Thursday, July 27, 2017
These three bright nebulae are often featured on telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way. In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula above and left of center, and colorful M20 near the bottom of the frame. The third emission region includes NGC 6559, right of M8 and separated from the larger nebula by a dark dust lane. All three are stellar nurseries about five thousand light-years or so distant. Over a hundred light-years across the expansive M8 is also known as the Lagoon Nebula. M20's popular moniker is the Trifid. Glowing hydrogen gas creates the dominant red color of the emission nebulae. In striking contrast, blue hues in the Trifid are due to dust reflected starlight. The colorful composite skyscape was recorded with two different telescopes to capture a widefield image of the area and individual close-ups at higher resolution.
Wednesday, July 26, 2017
I took this photo during the 10th Brazilian Astrophotography Meeting, held near the city of Padre Bernardo in the central part of Brazil (in the state of Goias). It was taken in July 21st at 07:08pm local time and it is a mosaic of two photos, showing the Zodiacal Light stretching almost vertically from the horizon up past Jupiter. In this time of the year and from that position the ecliptic is almost vertical after sunset. I cloud easily see it because that site is far from major cities, being approximately 100km northeast of Brasilia. Visually the Zodiacal Light was visible almost to the zenith.
Right above the horizon the last glimpse of twilight is visible. Also, the first exposure captured a small flare caused by a satellite, seen to the right og the Zodiacal Light.
You don't have to be at Monument Valley to see the Milky Way arc across the sky like this -- but it helps. Only at Monument Valley USA would you see a picturesque foreground that includes these iconic rock peaks called buttes. Buttes are composed of hard rock left behind after water has eroded away the surrounding soft rock. In the featured image taken in 2012, the closest butte on the left and the butte to its right are known as the Mittens, while Merrick Butte can be seen farther to the right. Green airglow fans up from the horizon. High overhead stretches a band of diffuse light that is the central disk of our spiral Milky Way Galaxy. The band of the Milky Way can be spotted by almost anyone on almost any clear night when far enough from a city and surrounding bright lights, but a sensitive digital camera is needed to capture these colors in a dark night sky.
Tuesday, July 25, 2017
MANTENIMIENTO PLANETARIO CIUDAD DE ROSARIO - POR: GUSTAVO ARIAS /// FOTOS: RAÚL BARONTINI & ESMERALDA SOSA
.. HOY CON NUEVA INSTALACIÓN! ..
.. REINSTALANDO UNA BOCHA DE ESPEJOS QUE SE USABA EN EL AÑO 1988
CUANDO DÁBAMOS LA FUNCIÓN DE PLANETARIO " LA GUERRA DE LOS MUNDOS " ..
CUANDO DÁBAMOS LA FUNCIÓN DE PLANETARIO " LA GUERRA DE LOS MUNDOS " ..
.. entre la nostalgia y los hermosos recuerdos ..
.. ya estará operable en breves ! ..
.. Mil Gracias Raulito por tomar algunas fotos ..
Monday, July 24, 2017
NEW COMET C/2017 O1 ASSSN Taken by rolando ligustri on July 22, 2017 @ from Australia SSO, Itelescope.net
its very bright and very green , easy tu see with a small telescope. DK 500/2250 ccd PL6803 L=9x60sec
Chasing solar eclipses can cause you to go to the most interesting places and meet the most interesting people. Almost. For example, chasing this eclipse brought this astrophotographer to Kenya in 2013. His contact, a member of the Maasai people, was to pick him up at the airport, show him part of southern Kenya, and even agreed to pose in traditional warrior garb on a hill as the hopefully spectacular eclipse set far in background. Unfortunately, this contact person died unexpectedly a week before the astrophotographer's arrival, and so he never got to participate in the shoot, nor know that the resulting image went on to win an international award for astrophotography. Pictured in 2013 from Kenya, the Moon covers much of the Sun during a hybrid eclipse, a rare type of solar eclipse that appears as total from some Earth locations, but annular in others. During the annular part of the eclipse, the Moon was too far from the Earth to block the entire Sun. Next month a total solar eclipse will cross the USA.
A total solar eclipse, which is when the Moon completely covers the Sun, will occur across 14 states in the U.S. on Aug 21, 2017
A total solar eclipse, which is when the Moon completely covers the Sun, will occur across 14 states in the continental U.S. on Aug 21, 2017.
