Galaxy Z Fold 4 gains astrophotography mode with Expert RAW update

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Samsung Galaxy S23 astrophotography

Dhruv Bhutani / Android Authority

TL;DR

  • The Samsung Galaxy Z Fold 4 is now getting an astrophotography mode through the updated Expert RAW app.
  • The mode was first introduced on the Galaxy S22 series.
  • It enables you to take high-quality, long-exposure images of the night sky.

If you have the foldable phone, you should be able to use the astrophotography mode with Samsung’s updated Expert RAW app. For those unfamiliar with Expert RAW, it’s Samsung’s advanced camera app for Galaxy phones. You can download it from the Galaxy Store. The app will inform you that an update is available when you open it. The Galaxy Z Fold 4 supports astrophotography with Expert RAW version 2.0.09.1.

Samsung introduced astrophotography mode with the Galaxy S22 series and then brought it over to the Galaxy S23 series. The feature enables you to take high-quality, long-exposure images of the night sky, provided you have a clear view. The constellation overlay function also helps locate nearby stars and celestial bodies.

According to Samsung, astrophotography follows a six-step process — celestial search, composition settings, camera settings, continuous shooting, compositing, and post-editing.

The company is also expected to roll it out to older phones like the Galaxy Z Fold 3, Z Fold 2, and the Galaxy S20 series.



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what to shoot in the night sky this coming month

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© Getty Images
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For those in the northern hemisphere, May is the last month until September when the night sky gets properly dark after sunset. It also brings your best last chance to grab a post-sunset photo of Venus high in the sky and, if you time it precisely, close to a slender crescent moon.

• Make sure you’re using the best lenses for astrophotography

Add some wonderful deep-sky objects, the rise of a full ‘Flower Moon’ – eclipsed from some parts of the world – and good views of the Milky Way, and May 2023 will be a great month to get outside with your camera.

Friday, May 05: a full ‘Flower Moon Eclipse’

A full moon is always a monthly highlight for anyone interested in photographing the night sky, but for some parts of the world, it’s accompanied by something rarer. From Africa, Asia and Australia, but also from parts of Eastern Europe, a penumbral lunar eclipse will occur. 

This is when the full moon drifts through Earth’s fuzzy outer shadow for a few hours, which causes it to be significantly duller. It’s not as photogenic as a total lunar eclipse – also called a ‘Blood Moon’ – but the lack of brightness does make it a great time to photograph the full moon without the usual glare. 

This lunar eclipse will be inaccessible to many, but wherever you are you can capture the rising full moon. Just check your local moonrise time and be on time at a location with a good view low to the eastern horizon. Don’t forget to bring a 70-300mm lens, a tripod and a remote shutter release. Here’s more on how to photograph the full moon.

Saturday, May 06: Eta-Aquarid meteor shower 

Best seen just after midnight early on May 06 is this annual meteor shower caused by Halley’s comet. Dust and debris left in the inner solar system by the most famous periodic comet will strike Earth’s atmosphere to cause a maximum of 60 ‘shooting stars’ per hour, according to the American Meteor Society. The Eta-Aquarids is a stream of material that Earth busts through between April 19 and May 28 each year, but it’s the peak night that brings the most activity. 

The ‘shooting stars’ will appear to come from the constellation Aquarius, but can appear anywhere in the night sky, so a wide-angle lens is a must. Photographers in the southern hemisphere will get the most shots of meteors, though since the moon will be full across the world, only the very brightest ‘shooting stars’ will shine through. Find out more on how to photograph a meteor shower.

Friday, May 12: May’s ‘Milky Way window’ opens

Last Quarter (or Third Quarter) Moon today sees our satellite half-lit and rising after midnight. It will rise about 50 minutes later each night for the next week, which leaves the skies dark for deep-sky astrophotography and, for the first time in 2023 for those in the northern hemisphere, good views of the brighter core of the arc of the Milky Way. 

Look for its soft glow close to the eastern horizon after dark during May. Your latitude makes a huge difference, so make sure you check the best time to see the Milky Way where you are. 

Wednesday, May 17: Occultation of Jupiter by the moon

A 6% waning crescent moon will, just before dawn today in the eastern sky, move across to block Jupiter – though only as seen from Canada, the contiguous US, Mexico, Greenland, northern Scandinavia and the northern UK. Here are the details and timings for that event, which can be customized to your location. The shot to go for is Jupiter’s disc just alongside the crescent. 

