Tags: HDR Photomatix Canon 40D MIT Massachusetts Institute of Technology Simmons Hall architecture Cambridge MA Massachusetts 12xp Sigma 10-20 10mm hdr at night
Tags: stars night milky way cape cod provincetown p-town
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
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
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