More than 300 million people in the United States potentially could directly view the Aug. 21 total solar eclipse, and NASA wants everyone who will witness this celestial phenomenon to do so safely.
That Monday, a partial eclipse will be visible in every state. A total solar eclipse, which is when the Moon completely covers the Sun, will occur across 14 states in the continental U.S. along a 70-mile-wide (112-kilometer-wide) swath of the country.
It’s common sense not to stare directly at the Sun with your naked eyes or risk damaging your vision, and that advice holds true for a partially eclipsed Sun. But, only with special-purpose solar filters, such as eclipse glasses or a handheld solar viewer, you can safely look directly at the Sun.
NASA recommends that people who plan to view the eclipse should check the safety authenticity of viewing glasses to ensure they meet basic proper safety viewing standards.
Eclipse viewing glasses and handheld solar viewers should meet all the following criteria:
· Have certification information with a designated ISO 12312-2 international standard
· Have the manufacturer’s name and address printed somewhere on the product
· Not be used if they are older than three years, or have scratched or wrinkled lenses
· Not use homemade filters
· Ordinary sunglasses -- even very dark ones -- should not be used as a replacement for eclipse viewing glasses or handheld solar viewers
“While NASA isn’t trying to be the eclipse safety glasses ‘police,’ it’s our duty to inform the public about safe ways to view what should be a spectacular sky show for the entire continental United States,” said Alex Young, associate director for science in the Heliophysics Science Division at NASA's Goddard Space Flight Center in Greenbelt, Maryland. “It’s important that individuals take the responsibility to check they have the proper solar eclipse viewing glasses. With the eclipse a month away today, it’s prudent to practice ahead of time.”
An alternative method for safe viewing of the partially-eclipsed Sun is with a pinhole projector. With this method, sunlight streams through a small hole – such as a pencil hole in a piece of paper, or even the space between your fingers – onto a makeshift screen, such as a piece of paper or the ground. It’s important to only watch the screen, not the Sun. Never look at the Sun through the pinhole -- it is not safe.
NASA has coordinated with medical and science professionals to provide additional safety information. For details, visit:
More than 6,800 libraries across the U.S. are distributing safety-certified glasses. Many are working with scientists to hold viewing events and activities before and during the eclipse. For a listing of participating libraries, visit:
NASA Television is offering a special live program, “Eclipse Across America: Through the Eyes of NASA” with real-time coverage of the event from coast to coast. The nearly four-hour program will include unprecedented images of the Aug. 21 eclipse from numerous spacecraft -- including the International Space Station – high-altitude aircraft and balloons, and ground observations. Each will offer a unique vantage point for the eclipse. Additionally, the broadcast will include live coverage of activities in parks, libraries, stadiums, festivals and museums across the nation, and on social media. To watch the Aug. 21 NASA TV eclipse broadcast online and access interactive web content and views of the eclipse from these assets, visit:
Dwayne Brown / Laurie Cantillo
202-358-1726 / 202-358-1077
firstname.lastname@example.org / email@example.com
Goddard Space Flight Center, Greenbelt, Md.
A girl is enjoying the night sky and stars in Dhu al-Qidah 1st ( the girls day in Iranian Islamic calendar )
Sunday, July 23, 2017
LOS COLORES DEL RÍO Y EL HIPERREALISMO DEL AUTODIDACTA GABRIEL SCHIAVINA AUTODIDACTA, GABRIEL SCHIAVINA CONJUGA EN SU OBRA HIPERREALISTA SOBRE EL PARANÁ UNA TÉCNICA DEPURADA EN AUSTRIA CON EL MEJOR PAISAJE LOCAL. VENDIÓ SU PRIMER CUADRO A LOS 12 AÑOS Y EL MES PRÓXIMO EXPONDRÁ EN NUEVA YORK
Mercury had never been seen like this before. In 2008, the robotic MESSENGER spacecraft buzzed past Mercury for the second time and imaged terrain mapped previously only by comparatively crude radar. The featured image was recorded as MESSENGER looked back 90 minutes after passing, from an altitude of about 27,000 kilometers. Visible in the image, among many other newly imaged features, are unusually long rays that appear to run like meridians of longitude out from a young crater near the northern limb. MESSENGER entered orbit around Mercury in 2011 and finished its primary mission in 2012, but took detailed measurements until 2015, at which time it ran out of fuel and so was instructed to impact Mercury's surface.