Here’s some images from the 22nd, poor seeing as usual. Ganymede is just coming out of occultation. The 03:56.8 image is made from a single RGB set. A hint of detail is visible on Ganymede. The 03:53.9 image is a … Continue reading
Here’s the processings of all my data from the 19th. Conditions, or the telescope, improved with time, as can be seen. (Click to enlarge) … Continue reading
These were taken in pretty poor seeing. R,G,B are 90s runs. I also have some IR shots, but haven’t dealt with them yet. Interesting wave in the NEB(S) which seems to be new, and dark spot near GRS & BA … Continue reading
My first Jupiter images of the apparition, taken about 3 hours before culmination, in poorish seeing. Click to enlarge. … Continue reading
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I’ve just assembled this new montage of images of Saturn from the 2007–8 apparition for publication in a book authored by my friend Dominic Ford. It shows the Opposition Effect, whereby Saturn’s rings become abnormally bright at low phase angle. … Continue reading
These are my first attempts at photographing stellar spectra, encouraged by a suggestion from Jack Martin, who showed me pictures he had taken using a similar grating and camera arrangement. The spectrum is allowed to drift across the camera chip more or less … Continue reading
I’m currently experimenting with the Star Analyser diffraction grating, inspired by Jack Marin, who showed me an amazing high-resolution view of the solar spectrum, with hundreds of absorption lines visible, through his LIRES III high-resolution spectroscope when he visited. Visually, … Continue reading