European scientists are taking advantage of this week’s solar eclipse to test a potentially groundbreaking instrument that could transform the way astronomers study the Sun.
For weeks, a team from the Astrophysical Observatory of Turin has been stationed at Spain’s Javalambre Astrophysical Observatory, preparing to deploy a novel spectrometer ahead of the August 12 eclipse.
On that date, researchers will activate the Circular Slit Spectrometer (CISS), which the Turin-based team says will provide a unique new view of our life-giving star. Specifically, the device will focus on the corona, the outermost portions of the Solar atmosphere, and the hottest part of the Sun.
This month, skywatchers will be treated to a trio of celestial events: a solar eclipse and the peak of the Perseids meteor shower on August 12, followed by a lunar eclipse between August 27 and 28. The total solar eclipse will be best viewed from parts of Spain, Portugal, Russia, Iceland, and Greenland, while observers across much of Europe, Africa, and North America will experience only a partial eclipse.
To take advantage of the event, the research team traveled from its home base in Padua, northern Italy, to Spain, where years of development work will culminate in the first field test of CISS. The scientists believe the new instrument could significantly improve observations of the Sun’s corona.
Spectrometers are among astronomers’ most valuable tools, allowing researchers to analyze the composition of stars and even detect the atmospheres of distant exoplanets by examining subtle changes in starlight.
Closer to home, the Italian team believes CISS can separate the wavelengths of sunlight far more rapidly than existing instruments. That capability could prove especially valuable because the corona drives powerful space weather events capable of disrupting communications, power grids, and GPS systems on Earth and in orbit.
The researchers see the eclipse as the ideal opportunity to test their instrument, since the Moon’s passage in front of the Sun dramatically increases the contrast of the corona against the sky. For the team, the observation marks the culmination of more than two and a half years spent rethinking some of the fundamental design principles behind conventional spectrometers.
Unlike traditional spectrometers, which typically rely on a narrow rectangular slit, CISS uses a circular slit. This allows it to “capture the spectrum of the entire corona at a certain distance from the centre of the Sun in a single photograph,” according to principal investigator Federico Landini of the Astrophysical Observatory of Turin.
By redesigning the instrument’s aperture, the researchers say they have reduced the time needed to scan the corona from hours to just minutes. If successful, the eclipse demonstration could pave the way for incorporating the technology into future space missions designed to observe the Sun from closer vantage points.
For now, the team is focused on ensuring the best possible observing conditions. Researchers continue to monitor the weather, with current forecasts appearing favorable for eclipse viewing. To minimize the risk of equipment problems, the team transported CISS from Italy to Spain by van rather than by air, avoiding the need to disassemble the instrument and reducing the possibility of flight delays or cancellations.
Later this week, they will learn whether years of work have produced a breakthrough in solar observation—or simply the next step in refining a promising new technology.
Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org.
A solar eclipse, the Perseids, bright Venus after sunset, and a deep partial lunar eclipse highlight August’s skywatching.
A solar eclipse, one of the year’s best meteor showers, Venus at its brightest in the evening sky, and a lunar eclipse to close out the month.
That’s “What’s Up” for August.
On Aug. 12, a total solar eclipse crosses northern Russia, Greenland, Iceland, and northern Spain, with a small corner of Portugal inside the path of totality.
In parts of the United States, from Alaska to North Carolina, the eclipse is partial. The Moon will take only a small bite out of the Sun, and the amount of coverage will vary with location.
Remember to watch safely. Use certified eclipse glasses or a safe solar viewer any time any part of the Sun is visible. Regular sunglasses are not safe. And never use binoculars, a telescope, or a camera without a solar filter made for the front of the optics.
Later that same night, the Perseid meteor shower will light up the sky, peaking the evening of Aug. 12 into the early morning hours of the 13th. And with a New Moon arriving on the 12th, the skies will be ideally dark.
The Perseids happen every year when Earth passes through a debris stream left behind by Comet Swift-Tuttle. As those tiny bits of comet dust hit our atmosphere at high speed, they burn up as bright streaks of light.
