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Bill Warden
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testing 1-2-3, preparing for the eclipse
testing out my imaging rig for the 8/21/17 total solar eclipse.  there will be a range of exposures so decided to shoot filtered midday sun, twilight moon, full moon.  Here are a few images (click on image for full size): Sun white light filter 2-4-2017 Moo...

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heart of the heart
here's a close up of "the heart of the heart",  dust and gas near open cluster Melotte 15, in the center of IC 1805, the heart nebula (click for full size): in a massive cloud of dust and hydrogen in the constellation Cassiopeia,  the dust began to clump.  ...

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a sharper eye, NGC 6751 in NII Ha OIII
The glowing eye nebula, NGC 6751 really looks like an eye to me, complete with a pupil, iris, and reflected light.  Yes, it's a bit blood-shot: RGB image, 2009 I re-shot the planetary nebula with narrow band filters (nitrogen-red, hydrogen-green, and oxygen...

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fun with a spectroscope, planetary nebula NGC 6886, a tiny saturn nebula
NGC 6886 is a stellate planetary nebula--it's so small it can't be distinguished from a star.  Here's a grey-scale image which basically looks like a field of stars: blinking this with an image using an OIII filter reveals the planetary nebula: it appears t...

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open cluster Messier 29, the pants cluster?
M 29 is an open cluster in cygnus: relatively bright, an easy target for a small telescope or binoculars the 5 brightest stars are B0 giants, 160,000 times brighter than the sun a wider field caught some faint nebulosity  (upper right, click on images below...

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Juno and Winjupos
first kudos to the folks at NASA perhaps a bit of hubris and over the top nationalism but it's a pretty impressive feat they launched the Juno mission to Jupiter in 2011 planning for the deceleration burn to occur as it reached closest approach to Jupiter o...

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solar prominence, the movie: mother of a prom revisited
sent out an image last year of a solar prominence i'd captured : mother of a prom here's an animation from the same day: same time scale as  prior animation post ), but higher resolution, focusing on prominence at edge. Long winded processing notes: i conti...

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monster prom
Interrupting the Jovian parade with a monster solar prominence jutting way off the edge of the solar disk. This one sat on the edge of the sun all weekend teasing me as I didn't have time for a long video time lapse. Eventually got a few 20 second captures ...

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monster prom
Interrupting the Jovian parade with a monster solar prominence jutting way off the edge of the solar disk. This one sat on the edge of the sun all weekend teasing me as I didn't have time for a long video time lapse. Eventually got a few 20 second captures ...

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clown nebula, scientific jelly bean pallet
Narrow band imaging is a technique astronomers use to demonstrate the spatial distribution of specific ion emission lines in an astronomical object (usually nebula).  Rather than using red, green and blue filters (which allow relatively broad wavelengths) t...
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