If you’re not in the path of this occultation then a shot of a very slim crescent moon very close to Jupiter will also be something special. Even for those in the path, the re-emergence of Jupiter will take place in a much brighter sky, so it will not only be more difficult but won’t be as picturesque because it will be next to the dark limb of the moon. You must take care not to point a camera lens anywhere near the sun. To be safe, avoid the optical viewfinder, relying only on the electronic screen on the back of your camera.

Saturday, May 20: Deep-sky astrophotography

With the moon roughly between the Earth and the sun, it’s completely absent from the night sky. This makes tonight (and, practically speaking the few nights on either side) a great time for a long session outside capturing faint nebula, star clusters and galaxies. Here is a handful that pass roughly overhead (so in the darkest patch of the night sky) this month…

Sunday, May 21 to Tuesday, May 23: A crescent moon and Venus

Nightscapers will love May 21’s alignment of a 6%-lit crescent moon with Venus (and a more distant Mars) in the post-sunset night sky. The following evening the 11% crescent moon will be even closer to Venus while on May 23 an 18%-lit crescent moon will sit gloriously between Venus and Mars, with the stars of Gemini just above. 

Each evening it will be possible to capture ‘Earthshine’ on the moon – sunlight reflected from Earth onto the lunar limb. Wide-angle lenses in particular are good at picking-up Earthshine without any special settings. Just be sure to capture in raw to make post-processing easier. Here you can learn when to photograph the moon.

Wide-angle shot of the month: the Eta-Aquarids meteor shower

‘Shooting stars’ move fast, and during the Eta-Aquarids meteor shower they move super-fast. Achieving a whopping 148,000 mph as they strike Earth’s atmosphere, according to NASA, you’ll need a camera taking long exposures for several hours if you’re to catch any of the predicted bright ‘trains’ – material that glows for a second or so in the meteor’s wake. 

It’s important to have a wide-angle lens (14-16mm works best), a tripod, a fast aperture (f/2.8 or lower) and a high ISO setting (ISO800 or more if you have a full-frame camera). Take a series of 30-second exposures for a few hours from midnight and you’ll stand the best chance of capturing some ‘shooting stars’. 

However, you will need a clear sky, so keep an eye on weather forecasts, though with the full moon coinciding with the Eta-Aquarids meteor shower this year there’s no need to go looking for a dark sky – they don’t exist during this moon phase. This is a project for your backyard! 

Interested in finding out more about photographing the sky at night? You can get more information in our guides to the best cameras for astrophotography, and the best low light cameras.

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Astrophotography for beginners: How to shoot the night sky

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This astrophotography for beginners guide is designed to help you get started photographing the night sky. The subject of astrophotography — taking photographs of the night sky — is such a broad one with so many subcategories that it’s hard to know where to begin. In this guide, we’ve concentrated our knowledge into a beginner’s guide to astrophotography that will equip you with both basic techniques and creative ways to capture the night sky.

As a hobby, astrophotography requires two types of investment. The first is financial: you’ll need a camera, at least one lens, and a few accessories, as well as a warm coat for cold nights spent under the stars. Take a look at our guide to the best cameras for astrophotography and best lenses for astro to help get you started with this aspect of astrophotography.

Night sky image over circle of stones

Capturing the milky way can be a great place for beginners to start. (Image credit: Stuart Cornell)

The second investment is time and patience — though these are things you sadly cannot purchase. Astrophotography is a photographic style that’s tricky to get right the first time and will take many attempts, iterating on the same ideas until you can finally provide an image that’s got some real ‘wow’ factor.

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Widespread Auroras That Lit Skies This Week Are Getting More Common | Smart News

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green, white and purple glowing lights stretch vertically into the sky above silhouettes of trees

Aurora borealis captured in northern Minnesota on April 23.
Christopher Ingraham via Twitter

Skywatchers across the world were treated to rare dancing light displays on Sunday and early Monday as the northern lights stretched much farther south than usual. With the colors dazzling viewers as far as Texas, this may have been the most widespread aurora borealis since 2003, report Matthew Cappucci and Kasha Patel for the Washington Post.

