Daniel Fischer

@cosmos4u

All things astronomy and space (and then some) - in tiny bits and pieces but mostly with links to more ... :-)

Photos and Videos by @cosmos4u

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Recognize this celestial object? Just kidding: it's the booster separation of the Delta 4 which lifted off 5 minutes ago.

  • 22 days ago via site
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Another simple image of asteroid (433) Eros, with a shorter focal length setting than http://twitpic.com/8890i4 yesterday: tonight it was only 90 mm 35-mm eq., 10 seconds at f/3.4, with Rho and even Alpha Leonis also in the frame (the arrow marks the asteroid next to two 7.7 and 7.9 mag. stars). Shows that practically every compact camera should *also* be able to follow Eros through its perigee; http://www.skyandtelescope.com/community/skyblog/observingblog/A-Rare-Flyby-of-Asteroid-Eros-137273448.html has good finder charts.

  • 23 days ago via site
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Finally, a wide-angle field around Orion, now at 800 ISO and with a 35-mm eq. fl. of 25 mm (slightly cropped), 30 seconds at f/2.8. With a bright meteor or a fine comet in the field, it would actually be a nice picture ,,,

  • 23 days ago via site
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The main part of Orion in 20 seconds at a 35-mm eq. fl. of 75 mm f/3.3 at ISO 1600 - also tried lower ISO settings for less noise and shorter exposures for less trailing, but it just doesn't look as nice.

  • 23 days ago via site
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Belt & sword of Orion in 6 seconds (259 mm 35-mm eq. focal length f/4 @ 1600 ISO) with a Lumix DMC-FZ48 on a tripod - now the outer reaches of the Orion Nebula come out, too. White balance was set for (terrestrial) sunlight, lacking a better idea. :-)

  • 23 days ago via site
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The crappiest picture of the Orion Nebula you've ever seen - but it was taken without a telescope and without a tracking mount, with the same simple camera as used for http://twitpic.com/88kikv (now just 2.5 seconds exposure time and an equivalent focal length of 735 mm f/5.2 at 1600 ISO). Heavily cropped, of course.

  • 24 days ago via site
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Searching the limit of a 'bridge camera' (i.e. one w/built-in superzoom) for sky photography: this Pleiades picture reaches 10.0 mag. Taken with a Panasonic Lumix DMC-FZ48 at a 35-mm equivalent focal length of 514 mm, 6 seconds with f/4.7 at ISO 1600. Part of a series: strangely, the longer the trails, the clearer the faintest stars come out. Is this because I'm *below* the linear response of the CCD?

  • 24 days ago via site
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Just caught myself asteroid (433) Eros - with a simple camera on a tripod!!! It's the streak on the far right; the 3 bright stars are 7.1, 7.5 and 8.1 mag, the 2 faint ones in the lower left 9.3 and 9.5 mag. 4 seconds at f/4.4 and ISO 1600 with a 35-mm eq. fl. of 460 mm (Panasonic DMC-FZ48). So http://transitofvenus.nl/wp/getting-involved/eros-and-the-solar-parallax in within reach!

  • 24 days ago via site
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Just one image that says it all (kind of) about the #spacekoelsch2 #spacetweetup success in Cologne tonight; many more pictures from the evening and esp. the radio astronomy-heavy day before coming up shortly ...

  • 27 days ago via site
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Since I don't see a press release online re. another #AAS219 press conference item, here's the key picture: a non-observation of SN 2011fe in M101 by the PIRATE telescope on Mallorca drastically restricts the size of the exploding (primary) object to a mere 2% of the solar diameter (vast improvement over Nugent & al. in Nature last month). So it *must* have been a degenerate object, i.e. a white dwarf. (J. Bloom)

  • 30 days ago via site
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Final #AAS219 presser presentation was on the NuSTAR mission - http://www.nustar.caltech.edu - launching this year: here the resolution of its high-energy telescope is compared to INTEGRAL's.

  • 31 days ago via site
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Astronomers answering to the Universe: the panel of the first #AAS219 press conference in Q&A, with Rick Feinberg in charge.

  • 32 days ago via site
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Conclusion slide from the 1st #AAS219 press conference: You can determine the dark matter distribution of a galaxy by watching the effects the gravity of a companion causes - a method complementary to using gravitational lensing.

  • 32 days ago via site
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The key players in unraveling the history of the Universe as compiled by S. Perlmutter in his final #Hawking70 slide.

  • 33 days ago via site
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So is science going to save us ... or to destroy us? Interesting juxtaposition of tweets in my timeline today. :-)

  • 35 days ago via site
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Final impression of the Herbede fireworks tonight (they're still at it) - fog allowed only wide-angle shots this time.

  • 41 days ago via site
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Another experimental picture of tonight's New Year's fireworks in Witten-Herbede, Germany.

  • 41 days ago via site
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Happy New Year (in the Central European time)! Fireworks over Witten-Herbede, Germany.

  • 41 days ago via site
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The last we saw of the Soyuz with the Globalstar satellites after lift-off 10 minutes ago in Baikonur - then it vanished in low clouds for good. Telemetry says all's well so far.

  • 44 days ago via site
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The Soyuz crewmembers, now in orbit, have already learned that notebook pages behave quite differently in µg - perhaps tablet computers next time? :-)

  • 51 days ago via site
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