salvaged data14 Aug 2018
Here’s something fun: around 10 years ago, my family went to Cape San Blas, FL for a week. I was just getting into photography – I had a Canon 20D, a wide angle lens, and no idea what I was doing. But the views of the Milky Way from the beach were spectacular. I tried taking some long exposures, but between the noise of my relatively old crop sensor and the heat, the results were riddled with noise and hot pixels. I gave up and never posted any of the shots I got that night.
Skip forward ten years, and here I am playing with astrophotography and learning all about image stacking. It occurred to me I might be able to salvage the original data. I had the 10 original raw images and I gave it a whirl. I was stunned by the results!
On the left is an example of an uncorrected frame I got that night. On the right, the result of stacking & cleaning up. Modern software is pretty cool.
- Camera: Canon EOS 20D
- Lens: EF-S 10-22mm (shot at 10mm)
- ISO: 3200
- Aperture: f/3.5
- Shutter Speed: 30”
- Total Exposures: 10
- Software: DeepSkyStacker for stacking, darktable for levels correction & post-processing.