“The show lasted about 20 minutes all together, and [then] burst in intensity for about five minutes, with these beams of white light coming down from the sky,” Eric Eisner, a high school teacher from Santa Monica who viewed the aurora while camping in the Owens Peak Wilderness in California, tells Amy Graff of SFGATE. “It’s the kind of thing where you wake up in the morning and you’re like, ‘Oh that must have been a dream,’ but you realize it was real.” 

Auroras occur when charged particles from the sun collide with gases in our atmosphere. The aurora borealis (also called the northern lights) and the aurora australis (southern lights) commonly occur close to the poles, because the Earth’s magnetic field steers the charged particles there. 

But every so often, the sun spews out large amounts of plasma, charged particles and magnetic energy called coronal mass ejections (CME) that hurtle toward Earth as fast as 6.7 million miles per hour. This material can spark a geomagnetic storm, or a disruption in the magnetic field surrounding Earth—and experts say strong ones are growing more common. The storm that hit on Sunday was rated “severe,” a 4 out of 5 on NOAA’s scale, causing the auroras to be larger than usual.

“The way this storm—this CME—connected was just perfectly connected to Earth’s magnetic field,” Bill Murtagh, program coordinator for the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center, tells the Post. “Consequently, the storming was up at the severe level versus just the moderate, maybe strong, level that we might have expected.”

During this week’s storm, the northern lights stretched as far south as Colorado, New Mexico, France and Germany, while the southern lights appeared as far north as the Central West region of Australia’s New South Wales, reports Daisy Dobrijevic for Space.com. Viewers reported spectacular colors ranging from reds to greens and yellows—a variation caused by atoms of different elements reacting with the solar energy at different altitudes.

Storms like this one are expected to get more common in the near future. The sun’s activity level fluctuates over an 11-year cycle, and during that period, severe geomagnetic storms typically occur about 100 times. The surges in energy from these storms can cause disturbances in the power grid, GPS and radio communications, in addition to creating fantastic displays in the sky. Our current solar cycle is expected to peak in July 2025, which means we can expect increased activity of this kind over the next few years.

“We’re in a ramped-up, elevated stage from now for the next four, five, six years,” Murtagh tells Grace Toohey of the Los Angeles Times. “We’ll certainly see more [auroras]. … If you missed this one, stay tuned, there’s more to come.”



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Darrtown engineer photographs the universe from home

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“One night I set up a field scope on the grill. I was amazed by the detail I saw on the moon. I said to myself that I’m buying a telescope tomorrow.”

Now, approaching five years later, Titus has built his own observatory, runs his Facebook page, and has become vice president of the Cincinnati Astronomical Society.

The mostly-wooden observatory consists of two floors: a lower level containing a computer workstation where Titus refines his images, and an upper level where a human-sized telescope lives. Titus has installed metal retractable panels that open when he wants to view the sky, and can rotate the second floor to face any direction he pleases. Titus did not give an exact figure for how much he spent building the observatory, but implied it was well into the thousands.

The Cincinnati Astronomical Society (CAS) has a history stretching back over a century and is one of the oldest organizations of its kind in the nation, according to president Bryan Simpson.

Founder DeLisle Stewart created CAS in 1911 as an astrophotography-focused group after the Cincinnati Observatory refused to provide him necessary photography equipment. Now, the volunteer-only organization serves as a gathering place for local astronomers and an educational body that frequently does outreach events.

The society has headquarters in Miamitown, where it holds its members-only meetings, and also has two other properties in rural Adams County, Ohio and Bracken County, Kentucky that are set up for camping and stargazing.

“To do astrophotography, you have to have a dark sky,” Simpson said.

Simpson also recognized the contributions of Titus as a newer yet extremely devoted member.

“He’s already in the top three or four astrophotographers in the area,” Simpson said. “He has a real passion for it, and I hope that spreads to others.”

Ryan Martin, another CAS member and astrophotographer, is one person who Titus has already spread his influence to.

“Mike has inspired me to do an observatory,” Martin said. “I have the two telescopes I want and am really excited about this coming summer.”

Martin has been a member of the astronomical society since December 2019, after he “fell into a YouTube rabbit hole of astrophotography” while dealing with a foot injury and decided to take up the hobby using a telescope he had been given as a child.

Neither Martin nor Titus have an academic background in astronomy. Titus said he largely educated himself on the subject through Wikipedia articles, library books, and instruction from fellow CAS members.

