4 天之前 · A new spin on decades of W. M. Keck Observatory research. Maunakea, Hawaiʻi – A recent study reveals the famous Wolf-Rayet 104 “pinwheel star” holds more mystery but is even less likely to be the potential ‘Death Star’ it was once thought to be.. Research by W. M. Keck Observatory Instrument Scientist and astronomer Grant Hill finally confirms what has been suspected for years: WR ...

Exploring the local and distant Universe from the world’s largest and most scientifically productive telescopes on Earth. Much of what we do is hypothesis testing, or refining previous measurements, but sometimes there is this bolt out of the blue of a completely unanticipated discovery. That is rare, but it is the best!

2 天之前 · Decades of W.M. Keck Observatory research on the famed Wolf-Rayet 104 “pinwheel star” system has taken a new turn, revealing more mystery but reducing concerns about its potential as the ...

The Keck laser guide star (LGS) adaptive optics (AO) systems are available for science with NIRC2 and NIRSPAO on Keck II and with OSIRIS on Keck I. Keck LGSAO Science Publications refereed or all papers.

The Keck NGS AO system produces Strehl ratios as high as 65% at K-band and 45% at H-band. The AO system works well with extended sources as large as Uranus (4 arcsec). Near diffraction-limited can be obtained using guide stars as faint as Rmag=15.5, with partial correction on stars up to a magnitude fainter.

4 天之前 · New research led by W. M. Keck Observatory Instrument Scientist and astronomer Grant Hill has confirmed what scientists have long suspected—WR 104 comprises two massive stars: a Wolf-Rayet star ...

2025年2月4日 · Maunakea, Hawaiʻi – W. M. Keck Observatory on Maunakea, Hawaiʻi Island and NASA’s Hubble Space Telescope have captured a cosmic bullseye! The gargantuan galaxy LEDA 1313424 is rippling with nine star-filled rings after an “arrow” — a far smaller blue dwarf galaxy — shot through its heart.

4 天之前 · A recent study reveals that the famous Wolf-Rayet 104 "pinwheel star" holds more mystery but is even less likely to be the potential "death star" it was once thought to be. Research by W. M. Keck ...

2 天之前 · An infrared image of Wolf-Rayet 104 captured by Keck Observatory’s NIRC instrument in 1998 (Image credit: U.C. Berkeley Space Sciences Laboratory/W. M. Keck Observatory ). The findings have also ...

2024年8月18日 · Astronomers using instruments at both the W. M. Keck Observatory on Maunakea and Pan-STARRS on Haleakala found a star blasting through space at about 1.3 million miles per hour, roughly 0.1%...