Saturday, November 18, 2017
This morning a beautiful conjunction with the Moon, Venus, and Jupiter, with the friends of the Treviso Astronomy group.
Canon 760D, 24-105 L, ISO 100, 1.3 sec,
This morning in Finnish Lapland, the air was filled with ice crystals, and the temperature was about -17°C (1.4°F).
I was driving toward the north there at 68°N. First I was driving in quite thick fog, until suddenly a big fog bow appeared in front of me. I looked back, and the low sun seemed to want to amaze me.
I knew of a large hill that would allow me to drive above the cloud/fog bank, and while doing that I saw:
- first a very distinctive sun halo with a sun pillar. At some point, the halo was double, but there was nowhere to stop safely.
- further up, opposite to the sun, I saw my own shadow in a glory, surrounded by a fog bow
- and best of all, in the direction of the sun, the brightest sundogs that I have ever seen (they were as bright as the sun itself), and even what I believe is an upper tangent arc.
This fully compensates my frustration of not seeing any Auroras upon my arrival a few hours earlier!
Friday, November 17, 2017
TALLER DE INTRODUCCIÓN A LA OBSERVACIÓN SOLAR 2017 //// EN OBSERVATORIO ASTRONÓMICO ROSARIO - ARGENTINA - FOTOS: ESMERALDA SOSA
The sky glows with soft pinkish colors of fading twilight in this serendipitous mountaintop vista. Taken in subfreezing temperatures, the thoughtfully composed photo shows snowy, rugged peaks seen from a mountain pass on November 14. Below lies the village of La Villa, Alta Badia in Italy's Dolomite Alps. Above the nestled village lights, the constellation Ursa Major hangs over the northern horizon. But most stunning is the intense fireball meteor. It was captured during the camera's exposure by chance as it flashed east to west across the northern horizon, under Ursa Major's familiar Big Dipper asterism. In fact, sightings of this major fireball meteor were widely reported in European skies, the most reported fireball event ever for planet Earth's American Meteor Society and the International Meteor Organization. The meteor's measured track over Germany is consistent with its origin near the active radiant of November's Taurid Meteor Shower. Taurid meteors are associated with dust from Encke's comet.
Thursday, November 16, 2017
The Tarantula Nebula is more than a thousand light-years in diameter, a giant star forming region within nearby satellite galaxy the Large Magellanic Cloud, about 180 thousand light-years away. The largest, most violent star forming region known in the whole Local Group of galaxies, the cosmic arachnid sprawls across this spectacular view composed with narrowband data centered on emission from ionized hydrogen and oxygen atoms. Within the Tarantula (NGC 2070), intense radiation, stellar winds and supernova shocks from the central young cluster of massive stars, cataloged as R136, energize the nebular glow and shape the spidery filaments. Around the Tarantula are other star forming regions with young star clusters, filaments, and blown-out bubble-shaped clouds. In fact, the frame includes the site of the closest supernova in modern times, SN 1987A, right of center. The rich field of view spans about 1 degree or 2 full moons, in the southern constellation Dorado. But were the Tarantula Nebula closer, say 1,500 light-years distant like the local star forming Orion Nebula, it would take up half the sky.
MOONBOW UNDER THE AURORA BOREALIS Taken by Giuseppe Petricca on November 7, 2017 @ Stornoway, Eilean Siar, Scotland
A Moonbow under the Aurora Borealis!
Surely, a show that will remain in my memory, a week ago, on November 7th. Between fast moving clouds, rain showers which lasted no more than two or three minutes, this fantastic moonbow appeared, when the almost Full Moon managed to break the clouds.
On the right, a magnificent aurora borealis, fighting with a portion of starry sky in which we can easily recognize the stellar summer triangle, almost at its setting.
I could continue on and on to describe this view, but I think that the picture will do it way better. An unforgettable emotion!
Manfrotto MK055XPRO3-3W - Canon EOS 700D - Samyang 14mm f2.8 - Lightroom CC - Photoshop CC
COMET PANSTARRS (C/2015 ER61) NEAR ARIES MOLECULAR CLOUDS Taken by Yasushi Aoshima on November 12, 2017 @ Ishikawa, JAPAN
What a great comet! It still has over 60′ long tail...
