New Images
Interstellar comet 3I/ATLAS in Leo
This inverted image is a composite, showing the position of the comet on 19th, 20th and 21st December 2025. At the time, it was on its way out of the solar system, just beyond the orbit of Mars. It was in southern Leo, near the border with the constellation Sextans. The image shows stars down to Magnitude 15.
Each of the daily stacked luminance images was the result of 15 minutes of remote data capture from Chile, in the form of 1-minute exposures. A ZWO ASI2600MM Pro camera was used, through a Samyang 135 mm lens stopped down to F3.5.
Date: 21/12/2025
Photographer: Graham Wilcock
