Look at the bright star near the left border of the photo: Spica. From a distance you will see a brightening around this star.
This brightening is the Gegenschein, sunlit scattered by interplanetary dust at the antisolar point.
The Gegenschein is really difficult to spot, you need a clear moonless night and the help of a camera, in my photo battling some light pollution it is faintly visible.
Knowing that the antisolar point was near Spica at the time the photo was taken helped a lot.
Tags: wide wideangle gegenschein milkyway milky way galaxy antisolar scattering dust optics optiscapes nightscapes night sky astronomy astrophotography spica bulge galactic may 2013 may2013 2013-05-11
An ultra thin waning crescent Moon only one day before new Moon distorted by the atmosphere. It looked really strange to the naked eye.
Tags: 1day astronomy astrophotography atmosphere atoptics crescent distorted distortion may may2013 moon optics optiscapes river snake waning
A strong display of airglow just above the waters of Rio de La Plata with the Milky Way rising above.
Airglow is produced by chemiluminescence in the high atmosphere and, contrary to the aurora,it can be seen all over the world. It's usually not visible to the naked eye and always looks green in photos.
Tags: airglow milky way river clouds green atmosphere optics atmospheric optiscapes night nightscapes 2013 2013-03-16 March March2013 astronomy scorpius antares riodelaplata sky nightscape
The full moon from January the 9th rising above Rio de La Plata as seen from Buenos Aires, Argentina.
The red color and the distorted look is produced by Earth's atmosphere as the moon was very low in the East.
Taken with a 1500mm lens and stitched from 5 shots (91mpx).
Tags: moon moonscape fullmoon full january wolf wolfmoon water river red atmosphere optics argentina january2012
As the 2013 SuperMoon rises over Rio de La Plata a 22 degrees lunar halo is formed. Moonlight is reflected and refracted on ice crystals to produce this beautiful display. Moonlight is also reflected on the water.
Tags: 2013 2013-06-22 2013supermoon 22degrees argentina astronomy astrophotography atmospheric color fullmoon halo june june2012 moon moonscapes optics optiscapes puntapiedras reflection riodelaplata river superhalo supermoon