TIL #Télescope #LSST
(Large Synoptic Survey Telescope)
Le miroir primaire et le miroir tertiaire sont sur le même support !
Du coup ça fait un gros trou dans le primaire quand même !
Du coup ça n'a plus vraiment de sens de parler de diamètre brut (8,4 m) pour mesurer la sensibilité du télescope, si ?
On devrait plutôt parler de surface de collecte en m² ou alors de diamètre-équivalent-primaire (6.7 m).
"Software suggests Rubin Observatory will discover millions of solar system objects" by GeekWire / @alanboyle - Getting a grasp on what effect the high-resolution sky survey of #RubinObservatory #LSST will have: using previous rates of discovery of asteroids to estimate what we don't yet know, multi-university Sorcha simulation forecasts LSST may discover half of all then-known asteroids within a year. And its majority share will continue to grow. https://www.geekwire.com/2025/sorcha-software-rubin-observatory-millions/ #space #astronomy
Software predicts a bonanza of solar system discoveries
A new type of computer simulation predicts that the Vera C. Rubin Observatory in Chile will discover millions of previously undetected objects in the solar system over the course of the coming decade.
The discovery campaign, which is due to begin in earnest later this year, should expand th
https://cosmiclog.com/2025/06/03/software-predicts-a-bonanza-of-solar-system-discoveries/
#GeekWire #Astronomy #LSST #RubinObservatory #Space
#AsteroidInstitute’s Asteroid ☄️ Discovery Analysis and Mapping (#ADAM) Platform has been in preparation for the @VRubinObs’s Legacy Survey of Space and Time (#LSST) survey 🔭, which will produce about 20 terabytes of data 💽 every night https://b612foundation.org/chelyabinsk-and-the-changing-landscape-of-planetary-defense/
Great, interesting study!😊😀
"Multiscale astrobiology with the Vera C. Rubin Observatory Legacy Survey of Space and Time"
https://frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2025.1594485/full
#Astrobiology #RubinObservatory #science #Exoplanet #Biosignature #life #universe #LSST
The @VRubinObs 220-ton mount takes 5 seconds ⏱️ to move to its next position.
Rubin will do near-real-time processing of new images every night and release world-public alerts within 60 seconds for objects that have moved ☄️ or changed. Every night, Rubin Observatory will produce 20 terabytes of data 💽 https://rubinobservatory.org/explore/how-rubin-works/technology
🗺️ https://graphhopper.com/maps/?point=Rubin+Observatory&layer=Esri+Satellite
Astronomers process test images at Rubin Observatory
The Vera C. Rubin Observatory in Chile has begun generating test images of the night sky, thanks to the Simonyi Survey Telescope and its giant camera as well as a data management team that includes scientists from the University of Washington.
Team members started taking on-sky engineering data w
https://cosmiclog.com/2025/04/22/astronomers-process-test-images-at-rubin-observatory/
#GeekWire #Astronomy #LSST #RubinObservatory #Space
World’s Largest Camera is Ready to Take Its First 3,200-Megapixel Photos of the Universe https://petapixel.com/2025/03/14/worlds-largest-camera-is-ready-to-take-its-first-3200-megapixel-photos-of-the-universe/ #veracrubinobservatory #worldrecord #lsstcamera #astronomy #telescope #universe #science #galaxy #Space #chile #News #lsst #doe #nsf
Weekly Update from the Open Journal of Astrophysics – 01/02/2025
It’s Saturday morning, so once again it’s time for an update of papers published at the Open Journal of Astrophysics. There were no papers to report last week but since the last update we have published four new papers, which brings the number in Volume 8 (2025) up to 11 and the total so far published by OJAp up to 246.
In chronological order of publication, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.
First one up is “A halo model approach for mock catalogs of time-variable strong gravitational lenses” by Katsuya T. Abe & Masamune Oguri (Chiba U, Japan), Simon Birrer & Narayan Khadka (Stony Brook, USA), Philip J. Marshall (Stanford, USA), Cameron Lemon (Stockholm U., Sweden), Anupreeta More (IUCAA, India), and the LSST Dark Energy Science Collaboration. It was published on 27th January 2025 in the folder marked Cosmology and NonGalactic Astrophysics. The paper discusses how to generate mock catalogs of strongly lensed QSOs and Supernovae on galaxy-, group-, and cluster-scales based on a halo model that incorporates dark matter halos, galaxies, and subhalos.
You can find the officially accepted version of this paper on arXiv here.
This paper, also published on Monday 27th January 2025, but in the folder Astrophysics of Galaxies, is “The Soltan argument at redshift 6: UV-luminous quasars contribute less than 10% to early black hole mass growth” by Knud Jahnke (MPI Heidelberg, Germany). This paper presents an argument that almost all growth of supermassive black hole mass at z>6 does not take place in UV-luminous quasars.
Here is a screen grab of the overlay, which includes the abstract:You can find the officially accepted version of the paper on the arXiv here.
The third paper to announce, published on 29th January 2025 in the folder Cosmology and NonGalactic Astrophysics, is “A Heavy Seed Black Hole Mass Function at High Redshift – Prospects for LISA” by Joe McCaffrey & John Regan (Maynooth U., Ireland), Britton Smith (Edinburgh U., UK), John Wise (Georgia Institute of Technology, USA), Brian O’Shea (Michigan State U., USA) and Michael Norman (University of California, San Diego). This is a numerical study of the growth rates of massive black holes in the early Universe and implications for their detection via gravitational wave emission.
