Saturday, February 25, 2017
Yesterday at the IMERSA Summit. Chuck Rau from Seiler Instruments, representing ZEISS in the United States and Canada talked about professional consultant work in our field at the System Matters session and may have triggered a discussion on honest marketing comparing 8k fulldome systems (actually 6.5k) with "true" 8k systems. It should be in the interest of customers and all partners in the industry to market correct numbers, also knowing that resolution is only one point in the spec of fulldome systems. Image quality and good perfomance are depending on many other aspects of hardware and software.
Good to have such meetings to avoid confusions.
Good to have such meetings to avoid confusions.
A solar prominence gathered itself into a twisting cone, then rose up and broke apart in a delicate dance of plasma above the sun (Feb. 20, 2017). The event, observed in a wavelength of extreme ultraviolet light, lasted just about four hours. Prominences are unstable clouds of plasma suspended above the sun's surface by magnetic forces. This kind of event is not uncommon. The brighter area near the bottom of the images is an active region.
Credit: Solar Dynamics Observatory, NASA.
NASA’s Juno spacecraft skimmed the upper wisps of Jupiter’s atmosphere when JunoCam snapped this image on Feb. 2 at 5:13 a.m. PT (8:13 a.m. ET), from an altitude of about 9,000 miles (14,500 kilometers) above the giant planet’s swirling cloudtops.
Streams of clouds spin off a rotating oval-shaped cloud system in the Jovian southern hemisphere. Citizen scientist Roman Tkachenko reconstructed the color and cropped the image to draw viewers’ eyes to the storm and the turbulence around it.
JunoCam's raw images are available at www.missionjuno.swri.edu/junocam for the public to peruse and process into image products.
More information about Juno is online at http://www.nasa.gov/juno and http://missionjuno.swri.edu
Credits: NASA/JPL-Caltech/SwRI/MSSS/Roman Tkachenko
For 360 degrees, a view along the plane of the ecliptic is captured in this remarkable panorama, with seven planets in a starry sky. The mosaic was constructed using images taken during January 24-26, from Nacpan Beach, El Nido in Palawan, Philippines. It covers the eastern horizon (left) in dark early morning hours and the western horizon in evening skies. While the ecliptic runs along the middle traced by a faint band of zodiacal light, the Milky Way also cuts at angles through the frame. Clouds and the Moon join fleeting planet Mercury in the east. Yellowish Saturn, bright star Antares, and Jupiter lie near the ecliptic farther right. Hugging the ecliptic near center are Leo's alpha star Regulus and star cluster M44. The evening planets gathered along the ecliptic above the western horizon, are faint Uranus, ruddy Mars, brilliant Venus, and even fainter Neptune. A well labeled version of the panorama can be viewed by sliding your cursor over the picture, or just following this link.
PARA VER EN HD ABRIR SIGUIENTE LINK
Friday, February 24, 2017
RECOMIENDAN COMER AL MENOS 10 PIEZAS DE FRUTA Y VERDURA POR DÍA UN ESTUDIO INDICÓ QUE SI SE CONSUME EL DOBLE DE LO QUE SE RECOMENDÓ HASTA AHORA SE REDUCEN LOS RIESGOS A SUFRIR VARIAS ENFERMEDADES.
NGC 3621: FAR BEYOND THE LOCAL GROUP Image Credit & Copyright: Processing - Robert Gendler, Roberto Colombari Data - Hubble Legacy Archive, European Southern Observatory, et al.
Far beyond the local group of galaxies lies NGC 3621, some 22 million light-years away. Found in the multi-headed southern constellation Hydra, the winding spiral arms of this gorgeous island universe are loaded with luminous blue star clusters, pinkish starforming regions, and dark dust lanes. Still, for astronomers NGC 3621 has not been just another pretty face-on spiral galaxy. Some of its brighter stars have been used as standard candles to establish important estimates of extragalactic distances and the scale of the Universe. This beautiful image of NGC 3621, is a composite of space- and ground-based telescope data. It traces the loose spiral arms far from the galaxy's brighter central regions for some 100,000 light-years. Spiky foreground stars in our own Milky Way Galaxy and even more distant background galaxies are scattered across the colorful skyscape.
