring Nebula, M57 (NGC 6720)

The WIYN 3.5-meter telescope on Kitt Peak took this image of the Ring Nebula on April 2, 2002 in a three-minute exposure aided by the WIYN Tip-Tilt Module (WTTM). This new adaptive optics device helps correct for degradation of the image quality due to atmospheric effects and shaking of the telescope by wind. The image was taken through two filters -- one (red) that isolates the light of ionized Hydrogen (H-alpha at 6563 A) plus singly-ionized nitrogen ([NII] at 6584A), and another (green that isolates the light of doubly-ionized oxygen ([OIII] at 5007 A). The corrected "seeing" in this image is about 0.3 arc seconds (FWHM).

Credit:

C.F.Claver/WIYN/NOIRLab/NSF

About the Image

Id:noao-ring
Type:Observation
Release date:June 30, 2020, 9:34 p.m.
Size:1000 x 1000 px

About the Object

Name:M57, NGC 6720, Ring Nebula
Constellation:Lyra
Category:Nebulae

Image Formats

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94.8 KB
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Coordinates

ObjectValue
Position (RA):18 53 35.13
Position (Dec):33° 1' 44.73"
Field of view:1.83 x 1.83 arcminutes
Orientation:North is 0.3° right of vertical


Colors & filters

BandWave-lengthTele-scope
Optical
Olll
500 nmWIYN 3.5-meter Telescope
Optical
Ha
656 nmWIYN 3.5-meter Telescope
Optical
Nll
658 nmWIYN 3.5-meter Telescope