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This is a wide field image of NGC 7293. A higher resolution image taken with the CDK 20″ has been blended with the wide field image to show more detail in the nebula’s core. This is an image taken only in narrowband and processed mapping the filters to provide the natural color.
Additional Information
Object
Name(s): NGC 7293. The Helix Nebula. Caldwell 63
Type: Planetary Nebula
RA: 22h 29m 38s
Dec: -20º 50’ 18”
Constellation: Aquarius
Size (arcmin): 15×12
Magnitude: +7.6
Distance: 750 ly
Image
Date: 2017-07-05 to 2017-07-21
Location: iTelescope.net, SSO near Coonabarabran, NSW Australia
Size (arcmin): 168×167
Telescope: TOA 130 f/5.7 and Planewave CDK 20” f/6.8
Camera: SBIG STX16803 (4096x4096pix) (in both cases)
Guiding: Astrodon MonsterMOAG off-axis guider
Total exposure: 28.5 hours (Ha: 13h 10m; OIII: 12h 20m; SII: 2h 40m; RGB: 3×12 min each, only stars)
Processing: CCDStack, Photoshop CC 2017