Celestial hemisphere:  Northern  ·  Constellation: Lyra (Lyr)  ·  Contains:  IC 1296  ·  M 57  ·  NGC 6720  ·  Ring Nebula
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M57 "Ring Nebula", Michael Stecker
M57 "Ring Nebula"
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M57 "Ring Nebula"

Getting plate-solving status, please wait...
M57 "Ring Nebula", Michael Stecker
M57 "Ring Nebula"
Powered byPixInsight

M57 "Ring Nebula"

Equipment

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Acquisition details

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Description

M57 "Ring Nebula"
M57 is a planetary nebula in the constellation Lyra.  It is 2,560 light-years from Earth with a brightness of 8.8 and
diameter of 230 arc-seconds.
file: M57-60sX22. Cel925f7P2-6212023a1cr1x.jpg

Photographic Data
telescope:
Celestron 9.25-inch EdgeHD SCT at f/7 (focal length= 1,650 mm)

mount:
ZWO AM5 harmonic/strainwave
Mount Guide Settings in Asiair Plus:
Calibrate Step: 5,000 ms
Dec Duration: 3,000 ms
RA Duration: 2,000 ms
Aggression: 50% for both RA & Dec
Exposure time for guiding: 1 second

Guiding hardware:
SVBony 60 mm f/4 guidescope (fl=240 mm)
Guide Camera: ZWO ASI662MC color planetary camera (2.97 micron pixels)

controller/computer
ZWO Asiair Plus via WiFi to Samsung S7+ tablet
.
imaging camera:
ZWO ASI533MC-Pro one-shot color astro-camera cooled to 14-degrees F with Optolong L-eNhanced nebular filter
.
exposures:
60 seconds X 22 (22-minutes)

processing
Stacked in Asiair Plus and cropped and post-processed in Adobe Photoshop Elements
.
photographic site:
West Los Angeles
http://mstecker.com/pages/chhouses_fp.htm
(Bortle 9 light polluted sky)

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M57 "Ring Nebula", Michael Stecker