
| 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. |