“You can’t discount the contributions of amateur astronomers to the field,” Simpson said.

It’s possible that Titus has already made major contributions to the field, as he has sent images of multiple asteroids to the Minor Planet Center for review as potential new discoveries.

While he waits for word back, Titus will continue to operate his observatory each night, searching for the next big photo op and hoping no clouds or rogue satellites will get in the way.

This article originally published by the Oxford Observer, a digital publication of Miami University journalism student content. See it at oxfordobserver.org.



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AlUla Skies Festival Returns to Saudi Arabia

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AlUla Skies Festival Returns to Saudi Arabia


© saudimoments
AlUla Skies Festival Returns to Saudi Arabia

The AlUla Skies Festival is returning for a second year, from April 26th until May 13th, with a range of adventure, cultural, heritage, and entertainment experiences.

Read More: Here is a List of Top Events to Attend in Saudi Arabia 2023

A host of unique activities, including hot air balloons and stargazing, are sure to provide an incredible spectacle from every angle.

Visitors will have the chance to view AlUla from a hot air balloon or helicopter during the daytime, while stargazing, music shows, and astrophotography will be among the nighttime activities.

Phillip Jones, chief tourism officer at Royal Commission for AlUla (RCU), said: “AlUla Skies Festival is a unique opportunity to welcome visitors from the Kingdom and the world to AlUla, to further strengthen its position as a leading tourist destination in the region.

“Since ancient times, the sky has been a map for those who visited AlUla, as they were guided by the stars and the constellations to travel on the ancient incense trading route, and today we celebrate the history of the skies with unique events and offers that position AlUla Skies Festival as a must-do on the travelers bucket list every year.”

Hot air balloon trips in North Hegra will operate each day from 7 am to 8:30 am and 4 pm to 5:30 pm. You can book your flight over the UNESCO World Heritage Site here. 

Helicopter tours will give you birds-eye views of AlUla’s most famous landmarks and heritage sites. The flight duration is 30 minutes.

Meanwhile, AlUla Skies is also providing a combined experience of stargazing and astrophotography from 4.30-10.30 pm daily, in an area that offers some of the very best views of the night sky.

A Giant Swing where participants jump off the mountain edge and swing is also available, an outdoor cinema, and AlUla Stairway, with a descent all the way back down on a 150-meter zipline, are also available during the event.  

This article was posted on saudimoments

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Save nearly $600 on this Olympus astrophotography camera

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 OLYMPUS OM-D E-M1 Mark III

OLYMPUS OM-D E-M1 Mark III

One of the our top-rated astrophotography cameras is massively reduced at Walmart.

The Olympus OM-D E-M1 Mark II is one of the best astrophotography cameras that money can buy right now – but it doesn’t come cheap. That’s why we were so surprised to stumble upon this doozy of an offer from Walmart.

The retailer is offering the OLYMPUS OM-D E-M1 Mark III for just $1204.95 – a discount of nearly $600 from the MSRP of $1799. Weirdly, the Walmart page doesn’t mark it down as a deal, but this is indeed a great discount on this lightweight astro camera.

Update: The price jumped up by about $60 since we first published about it, so we’ve updated the article accordingly. It was $1141.97, it’s now $1204.95 – still a great deal.

OLYMPUS OM-D E-M1 Mark III – Was $1799, now $1204.95 at Walmart

Save nearly $600 on one of the best astrophotography cameras around (lens not included)View Deal

One of the best features of the OLYMPUS OM-D E-M1 Mark III is its Starry Sky Autofocus, which means the camera is able to use an algorithm to zero in on the smallest stars visible for an impressively sharp picture.

There are two priority modes, too; one for accuracy, and one for speed. The former is ideal for tripods, but the latter means you can grab some great astrophotography shots with a handheld camera. Don’t worry about your arm getting tired, either – the OLYMPUS OM-D E-M1 Mark III is impressively compact and lightweight.

That small size does mean the sensor is a little smaller, but with the wealth of features on offer we’d say it’s still worth a look.

There’s even a Live Composite mode that keeps the shutter open for six hours, adding exposure when lighting changes, and USB connectivity is ideal for keeping the battery topped up while out and about.

You will need your own lenses, however, as this deal is for the camera body only.

