Connect with us

Hawaii

Space photo of the week: Astronomers make an ‘artificial star’ over Hawaii

Published

on

Space photo of the week: Astronomers make an ‘artificial star’ over Hawaii


What it is: The Gemini North telescope

When it was published: Feb. 7, 2024

Where it is: The Gemini Observatory at the summit of Mauna Kea in Hawaii

Why it’s so special: Stars twinkle — and that isn’t good if you want to study them using large telescopes. The twinkling comes from light passing through different layers of Earth’s turbulent atmosphere, which leads to a blurry, jumpy image in a telescope. Astronomers call this effect poor “seeing,” and it can interrupt astronomy for many nights — or, at least, it used to.

Advertisement

On the Gemini North telescope, as on many modern ground-based telescopes, astronomers now use adaptive optics, which allows the telescope to correct for the distortions created by Earth’s atmosphere. From the top of Gemini North, a yellow laser called TOPTICA is used to make an artificial star on traces of sodium gas in the atmosphere about 50 miles (80 kilometers) over Earth. Computers then deform the telescope’s mirrors slightly to correct for any distortion.

That combination of lasers and computing power enables ground-based telescopes to make observations at resolutions that equal, and sometimes exceed, powerful space-based telescopes such as the Hubble Space Telescope and the James Webb Space Telescope (JWST). With the blurring effect of Earth’s atmosphere overcome, the ground-based Gemini North can use its larger mirrors to get higher-resolution images of stars, planets and galaxies. (Gemini North’s mirror is 26.6 feet, or 8.1 meters, in diameter, whereas JWST’s is 21.3 feet, or 6.5 m.) Astronomers hope these adaptive optics will allow ground-based telescopes to directly image exoplanets.

However, this photo and an accompanying image from a different angle are slightly misleading. The orangeyTOPTICA laser shown isn’t as bright to the naked eye; it looks that way only because this is a long-exposure image, as the star trails show.



Source link

Advertisement

Hawaii

County approval sought for festival that has irritated neighbors – West Hawaii Today

Published

on

County approval sought for festival that has irritated neighbors – West Hawaii Today






Source link

Continue Reading

Hawaii

Tourist yells ‘I’m rich’ after beachgoers beg him to stop attacking endangered seal — before he’s detained

Published

on

Tourist yells ‘I’m rich’ after beachgoers beg him to stop attacking endangered seal — before he’s detained


A tourist who threw a huge rock at an endangered Hawaiian monk seal in Maui boasted that he didn’t care about the consequences because he’s “rich” — before he was detained over the attack.

The man was filmed lifting a large rock from a beach and throwing it towards an endangered seal as it swam off the Lahaina shoreline last Tuesday, narrowly missing the animal’s head.

Kaylee Schnitzer, who filmed the video, can be heard yelling at the man: “What are you doing? Why would you throw a rock at it?”

She later told KHON 2: “We told him that we called the cops, and he was like, ‘I don’t care. Fine me, I’m rich.’ He said that, and he kept walking.”

Advertisement

The Division of Conservation and Resources Enforcement’s Maui Branch dispatched officers to the beach, where they detained the suspect. Hawaii’s Department of Land and Natural Resources said it will not be share the suspect’s identity as he has not been criminally charged at this time. He is understood to be a 37-year-old man from Seattle, Washington.

A viral video captured a tourist throwing a large rock at an endangered monk seal in Hawaii (KHON2)

Hawaiian monk seals are among the most endangered marine mammals in the world. Harassing, injuring or killing one is against both state and federal law, and violators may face fines or criminal penalties. The horrifying incident sparked online outrage and Schnitzer’s video went viral.

The seal, named “Lani,” is beloved by many residents in the area after returning to Lahaina following the 2023 wildfires. Maui Mayor Richard Bissen noted in an Instagram post that both members of his team and locals have “watched over and deeply cared for” Lani since her return.

“Let me be clear, this is not the kind of visitor we welcome on Maui,” Bissen said. “We welcome respectful visitors that understand that our cultural environment and wildlife must be treated with care and aloha. Behavior like this will not be tolerated.”

Advertisement
Monk seals are one of the most endangered marine mammals in the world (Hawaii Department of Land and Natural Resources)

Monk seals are one of the most endangered marine mammals in the world (Hawaii Department of Land and Natural Resources)

State officials said the suspect was questioned by authorities and later released after he requested legal counsel.

The Department of Land and Natural Resources said it is investigating the incident and will turn over the findings to NOAA’s Office of Law Enforcement for possible federal action. The Independent has contacted the department for more information.

During a news conference on Wednesday, the Division of Conservation and Resources Enforcement Chief Jason Redulla said officials have not confirmed whether the seal was harmed by the rock.

Police reminded the public to avoid interactions with the protected species and report harmful behavior to authorities.





Source link

Advertisement
Continue Reading

Hawaii

Hilo tsunami clock memorial to be moved? – Hawaii Tribune-Herald

Published

on

Hilo tsunami clock memorial to be moved? – Hawaii Tribune-Herald






Source link

Advertisement
Continue Reading
Advertisement

Trending