To view this meteor shower, look toward the northeast once it’s fully dark and watch for the constellation Perseus to clear the horizon. This is where the meteors originate, but let your eyes wander, because they can flash across any part of the sky.
For the best view, stay out late as the stars climb higher, find a dark open spot, and give your eyes 30 minutes to adjust.
Aug. 14-16, Venus reaches its greatest eastern elongation, which is its widest apparent separation from the Sun during this evening appearance.
Look low in the western sky shortly after sunset for the bright object that will outshine every star around it. Through a telescope after sunset, Venus will look close to half lit, like a tiny lunar phase.
On the night of Aug. 27, continuing into Aug. 28 for some time zones, the Full Moon slips through Earth’s shadow, resulting in a partial lunar eclipse. It will be visible from much of North and South America and parts of Europe and Africa.
At maximum eclipse, about 93% of the Moon’s diameter will be inside Earth’s dark central shadow, called the umbra. The Moon will not be completely covered, but it can look dramatically darkened, with a rusty, coppery tint along the covered edge.
Unlike a solar eclipse, a lunar eclipse is safe to watch with just your eyes. Binoculars or a small telescope can give you a closer view of Earth’s curved shadow moving across the Moon.
Here are the phases of the Moon for August.
You can stay up to date on all of NASA’s missions exploring the solar system and beyond at science.nasa.gov. I’m Raquel Villanueva from NASA’s Jet Propulsion Laboratory, and that’s What’s Up for this month.
The post What’s Up: August 2026 Skywatching Tips from NASA appeared first on NASA Science.
A solar eclipse, the Perseids, bright Venus after sunset, and a deep partial lunar eclipse highlight August’s skywatching.
A solar eclipse, one of the year’s best meteor showers, Venus at its brightest in the evening sky, and a lunar eclipse to close out the month.
That’s “What’s Up” for August.
On Aug. 12, a total solar eclipse crosses northern Russia, Greenland, Iceland, and northern Spain, with a small corner of Portugal inside the path of totality.
In parts of the United States, from Alaska to North Carolina, the eclipse is partial. The Moon will take only a small bite out of the Sun, and the amount of coverage will vary with location.
Remember to watch safely. Use certified eclipse glasses or a safe solar viewer any time any part of the Sun is visible. Regular sunglasses are not safe. And never use binoculars, a telescope, or a camera without a solar filter made for the front of the optics.
Later that same night, the Perseid meteor shower will light up the sky, peaking the evening of Aug. 12 into the early morning hours of the 13th. And with a New Moon arriving on the 12th, the skies will be ideally dark.
The Perseids happen every year when Earth passes through a debris stream left behind by Comet Swift-Tuttle. As those tiny bits of comet dust hit our atmosphere at high speed, they burn up as bright streaks of light.
To view this meteor shower, look toward the northeast once it’s fully dark and watch for the constellation Perseus to clear the horizon. This is where the meteors originate, but let your eyes wander, because they can flash across any part of the sky.
For the best view, stay out late as the stars climb higher, find a dark open spot, and give your eyes 30 minutes to adjust.
Aug. 14-16, Venus reaches its greatest eastern elongation, which is its widest apparent separation from the Sun during this evening appearance.
Look low in the western sky shortly after sunset for the bright object that will outshine every star around it. Through a telescope after sunset, Venus will look close to half lit, like a tiny lunar phase.
On the night of Aug. 27, continuing into Aug. 28 for some time zones, the Full Moon slips through Earth’s shadow, resulting in a partial lunar eclipse. It will be visible from much of North and South America and parts of Europe and Africa.
At maximum eclipse, about 93% of the Moon’s diameter will be inside Earth’s dark central shadow, called the umbra. The Moon will not be completely covered, but it can look dramatically darkened, with a rusty, coppery tint along the covered edge.
Unlike a solar eclipse, a lunar eclipse is safe to watch with just your eyes. Binoculars or a small telescope can give you a closer view of Earth’s curved shadow moving across the Moon.
Here are the phases of the Moon for August.
You can stay up to date on all of NASA’s missions exploring the solar system and beyond at science.nasa.gov. I’m Raquel Villanueva from NASA’s Jet Propulsion Laboratory, and that’s What’s Up for this month.
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