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Jupiter 2012 September 12

Posted on September 13, 2012 by davidardittiSeptember 13, 2012
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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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Gallery

Solar images 2012 September 07

Posted on September 11, 2012 by davidardittiSeptember 11, 2012

This gallery contains 2 photos.

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Image

The Moon, 2012 September 07

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September 10, 2012 by davidarditti
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The Opposition Effect of Saturn

Posted on September 10, 2012 by davidardittiSeptember 10, 2012
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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 →

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First attempts at photographing stellar spectra

Posted on September 10, 2012 by davidardittiSeptember 10, 2012
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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 →

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The Star Analyser

Posted on September 6, 2012 by davidardittiSeptember 6, 2012
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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 →

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