Ho letto quel link, ma dice proprio che non usa la stessa tecnica di Webb.
The agency’s upcoming Nancy Grace Roman Space Telescope will carry a technology demonstration instrument to test next-generation coronagraph technology.
The Roman Coronagraph will be the first active coronagraph to fly in space
Entrambi gli articoli esaltano il funzionamento di questo nuovo coronografo. Mi sembra un meccanismo composto, non un disco messo lontano. Dalle immagini che ho visto sembra anche avere filtri a diverse lunghezze d’onda. Sinceramente non ho capito il concetto di come opererà in modo diverso dai precedenti.
Ho letto quel poco che c’é. Usa maschere e specchi deformabili. Come usi le maschere mi sfugge, gli specchi deformabili uniti a avanzati sensori di fronte d’onda correggono le minime deformazioni degli altri specchi e permettono di avere un’immagine più puntiforme, in modo da poter meglio mascherare la stella.
Molto interessante, vedremo
@INGSTAR e @Aran_Benjo C’era un errore di configurazione dell’articolo. Grazie per averlo fatto notare. Gli articoli di AstronautiNews sono sempre aperti a tutti.
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NASA ha pubblicato i dettagli del programma di osservazione, suddiviso in High-Latitude Wide-Area Survey, High-Latitude Time-Domain Survey e Galactic Bulge Time-Domain Survey.
In April, the Roman team received the recommendations and has now determined the survey designs. These observations account for no more than 75 percent of Roman’s surveys during its five-year primary mission, with the remainder allocated to additional observations that will be proposed and developed by the science community in later opportunities.
This infographic describes the High-Latitude Wide-Area Survey that will be conducted by NASA’s Nancy Grace Roman Space Telescope. This observation program has three components, covering more than 5,000 square degrees (about 12 percent of the sky) altogether in just under a year and a half. The main part covers about 2,500 square degrees, doing both spectroscopy (splitting light into individual colors to study patterns that reveal detailed information) and imaging in multiple filters (which allow astronomers to select specific wavelengths of light) to provide the rich dataset needed for precise studies of our universe. A wider component spans more than twice the area using a single filter, specifically covering a large area that can be viewed by ground-based telescopes located in both the northern and southern hemispheres. The final component focuses on a smaller region to provide a deeper view that will help astronomers study faint, distant galaxies. Credit: NASA’s Goddard Space Flight Center
This infographic describes the High-Latitude Time-Domain Survey that will be conducted by NASA’s Nancy Grace Roman Space Telescope. The survey’s main component covers over 18 square degrees — a region of sky as large as 90 full moons — and sees supernovae that occurred up to about 8 billion years ago. Smaller areas within the survey can pierce even farther, potentially back to when the universe was around a billion years old. The survey is split between the northern and southern hemispheres, located in regions of the sky that will be continuously visible to Roman. The bulk of the survey consists of 30-hour observations every five days for two years in the middle of Roman’s five-year primary mission. Credit: NASA’s Goddard Space Flight Center
This infographic describes the Galactic Bulge Time-Domain Survey that will be conducted by NASA’s Nancy Grace Roman Space Telescope. The smallest of Roman’s core surveys, this observation program consists of repeat visits to six fields covering 1.7 square degrees total. One field pierces the very center of the galaxy, and the others are nearby — all in a region of the sky that will be visible to Roman for two 72-day stretches each spring and fall. The survey mainly consists of six seasons (three early on, and three toward the end of Roman’s primary mission), during which Roman views each field every 12 minutes. Roman also views the six fields with less intensity at other times throughout the mission, allowing astronomers to detect microlensing events that can last for years, signaling the presence of isolated, stellar-mass black holes. Credit: NASA’s Goddard Space Flight Center
: NASA/Sydney Rohde
