Monthly Archives: February 2013

The Meme Must Die

I can’t claim not to have repeated this one a few times myself in the past, but I know better now and I’m seeing it regurgitated so often that it’s time to make a stand. Much of my knowledge of … Continue reading

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Examples of DSLR Exposure Times for Lunar Imaging

I was struggling a few days ago with some images I’d taken of the Moon because they looked really poor after stacking and sharpening. I’d been experimenting, trying to get a better histogram fill for the images by increasing the … Continue reading

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Mounting a DSLR on a Telescope Mount

Someone was asking how they could mount their DSLR on a telescope mount such as an EQ3-2 or EQ5. I do this for my wide field images. Here’s how. I have a short dovetail (about 15cm) to which I have … Continue reading

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New Kid on the Block: The ASI120MC

I’ve been pondering on a dedicated planetary imaging camera for a while. The SPC900 is exceptionally good for what it is, especially as I paid only £5 for mine, but being USB1 the frame rate is limited to 10 fps … Continue reading

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Red Dot Rifle Sight as a Finder

One of my RDFs died recently. It seems to be something they do. Anyhow, I had a red dot rifle sight sitting around doing nothing, so I removed the mount from the RDF and cut a plate from a bit … Continue reading

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A Short “Great Red Spot” Animation

From the same night (just a little later) as my previous Io transit images, watch the GRS as Jupiter rotates:

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Io’s Transit of Jupiter, 11 December 2012

Ganymede and Europa are “in the bag”. Catching Io here means there’s only Callisto left. Of course I didn’t catch the whole transit for the first two so I shall be revisiting that next apparition. And an animation of the … Continue reading

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Europa’s Transit of Jupiter, 29 November 2012

Having managed to catch some of Ganymede’s transit the previous day, it was then Europa’s moment of fame, though again I didn’t manage the entire transit: And an animation of the end of the transit:

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Ganymede’s Transit of Jupiter, 28 November 2012

On the 28th November I (pretty much accidentally) caught the transit of Jupiter by Ganymede. Here’s one of the better stills from that night: And an animated sequence of first half of the transit:

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