I decided to try if I could photograph the zodiacal light. Early, moonless nights in February and March are the best time to do so. So are fall nights just before sunrise.
I was able to get a faint glow stretching from Venus to Pleiades. Zodiacal light. First time for me.
Thursday, February 23, 2017
Camera: Pentax K-1 in pixelshift mode. Lens: DA*300/4 @ f/4.5 Sensitivity: ISO1600 Exposures: 15X30 sec Stacking: PixInsight v1.8.4 Time of last exposure: 0015 local time, 0815 UTC. Cropped from full frame.
I got a dream.
At this dream i went to catch photos about Zodiacal light-it has been seen even in Finland couple days ago.
Well, it really happen at this time!
Weather was such good, but there was fog in air.
I drove my car on to road.
When i first see that light, i was thinking is that light pollution or what?
Then I realize-it is really Zodiacal light-first time to me!
It was quite strange and beautiful phenom in total darkness.
SEVEN WORLDS FOR TRAPPIST-1 Illustration Credit: NASA, JPL-Caltech, Spitzer Space Telescope, Robert Hurt (Spitzer, Caltech)
Seven worlds orbit the ultracool dwarf star TRAPPIST-1, a mere 40 light-years away. In May 2016 astronomers using the Transiting Planets and Planetesimals Small Telescope (TRAPPIST) announced the discovery of three planets in the TRAPPIST-1 system. Just announced, additional confirmations and discoveries by the Spitzer Space Telescope and supporting ESO ground-based telescopes have increased the number of known planets to seven. The TRAPPIST-1 planets are likely all rocky and similar in size to Earth, the largest treasure trove of terrestrial planets ever detected around a single star. Because they orbit very close to their faint, tiny star they could also have regions where surface temperatures allow for the presence of liquid water, a key ingredient for life. Their tantalizing proximity to Earth makes them prime candidates for future telescopic explorations of the atmospheres of potentially habitable planets. All seven worlds appear in this artist's illustration, an imagined view from a fictionally powerful telescope near planet Earth. Planet sizes and relative positions are drawn to scale for the Spitzer observations. The system's inner planets are transiting their dim, red, nearly Jupiter-sized parent star.
CHUBUT SE CONVERTIRÁ EN UN OBSERVATORIO DE PRIVILEGIO DE UN ECLIPSE DE SOL ANULAR EL FENÓMENO SE DARÁ EL DOMINGO CUANDO LA LUNA SE INTERPONGA ENTRE EL ASTRO REY Y LA TIERRA, FORMANDO UN "ANILLO DE FUEGO"
ECLIPSE SOLAR: ARGENTINA, EL MEJOR PAÍS PARA VER EL FENÓMENO EL "ANILLO DE FUEGO" PODRÁ OBSERVARSE ESTE DOMINGO EN ALGUNOS SECTORES DE LATINOAMÉRICA Y ÁFRICA. LA PROVINCIA DE CHUBUT SERÁ UNO DE LOS ESCENARIOS DE MAYOR PRIVILEGIO PARA DISFRUTARLO A SIMPLE VISTA
Wednesday, February 22, 2017
URSA MAJOR (BIG DIPPER) AND URSA MINOR (SMALL DIPPER) Taken by matthew chin on February 18, 2017 @ Hong Kong
大熊座Ursa Major (Big Dipper)和小熊座Ursa Minor (Small Dipper)
大熊座北斗七星，城市仍肉眼可見，小熊座在光害下肉眼大慨可辨認到北極星 Polaris，和 Kochab。
PARA VER IMAGEN EN HD ABRIR SIGUIENTE LINK
About 7:00 am this morning when sunrise was due low clouds kept it hidden but the sky was spectacular looking out over Lake Superior so I took lots of nice photos.