Helix Nebula (NGC 7293)
One of the nearest planetary nebulae – low above the southern horizon.
What you get
- Format
- JPEG
- Resolution
- 5 524 × 4 143 px (22.9 MPx)
- Aspect ratio
- 4:3
- File size
- 18.3 MB
- Recommended print size
- 46 × 35 cm at 300 DPI – viewed up close
70 × 52 cm at 200 DPI – framed on a wall
Larger prints are possible but will look softer up close. - Suitable for
- For printing for personal use, or as a desktop or TV background.
- Licence
- Personal, non-commercial use. You may not resell, share or use the file commercially. Terms
- Watermark
- No watermark. If the image carries the author’s signature, so does the file.
- Delivery
- Download link right after payment – on the order page and by e-mail. Valid 7 days, 5 downloads.
About the object
The Helix (NGC 7293) in Aquarius is about 650 light years away, making it one of the nearest planetary nebulae. From Slovakia it climbs only about 20 degrees above the southern horizon, so its light passes through a thick layer of atmosphere. The blue-green centre glows with oxygen, the red ring with hydrogen and nitrogen.
How the image was made
- Captured
- 24 August 2025
- Total exposure
- 1 h 50 min (22 × 300 s)
- Camera
- ZWO ASI2600MC Pro
- Focal length
- 2 759 mm
- Mount
- Celestron (ovládač CGEM/CGX)
- Location
- Banská Bystrica, Slovakia (home observatory)
- Calibration & stacking
- Siril 1.4.0-beta3
- Processing
- Adobe Lightroom 8.5 (Windows)
Data from the original file’s metadata or from the author.