My second star trail shot with the Olympus E5. 25 Nov 2010. The only good thing about the unprecedented cold snap currently gripping the UK is the clear sky opportunities :-) For this shot I used the 12-60mm SWD lens and mounted the E5 on a tripod underneath a clump of trees at the bottom of my field and composed around Polaris (around which the trail spins). IS0 set to 400 opened the aperture as wide as it went (F2.8) and shot 15s exposures continuously all night from approx 7pm to 7am the next morning. Noise reduction was switched OFF. Camera was powered via external using extension lead from garage. To prevent the camera and lens from dewing and freezing over my home made dew shield was used. The following morning I retrieved the camera from a frozen field where temps dropped to -5C. After downloading the 2500 images and running through stacking software the final composite, that you see, was produced.
The image was imported into Aperture with a tiny levels adjustment and removal of some annoying plane light trails. NO noise reduction filter was applied and reduced from the original JPEG size to this one you see with No sharpening.
Star trailstarsnight skyplanetsastronomypolarisOlympusE5Mark Humpage