Results 191 to 200 of about 2,140 (245)

Disposable peel-away sheaths for pleural space access: a minimally invasive conduit for medical thoracoscopy and chest tube insertion. [PDF]

J Thorac Dis
Garcia Tome R, Vartanyan A, Kim C, Folch E.   +3 more
europepmc   +1 more source

Empowering Functional Independence Through Low Vision Rehabilitation in a Patient With Chronic Kidney Disease-Related Optic Neuropathy. [PDF]

Cureus
Challa NK, Elmadina AM.
europepmc   +1 more source

Astronomical Observations in Support of Planetary Entry-Probes to the Outer Planets. [PDF]

Space Sci Rev
Buratti BJ, Orton GS, Roman MT, Momary T, Bauer JM.   +4 more
europepmc   +1 more source

A transiting giant planet in orbit around a 0.2-solar-mass host star. [PDF]

Nat Astron
Bryant EM, Jordán A, Hartman JD, Bayliss D, Sedaghati E, Barkaoui K, Chouqar J, Pozuelos FJ, Thorngren DP, Timmermans M, Almenara JM, Chilingarian IV, Collins KA, Gan T, Howell SB, Narita N, Palle E, Rackham BV, Triaud AHMJ, Bakos GÁ, Brahm R, Hobson MJ, Van Eylen V, Amado PJ, Arnold L, Bonfils X, Burdanov A, Cadieux C, Caldwell DA, Casanova V, Charbonneau D, Clark CA, Collins KI, Daylan T, Dransfield G, Demory BO, Ducrot E, Fernández-Rodríguez G, Fukuda I, Fukui A, Gillon M, Gore R, Hooton MJ, Ikuta K, Jehin E, Jenkins JM, Levine AM, Littlefield C, Murgas F, Nguyen K, Parviainen H, Queloz D, Seager S, Sebastian D, Srdoc G, Vanderspek R, Winn JN, de Wit J, Zúñiga-Fernández S.   +58 more
europepmc   +1 more source

Drivers and conservation impacts of innovative tree nesting in an isolated island population of the red-billed chough. [PDF]

Ecology
Blanco G, Notario D, Palacios-Martínez I, Frías Ó, Montoya Ayala R, Carrete M.   +5 more
europepmc   +1 more source

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Collimation of Fast Wide-Field Telescopes

Publications of the Astronomical Society of the Pacific, 1996
In this paper, I present a simple technique for collimating the secondary mirror of fast focal ratio wide-field Cassegrain telescopes. This technique minimizes both coma and astigmatism across the field. Because astigmatism is nearly zero on-axis even in a misaligned system, it is necessary to make measurements off-axis.
exaly   +2 more sources

The SkyMapper wide field telescope

SPIE Proceedings, 2006
The SkyMapper wide field telescope is currently in production by EOS and is scheduled for first light in Q1 2007. This telescope will produce high quality images over a 3.4 degree diameter flat field for wavebands from 310 nm to 1000 nm. This paper discusses the optical and opto-mechanical design and tolerancing of the SkyMapper Telescope.
Andrew Rakich, Mark Blundell, Gordon Pentland, Rob Brunswick, Terry Ferguson, Jim Waltho   +5 more
openaire   +1 more source

Single-acquisition wide-field superresolution for telescopes

Applied Optics, 2016
A simple optical setup is introduced here that is capable of improving the diffraction-limited angular resolution of a telescope at minimal cost to image quality. The system consists of, at minimum, an axicon and a convex lens located in the optical path of the telescope, which can increase the angular resolution by up to 38%.
Steve, Wereley, Yuxing, Zhang, Jian-Wei, Khor, Craig, Snoeyink   +3 more
openaire   +2 more sources