The design of four mirrors anti-astigmatism astronomical telescope is carried out for low earth orbit satellite. By integrating with Cassagrain and Schwartzschild configurations, the telescope is design. It contains four mirrors with conic surface, to form an aberration free. The system contains two...
When combined with nano-textured anti-reflective surfaces using the same fabrication technology, the relief gratings can serve astronomical spectroscopy needs that may be sub-optimally met or not feasible with VPHGs. We detail prototype micro-lithographic grating fabrication results in this paper.Hanshin...
(2016): Archaeoastronomical experiments supported by virtual simulation environments: Celestial alignments in the Antinoeion at Hadrian's Villa (Tivoli, Italy). Digital Applications in Archaeology and Cultural Heritage (DAACH), Vol. 3, pp. 55-79 (DOI:10.1016/j.daach.2016.06.001)....
Optical astronomical instrumentation, part 1: Conference on optical astronomical instrumentation, 26-28 March 1998, Kona, HawaiiJ.H. Bohn, R.W. Jones, J.R Leist: Sol-gel antireflective coatings for astronomical optics, Optical Astronomical Instrumentation, Proc. SPIE 3355 (1998) 962-969....
astronomical instrumentationcharged coupled devicesanti-reflection coatingsWe report two anti-reflection (AR) coatings that give better quantum efficiency (QE) than the existing AR coating on the Gaia astrometric field (AF) charged coupled devices (CCDs). Light being the core of optical astronomy is...
THE ROTATIONAL SPECTRUM OF ANTI-ETHYLAMINE (CH_3CH_2NH_2) FROM 10 TO 270 GHz: A LABORATORY STUDY AND ASTRONOMICAL SEARCH IN SGR B2(N)The pure rotational spectrum of the lowest energy (anti-) conformer of ethylamine (CH_3CH_2NH_2) has been measured in the frequency range of 10-270 ...
High-efficiency anti-reflective modification of freeform elements and cylindrical lenses for arrayed wide-field astronomical corrector unitsdoi:10.1117/1.JATIS.10.2.025007WavefrontsOptical transmissionCylindrical lensesLensesEtchingImaging systemsRelays
Gone, in the twinkling of an eye: Astronomical telescope anti-distortion technology to bring microscale observation into focusA MULTINATIONAL collaboration is to use adaptive optics - telescope technology that takes the twinkle out of star observation - and refine it for use on a microscopic level....