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User / nd-nʎ
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Tags:   HDR Photomatix Canon 40D MIT Massachusetts Institute of Technology Simmons Hall architecture Cambridge MA Massachusetts 12xp Sigma 10-20 10mm hdr at night

N 5 B 8.8K C 3 E Nov 18, 2009 F Nov 18, 2009
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stacked lenses for macro photography. a reversed EF 50mm F/1.4 is attached in front of a Sigma 70-300mm F/4-5.6 using a 58-58mm macro coupling ring. Working distance is about an inch. This goes up to 6:1 in magnification.

Tags:   macro macro coupling ring coupling ring reversed lens 6:1 6:1 macro closeup EF 50mm F/1.4 Sigma 70-300mm F/4-5.6 300mm micro lens coupling Canon 40D macro coupler 對接環 對接 鏡頭對接 微距

N 9 B 2.4K C 1 E Jan 18, 2015 F Jan 17, 2015
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Comet C/2014 Q2 Lovejoy passing as close as 8° to Pleiades. Taken at McDermott Court at MIT.
Camera settings: 50mm F/1.4 lens @ F/2.2, 2 sec. per frame, 682 frames, ISO 1250. Stacked with 54 dark, 30 flat, 64 dark flat, and 100 offset frames subtracted.
Stacking settings: comet stacking, average mode, center 50% cropped, 2x drizzle.

Tags:   Comet comet C/2014 Q2 comet lovejoy lovejoy photo stacking DeepSkyStacker DSS astrophotography astronomy Pleiades M45 Messier 45 star cluster open cluster Taurus 昴宿 昴宿星團 七姊妹星團 彗星 Astrometrydotnet:id=nova978714 Astrometrydotnet:status=solved

N 5 B 4.8K C 1 E Oct 17, 2012 F Oct 17, 2012
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another shot of our neighbor galaxy M31 using 514 light frames (42m50s total exposure time). taken in Cambridge, MA with 70mm F/4.0, cropped 1:3, and processed with 2x drizzle.

Tags:   Andromeda Galaxy Andromeda galaxy M31 Messier 31 Canon EOS 40D 70mm Sigma 17-70mm f/2.8-4 DeepSkyStacker photo stacking astrophotography NGC224 Great Andromeda Nebula 仙女座星系 仙女座星雲 仙女座 星系 奎宿 Astrometrydotnet:version=14400 Astrometrydotnet:id=alpha-201210-95271195 Astrometrydotnet:status=solved M110 Messier 110 NGC205


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