Looking for more of the best cameras around but taking photos of nature instead? Be sure to check out our picks for the best wildlife photography cameras.

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Una gran tormenta solar permite ver auroras boreales desde España

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La noche del pasado 23 de abril una gran eyección de masa coronal producida por una tormenta solar de clase G4 (KP8/9) alcanzó el campo magnético terrestre a 580km/s. El efecto de este repentino impacto energético se ha traducido en vistosas auroras boreales de colores verdosos y rojizos en zonas próximas al circulo polar como es habitual pero no es tan frecuente que estas auroras se dejen ver en latitudes más bajas como Francia e incluso España como muestran las cámaras del observatorio de Calar Alto.

Obviamente el espectáculo no se ve igual desde nuestras latitudes que desde las zonas árticas. Aquí se pudo apreciar solamente como una tonalidad rojiza hacia el horizonte norte, difícilmente visible al ojo humano excepto si nos encontramos en un lugar sin contaminación lumínica, pero las cámaras fotográficas en modo de larga exposición si son capaces de captar esa tenue luz.

Las auroras son fenómenos nada inusuales que tienen ciclos de actividad motivadas por nuestro Sol. Actualmente nos estamos acercando al máximo solar del ciclo 25 por lo que es buen momento para plantearse un viaje a observarlas. La noticia no obstante radica en el hecho de poder apreciarse en esta ocasión desde latitudes tan bajas como las de España (hay algunos registros que hablan de auroras visibles en nuestro país durante la Guerra Civil). De hecho las auroras han llegado a ser divisadas desde latitudes de 29,5ºN en la frontera entre Estados Unidos y México.

Las redes sociales se han llenado de imágenes de personas que han capturado el fenómeno incluso con sus teléfonos móviles. Habrá que estar atento a las próximas tormentas solares y tener nuestras cámaras de fotos preparadas.

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Best telescopes 2023: To stargaze galaxies, nebulas and more

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We’ve rounded up the best telescopes for stargazing in this comprehensive overall guide. As well as picking the very best models, we’ve included telescopes to suit every level of astronomer and catered to every budget. Wondering what are the best telescopes? We’ve tested and reviewed some of the best telescopes you can buy.

If you’re an avid bargain hunter, check out our telescope deals page, which is regularly updated with the best telescope deals as we find them. For novices, we have a guide covering what are the best telescopes for beginners. But to discover what are the best telescopes to buy overall, read on.

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Una noche bajo las líridas

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De nuevo volvemos al ataque. Una semana después de la última salida cargamos otra vez todos los trastos en el coche y salimos de Madrid rumbo sur en busca de cielos oscuros llenos de estrellas. Nos espera una noche bajo las Líridas, las estrellas fugaces del mes de abril, que esta noche tienen su máximo de actividad.

A pesar de que el día había amanecido con algunos chubascos la tarde ya se mostraba totalmente despejada, además no había llovido mucho y los campos acusan la sequía por lo que el poco agua que cayó enseguida fue capturada por el suelo y no había ningún charco. Llegamos al punto de observación en Toledo a la misma hora que la semana pasada y nuestros amigos ya habían llegado e incluso uno de ellos ya tenía montado el telescopio.

Aunque la temperatura era agradable soplaba una ligera brisa que nos acompañó durante la primera mitad de la noche y en algunos casos resultaba algo molesta por producir rachas.

atardecerazul

La puesta de Sol fue un espectáculo. El cielo se llenó de infinitas variaciones de tonos azulados que se fundían en el horizonte con otra infinita combinación de anaranjados. Tras el chaparrón de la mañana el cielo estaba muy limpio de nubes aunque se apreciaba que la concentración de polen era altísima.

Una luna creciente de tan sólo 2 días mostraba su tímida sonrisa acompañada de un brillantísimo Venus de la -4,1 iluminado a un 69%. Estuvimos buscando Mercurio pero su tenue brillo de la +3 acompañado del hecho de que al atardecer ya se encontraba bastante bajo nos impidió verlo esta vez como si que hicimos la semana pasada.