You can see the overlay here:
The accepted version of this paper can be found on the arXiv here.
The last paper of this batch is “Forecasting the Detection of Lyman-alpha Forest Weak Lensing from the Dark Energy Spectroscopic Instrument and Other Future Surveys” by Patrick Shaw & Rupert A. C. Croft (Carnegie Mellon U., USA) and R. Benton Metcalf (U. Bologna, Italy). This paper, published on January 30th 2025, is about extending the applicationof Lyman-α forest weak gravitational lensing to lower angular source densities than has previously been done, with forecasts for future spectral surveys. It is in the folder marked Cosmology and NonGalactic Astrophysics.
The overlay is here
You can find the accepted version on arXiv here.
Incidentally, we currently have 121 papers under review, including 81 under a revise and resubmit request.
That’s all for this week. I’ll do another update next Saturday.
#arXiv240916413v2 #arXiv241020014v2 #arXiv241103184v2 #arXiv241107509v3 #AstrophysicsOfGalaxies #BlackHoleSeeds #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #eLISA #LSST #LymanAlphaForest #OJAp #OpenAccessPublishing #OpenJournalOfAstrophysics #quasars #SoltanArgument #strongGravitationalLensing #TheOpenJournalOfAstrophysics #weakGravitationalLensing
Hola amiguis: que sepáis que el Large Synoptic Survey Telescope #LSST del @NatOIRLab se va a llamar Observatorio Vera C. Rubin. Y me he acordado de esta coplilla que le dedicamos en una "Ca(n)ta científica" con @scariosHR (01:38:40):...
Scientists prepare for the most ambitious sky survey yet, anticipating new insight on dark matter and dark energy
https://phys.org/news/2024-11-scientists-ambitious-sky-survey-insight.html
"If we know how certain we can be in our analysis, it enables us to compare our results with other experiments to understand the current state of knowledge across all of cosmology [...] With the data from the LSST, things are about to get much more interesting."
Rubin Observatory’s monster telescope takes shape
The Vera C. Rubin Observatory’s 8.4-meter Simonyi Survey Telescope in Chile has now been equipped with all three of its mirrors, plus a camera for good measure.
Last week’s installation of the telescope’s combined primary/tertiary mirror represented a major milestone in the obs
https://cosmiclog.com/2024/10/10/rubin-observatorys-monster-telescope-takes-shape/
#GeekWire #Astronomy #LSST #RubinObservatory #Space #UniversityOfWashington
Get a wide-angle view of the Simonyi Survey Telescope
Hubble. Webb. Chandra. Spitzer. Rubin. Roman. And now, Simonyi.
With the ramping up of the Simonyi Survey Telescope at the Vera C. Rubin Observatory in Chile, Microsoft software architect Charles Simonyi joins a select group of scientists and technologists, policy
https://cosmiclog.com/2024/09/28/get-a-wide-angle-view-of-the-simonyi-survey-telescope/
#GeekWire #Astronomy #CharlesSimonyi #GeekWireRadio #LSST #RubinObservatory #Space
The @VRubinObs has very recently updated its assessment of the known (and unknown) threats posed by large #satellite constellations on #LSST. The facility and survey remain "uniquely vulnerable to large numbers of bright satellites".
https://www.lsst.org/content/lsst-statement-regarding-increased-deployment-satellite-constellations
The LSST is the Largest Digital Camera Ever
by David Raiklen | @scifi4wifi
The Legacy Survey of Space and Time camera is bigger than an SUV, has more pixels than 300 iPhones and will map the entire visible Universe.
The camera was built at DOE's (Department of Energy) SLAC National Accelerator Laboratory in Menlo Park, California. After two decades of work, its completion was announced in April.
https://scifi.radio/2024/08/19/the-lsst-is-the-largest-digital-camera-ever/
NOIRLab image of the week: From Cerro Pachón to the Moon
Release date: July 31, 2024
Credit: Rubin Observatory/NOIRLab/NSF/AURA/H. Stockebrand
https://noirlab.edu/public/images/iotw2431a/
#Moon #telescope #NOIRLab #photography #astrophotography #astronomy #astrophysics #astrodon #CerroPachón #Chili #VeraRubin #observatory #LSST #science #STEM
Željko Ivezić (@VRubinObs) on the expected impacts of satellites on the #LSST: "How bad will this be for Rubin? It's a nuisance rather than a catastrophe". Loss of ~1% of the time = $15M cost. But if there are 100,000 sats, it could be 10% or more. #IAUGA2024 #Astronomy2024
Up Close With the Completed 3.2-Gigapixel #LSST #Camera
Engineers at the #SLAC National Accelerator Laboratory have completed work on the Legacy Survey of #Space and Time camera. The device is the world's largest digital camera and will be the centerpiece of a 10-year mission to map the night sky from the Vera C. Rubin #Observatory in #Chile.
The biggest digital camera ever made -- 6,600 pounds, 3,200 megapixels https://petapixel.com/2024/04/20/the-biggest-digital-camera-ever-made-6600-pounds-and-3200-megapixels/
#science #space #astronomy #lsstcamera #telescope #lsst #analogastrophotography #camera #cameras #tech #DigitalCameras
The Biggest Digital Camera Ever Made: 6,600 Pounds and 3,200 Megapixels https://petapixel.com/2024/04/20/the-biggest-digital-camera-ever-made-6600-pounds-and-3200-megapixels/ #analogastrophotography #veracrubinobservatory #astronomers #worldrecord #lsstcamera #Spotlight #spotlight #telescope #Features #biggest #feature #science #space #lsst
