NGC 7293. The Helix Nebula. Wide Field


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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


Name(s): NGC 7293. The Helix Nebula. Caldwell 63

Type: Planetary Nebula

RA:  22h 29m 38s

Dec: -20ΒΊ 50’ 18”

Constellation: Aquarius

Size (arcmin): 15×12

Magnitude: +7.6

Distance: 750 ly


Date: 2017-07-05 to 2017-07-21

Location:, 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

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