I was processing this image of Sunspot 1543 when I noticed the rather nice prominence on the edge of the disk. Spicules are almost resolved; it's very tough to image them with the small aperture of the PST and a single etalon.
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The Horsehead Nebula with the Dwarf 3
Here's an image of the Horsehead Nebula captured under my Bortle 8/9 skies. There's 2.38 hours of total integration time, captured i...
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I had a couple of emails asking how to defork an ETX telescope. The ETX 90 and ETX 125 were optically superb scopes, but the mounts left a... -
The clouds melted away last night with a northerly breeze and a clear, transparent sky opened up. As it does not get dark until around 10... -
Like the Ring Nebula, the Dumbbell nebula is a planetary nebula marking the end of a star's life as it puffs off its outer layers into s...
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