Many comet fans may forget about this comet. Because a bunch of magnitude farecasts tells its already very dark. But actually it has not faded out yet, and still has long tail. Lucky for you, the earth will go across the orbital plane of this comet in this moonless weekend. So you have a chance to catch a longer dust tail, if you will get a clear sky. Data: EF300mmF2.8L USM, CanonEOS6D, 12800 ISO, 87x60sec stacked (11:14-12:43 UT), FOV: 4.7 x 7°, North: left
Wednesday, November 15, 2017
Found among the rich starfields of the Milky Way, star cluster NGC 7789 lies about 8,000 light-years away toward the constellation Cassiopeia. A late 18th century deep sky discovery of astronomer Caroline Lucretia Herschel, the cluster is also known as Caroline's Rose. Its flowery visual appearance in small telescopes is created by the cluster's nestled complex of stars and voids. Now estimated to be 1.6 billion years young, the galactic or open cluster of stars also shows its age. All the stars in the cluster were likely born at the same time, but the brighter and more massive ones have more rapidly exhausted the hydrogen fuel in their cores. These have evolved from main sequence stars like the Sun into the many red giant stars shown with a yellowish cast in this lovely color composite. Using measured color and brightness, astronomers can model the mass and hence the age of the cluster stars just starting to "turn off" the main sequence and become red giants. Over 50 light-years across, Caroline's Rose spans about half a degree (the angular size of the Moon) near the center of the wide-field telescopic image.
Tuesday, November 14, 2017
ZEISS has received an order to furnish a UNIVERSARIUM Mark IX planetarium with LED illumination for the new Science Dome of Heilbronn‘s experimenta, the biggest Science Center of its kind in southern Germany. On a floorage of 6,500 m², experimenta visitors can explore a multiplicity of themes and exhibits in the science and technology fields. By 2019, the Science Center will open a spectacular new five-story building with an annexed Science Dome for special experiences. The dome will feature quite a number of extras, such as a rotating auditorium, water screen, concert stage and movie screen, which promise unique experiences to future viewers. Realistic demonstrations of the night sky will be provided by the optical-mechanical UNIVERSARIUM Mark IX star projector. Illuminated by cutting-edge LED technology, the projected stars fascinate by their brilliance and absolutely white brightness. The projector will be specially adapted to meet experimenta requirements.
We came across an oddity this week that our spacecraft has rarely observed before: a dark filament encircling an active region (Oct. 29-31, 2017). Solar filaments are clouds of charged particles that float above the sun, tethered to it by magnetic forces. They are usually elongated and uneven strands. Only a handful of times before have we seen one shaped like a circle. (The black area to the left of the brighter active region is a coronal hole, a magnetically open region of the sun). While it may no major scientific value, it is noteworthy because of its rarity. The still and video clip were taken in a wavelength of extreme ultraviolet light.
Credit: Solar Dynamics Observatory, NASA.
Monday, November 13, 2017
.. 5am ..
PARA VER EN HD ABRIR SIGUIENTE LINK
.. 9.40pm ..
PARA VER FOTOS EN HD ABRIR SIGUIENTE LINK
.. 10pm ..
.. Magnitud Visual de NEPTUNO 7.84 ..
.. a unos 4364 millones de kilómetros de la Tierra ..
ESTRELLAS EN LA FOTO DE NEPTUNO
1-TYC 5813-553-1 MAGNITUD VISUAL 10.473
2-HD 216430 MAGNITUD VISUAL 9.627
3-HD 216440 MAGNITUD VISUAL 9.351
4-TYC 5813-236-1 MAGNITUD VISUAL 10.421
5-LAMBDA AQUARII ( HYDOR ) MAGNITUD VISUAL 3.74
6-HD 216566 MAGNITUD VISUAL 9.321
7-HD 216662 MAGNITUD VISUAL 9.605
PARA VER IN HD ABRIR SIGUIENTE LINK
.. 04-09-2017 ..
.. entre las 11.30pm y la 1.30am ..
Info: Licenciado en Física Jose Luis Lomáscolo... Gracias Cachitus !