A vortex coronagraph is a type of optical instrument for telescopes that blocks out the glare of bright objects (like stars) so that smaller objects near...
4 KB (411 words) - 13:56, 14 May 2024
optical vortex coronagraph based on a phase ramp directly etched in a dielectric material, like fused silica. the vector(ial) vortex coronagraph employs...
15 KB (1,789 words) - 00:37, 5 January 2024
2010 a team from NASAs Jet Propulsion Laboratory demonstrated that a vortex coronagraph could enable small telescopes to directly image planets. They did...
43 KB (3,971 words) - 18:40, 10 March 2024
star is so bright. Progress has been made in creating an optical vortex coronagraph to directly observe planets with too low a contrast ratio to their...
24 KB (2,791 words) - 02:35, 19 February 2024
a team from NASA's Jet Propulsion Laboratory demonstrated that a vortex coronagraph could enable small scopes to directly image planets. The Hale had...
29 KB (2,914 words) - 11:56, 26 January 2024
three known planets of the star HR8799, as imaged by the Hale Telescope. The light from the central star was blanked out by a vector vortex coronagraph....
147 KB (15,922 words) - 11:45, 20 May 2024
a team from NASA's Jet Propulsion Laboratory demonstrated that a vortex coronagraph could enable small scopes to directly image planets. They did this...
131 KB (15,006 words) - 07:27, 20 May 2024
data, and new radial velocity measurements from Keck/NIRC2 Ms-band vortex coronagraph images, a lower absolute mass of 0.65 times that of Jupiter, at an...
21 KB (1,743 words) - 23:11, 1 March 2024
Palacios, David M.; Swartzlander, Grover A. Jr. (2005). "Optical Vortex Coronagraph". Optics Letters. 30 (24): 3308–10. Bibcode:2005OptL...30.3308F. doi:10...
22 KB (2,720 words) - 10:17, 23 May 2024
Indirect and direct observation methods such as radial velocity and coronagraphs can give envelope estimates of exoplanet parameters such as mass, planetary...
22 KB (2,668 words) - 01:09, 16 December 2023
several other types of coronagraph: Vortex, Four-Quadrant Phase Mask and 8-Octant Phase Mask versions, and a shaped pupil coronagraph. The phase I of construction...
17 KB (1,857 words) - 00:39, 21 May 2024
satellite named Aditya-L1 on 2 September 2023. Its main instrument will be a coronagraph for studying the dynamics of the solar corona. Unsolved problem in astronomy:...
166 KB (18,673 words) - 23:35, 25 May 2024
(TBD) PSLV-XL C62 Satish Dhawan ISRO PROBA-3 Coronagraph ESA Highly elliptical Solar observatory Coronagraph PROBA-3 Occulter ESA Highly elliptical Solar...
257 KB (8,629 words) - 13:18, 24 May 2024
utilizes the so-called vortex nulling properties of its Fizeau interferometry. These optics create what is called a coronagraph from the telescope primary...
17 KB (1,779 words) - 12:41, 24 August 2023