Researchers have monitored #Neptune for over 30 years with the #Keck Observatory (since 2002), the Lick Observatory (2018-2019), and the #Hubble Space Telescope (since 1994).

One neat result comes out of this data. The number of clouds on Neptune seems to be correlated with the solar cycle. The sun puts out the maximum amount of ultraviolet light during the solar cycle's peak. Two years later, more clouds appear on Neptune.

Learn more:
https://www.keckobservatory.org/neptune-clouds
https://hubblesite.org/contents/news-releases/2023/news-2023-019

W. M. Keck Observatory is pleased to announce its newest instrument, the #Keck Cosmic Reionization Mapper (KCRM), has successfully achieved “first light,” marking its first time ‘seeing’ the universe from Maunakea on Hawaiʻi Island: https://keckobservatory.org/kcrm and https://www.facebook.com/KeckObservatory/posts/pfbid0zM423kKTtN8wHEAG6adisbd428puxp7PFpZ7mBgLmxziZ2nLvUtfvxn6MWo9j9gil

Using Hubble, researchers accidentally discover ejected black hole forcing star creation
https://www.nasaspaceflight.com/2023/04/runaway-black-hole/

Throughout the universe, supermassive black holes can typically be found at the center of massive… The post Using Hubble, researchers accidentally discover ejected black hole forcing star creation appeared first on NASASpaceFlight.com .
#Featured #Other #black_holes #galaxies #Hubble #James_Webb #keck #Roman #Stars

And here is what a quick reduction of a #Keck echelle spectrum looks like, with the sky emission taken out: this is from a #DwarfGalaxy in the #VirgoCluster observed earlier tonight; the interest here is in the absorption lines.

A raw #Keck #echelle spectrum of the #RRLyrae star currently under observation: blue is on the upper left, (infra)red on the lower right. The actual star spectrum is the thin line in all strips, the horizontal lines are sky emission lines - these are important to capture, too, because they have to be carefully subtracted from the star spectrum. Therefore the star is placed in a slit, to get the sky left and right, too.

The new #Keck target - an #RRLyrae star at the outskirts of our Galaxy in the #halo; the Virgo Cluster is too low now - has been placed behind the spectrograph slit marked with the cursor (and thus can't be seen by the guide camera now). A 45-minute exposure of a spectrum is now being taken: the goal is its #radialvelocity, for determining the #Galaxy's mass and looking for a reflex motion of the whole Milky Way caused by its Large Magellanic Cloud neighbor.

The new #Keck target - an #RRLyrae star at the outskirts of our Galaxy in the #halo; the Virgo Cluster is too low now - has been placed behind the spectrograph slit marked with the cursor (and thus can't be seen by the guide camera now). A 45-minute exposure of a spectrum is now being taken. The goal is its #radialvelocity, for determining the #Galaxy's mass and looking for a reflex motion if the Milky Way caused by the Large Magellanic Cloud.

What the control screen of the #Keck telescope is showing while it's slewing to the new target: stars trailing in the guide camera view on the upper right.

What the control screen of the #Keck telescope is showing while it's slewing to the new target: stars trailing in the guide camera view on the upper right.

Des astrophysiciens ont découvert le système binaire d'étoiles naines ultrafroides le plus rapproché jamais observé. Les deux étoiles sont si proches l'une de l'autre qu'elles se tournent autour en seulement 17 heures.
Phénomène rare expliqué par Éric Simon
https://www.ca-se-passe-la-haut.fr/2023/03/decouverte-dun-couple-detoiles-naines.html
#astrophysique #étoiles #télescope #Keck #magnétosphère #spectre

Our group meeting today turned out to be a therapy session for everyone discussing having to refit IFU data for the nth time.... 😂

#IFU #Keck #JWST #TeamBuilding

The Keck Telescope is using its atmospheric stabilisation laser right now. See https://www.youtube.com/watch?v=_8rp1p_tWlc

#Astronomy #Telescope #Keck

Astronomen maken eerste directe opname van bruine dwerg in de Hyaden

Een team van astronomen van de W.M. Keck sterrenwacht en de Subaru Telescope, beiden op Hawaï, hebben een bruine dwerg gefotografeerd die in een baan om HIP 21152, een jonge zonachtige ster in de Hyaden draait.

https://www.kuuke.nl/astronomen-maken-eerste-directe-opname-van-bruine-dwerg-in-de-hyaden/

#astronomie #hyaden #bruinedwerg #keck #subaru

#NExScI also handles community access to a couple of different telescopes like #Keck and other through NN-Explore/NOIRLab observing time. #ExoPAG27

HR 8799

This system harbors four super-Jupiters orbiting with periods that range from decades to centuries.

These #exoplanets have been directly #imaged.

This footage consists of 10 images of HR 8799 taken with the #Keck Telescope over 12 years.

Video made by Jason Wang, data reduced by William Thompson and Christian Marois, and observations organized by Quinn Konopacky. Bruce Macintosh, Travis Barman, and Ben Zuckerman assisted in the observations.

#astronomy
https://arxiv.org/abs/2210.14213

https://m.facebook.com/story.php?story_fbid=pfbid025iCAXHypHg2dN6mCbpYUYX6geYbR5ro9zX3YufH1NFnYoyxZLFnFDHkphzEsJz1xl&id=66274830772&mibextid=qC1gEa #jwst #keck

@c_dan4th @NBGlitterBomb which island is #keck on? Is the Mauna Loa eruption an issue?

@shewfig @NBGlitterBomb Yeah, it's very cool. There were simultaneous #JWST and groundbased #Keck telescope (Hawaii) images. They're spectacular!

Evolution of clouds on #Saturn’s #Moon #Titan over 30 hours between November 4 and November 6, 2022, as seen by the #JamesWebbSpaceTelescope NIRCam (left) and #KeckObservatory NIRC-2 (right).

#SpaceMastodon #Spacedon #Space #Astronomy #Astrodon #ScienceMastodon #Sciencedon #Science #Webb #JWST #Keck #Moons

@spacegeck i'm not sure how to better ask this. mega-apologies: why do the photos look blurry?

i get that this is stupid far away.

the first photo feels like, ok, maybe there's just not that many pixels resolving Titan; it's too far away. but the second photo makes me feel like- there are mounds and mounds of pixels, gobs of pixels. but the image being captured is fuzzy for other reasons.

ah ok. so, a little more data: left is JWST. right is Keck with adaptive optics. damn, those some fine adaptive optics, filtering through a lot of atmosphere!! wow. very sharp imaging #keck!
https://keckobservatory.org/titan-clouds/