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Object Info
Objects NGC7293 - The Helix nebula
Type Planetary Nebula IV + III
Centered at: RA: 22:29.6 DEC: -20:48
Constellation Aquarius
Magnitude 7.3
Size 2 light years
Distance 425 light years (the closest planetary nebula to us)
Age ?
Dimensions > 13 arcminutes
Image Field 102'09" x 68'82"
Notes Schuler 10nm Hydrogen Alpha and William Optics Minus Violet filters used.
Taken from: Tin Shed Observatory
Gold Coast, Queensland
Long - Lat = 153:23.54E - 27:56.8S
On: 27th July 2003



Image Info
Telescope Synta 102mm f5
Focal Length 500 millimetres
Telescope guiding Guided by ST5c on C11@f10 (2800mm)
Telescope control Astrometric Sky Walker II
CCD camera SBIG ST-10xe
Camera cooling Regulated Thermoelectric
Camera pixels 2184 x 1472 x 6.8um
Image scale 2.8 arcseconds per pixel
Processed with: Mira A/P, Maxim DL, AIP4Win, CCDSharp, Photoshop
Exposure times Ha = 105 minutes taken as 5-minute unbinned subimages.
Image Calibrations All sub-images Dark Subtracted, Flat Fielded.