Con las últimas luces del día ya empezaban a brillar algunas estrellas, Sirio era la que más destacaba y gracias a esta podíamos encontrar después a Betelgeuse (marcando máximos de brillo en las últimas fechas) y tras ésta podíamos encontrar Rigel y un poco más lejos Castor y Pollux junto a un puntito rojizo que no podía ser otro que el planeta Marte. Estuve disfrutando un rato de estos primeros astros visibles hasta que el vuelo de un mochuelo se cruzó en mi camino y le estuve siguiendo hasta su olivo. Los grillos empezaban a cantar y la banda sonora de la noche arrancaba acompañada de ululatos.

estrellayluna

Lo que era un total espectáculo era la Luna, que presentaba una destacada luz cenicienta y se dejaba disfrutar tanto con prismáticos como con telescopio. Una estrella variable doble (HD26128) se deslizó rodando la superficie de la Luna y llegamos a pensar que sería ocultada, cosa que no ocurrió finalmente pero era una maravilla apreciar el movimiento de traslación de nuestro satélite (sumado al de rotación de nuestro planeta) en relación a la estrella.

Después de disfrutar el bocadillo y a eso de las 22:00 empecé la rutina de alineación del telescopio. La idea era empezar la sesión a las 22:38 que marcaba el inicio de la noche astronómica.

En esta ocasión sacaría el color el objeto de la semana pasada, M58 y alrededores. Así que programé dos sets RGB de 150” a bin2 de 12 imágenes cada uno con dithering cada 4 tomas y reenfoque cada 6 imágenes o si había un cambio de filtro.

Una vez funcionando el telescopio ya pude continuar con mi observación visual (si bien cada 15 minutos o así le voy echando un vistazo al telescopio por si pasara algo con el guiado o el enfoque, no hay que confiarse).

Estuvimos observado varios objetos con los prismáticos aunque teniendo el 100mm de “S” y el 12” de nuestro otro compañero al final terminamos mirando más por sus telescopios. Multitud de galaxias como NGC4565 (aguja) o NGC3521 que además de ser muy bonita en fotografías es toda una delicia en visual.

Destacada visibilidad de Líridas

Como esa noche era el máximo de las Líridas por supuesto no pudieron faltar algunos de estos meteoros, la mayoría de ellos muy sutiles y rapidísimos pero otros mucho más brillantes que dejaban una gran estela y parecían muy rasantes. También pudimos ver varios meteoros esporádicos que por su radiante no pertenecían a las Líridas. Entre los 4 que éramos fácilmente vimos unos 30 meteoros y eso que muchas veces andábamos mirando los ordenadores o a través de los telescopios.

Una de las espinitas que me quedó de la última noche fue poder ver el cúmulo de Omega Centauri así que esta vez volví a intentarlo. Me alejé por el camino y subí por unas tierras de labranza en busca de algo más de altura pero nada, debía estar justo oculto por el horizonte de montes que tenía delante. El caso es que ya estaba culminando así que lo tenía difícil para verlo más tarde… no obstante como 1 hora después volví a intentarlo y en esta ocasión tuve más suerte. Un pequeño borroncillo muy difuso era visible rozando el horizonte. Una sonrisa se dibujó en mi cara –“¡Te pillé!”. Y no pude evitar acordarme de un timelapse que unos amigos publicaron en Twitter hace unos días con una captura similar a lo que yo estaba viendo si bien en mi caso el cúmulo estaba más cerca incluso del horizonte.

Otra de las cosas un poco fuera de lo normal que vi esa noche fue un grupo de 3 satélites en formación triangular por la zona de Casiopea, muy bajos en el horizonte. Fue quejarme de ellos en alto y de la cantidad de basura espacial que hay e instantáneamente aparecer otros tres satélites más con la misma formación y en la misma zona, siguiendo a los anteriores ¿Serían Starlink?

Con una agradable noche disfrutada que empezó con 15º y terminamos con 10º, un SQM que llegó a marcar 21.24 y temperatura IR del cielo de -24º dimos por terminada la sesión a las 03:30 ya que al día siguiente teníamos compromisos familiares. Ya en mayo veremos lo que hacemos porque al anochecer más tarde igual empieza a salir a cuenta ir a una casita rural o algo así para aprovechar lo máximo posible. Es lo malo de estas fechas, que las noches cada vez son más cortas.

De momento más que en la próxima salida toca pensar en el Congreso Estatal de Astronomía que se celebra la semana que viene en Zaragoza y donde iremos por primera vez a ver que se desarrolla por allí. Ya os iré contando.



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