Seeing the limited coupling of starlight into single‐mode fiber with a small telescope
Sign Up to like & getrecommendations! Published in 2023 at "Astronomische Nachrichten"
DOI: 10.1002/asna.20220080
Abstract: An optical fiber link to a telescope provides many advantages for spectrometers designed to detect and characterize extrasolar planets through precise radial velocity (PRV) measurements. In the seeing-limited regime, a multi-mode fiber is typically used… read more here.
Keywords: single mode; telescope; mode fiber; mode ... See more keywords
First Observations from the Multi-Application Solar Telescope (MAST) Narrow-Band Imager
Sign Up to like & getrecommendations! Published in 2017 at "Solar Physics"
DOI: 10.1007/s11207-017-1127-y
Abstract: The Multi-Application Solar Telescope is a 50 cm off-axis Gregorian telescope recently installed at the Udaipur Solar Observatory, India. In order to obtain near-simultaneous observations at photospheric and chromospheric heights, an imager optimized for two… read more here.
Keywords: application solar; multi application; imager; telescope ... See more keywords
Seeing Measurements with the Merak H$\upalpha$ Telescope
Sign Up to like & getrecommendations! Published in 2021 at "Solar Physics"
DOI: 10.1007/s11207-021-01807-3
Abstract: The parameter-search method (PSM) established by Rengaswamy, Ravindra, and Prabhu (Solar Phys. 294, 5, 2019) for measuring the terrestrial atmospheric seeing from long-exposure solar H $\upalpha$ images is further validated – through simulations – to… read more here.
Keywords: measurements merak; spread function; merak upalpha; seeing measurements ... See more keywords
Optical detection of a GMRT-detected candidate high-redshift radio galaxy with 3.6-m Devasthal optical telescope
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-019-9583-4
Abstract: We report optical observations of TGSS J1054+5832, a candidate high-redshift ($$z=4.8\pm 2$$z=4.8±2) steep-spectrum radio galaxy, in r and i bands, using the faint object spectrograph and camera mounted on 3.6-m Devasthal Optical Telescope (DOT). The… read more here.
Keywords: high redshift; galaxy; radio; telescope ... See more keywords
Science with the AstroSat Soft X-ray telescope: An overview
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-020-09678-z
Abstract: The Soft X-ray Telescope (SXT) aboard the AstroSat satellite is the first Indian X-ray telescope in space. It is a modest size X-ray telescope with a charge coupled device (CCD) camera in the focal plane,… read more here.
Keywords: telescope; astrosat soft; soft ray; ray ... See more keywords
Microdosimetry with a sealed mini-TEPC and a silicon telescope at a clinical proton SOBP of CATANA
Sign Up to like & getrecommendations! Published in 2020 at "Radiation Physics and Chemistry"
DOI: 10.1016/j.radphyschem.2020.108730
Abstract: Abstract A sealed miniaturized Tissue Equivalent Proportional Counter (mini-TEPC) able to work in gas-steady modality was developed at the Legnaro National Laboratories of the Italian National Institute of Nuclear Physics (LNL – INFN, Legnaro, Italy).… read more here.
Keywords: tepc; sobp catana; telescope; tepc silicon ... See more keywords
How the James Webb Space Telescope Can Inform Health Security
Sign Up to like & getrecommendations! Published in 2023 at "Disaster Medicine and Public Health Preparedness"
DOI: 10.1017/dmp.2022.306
Abstract: In a moment when life on Earth has felt increasingly tragic and troubling based on what has become the background noise of the continued impacts of the COVID-19 pandemic, dangerous climate change impacts, and other… read more here.
Keywords: telescope; space telescope; health security; james webb ... See more keywords
SPICA—A Large Cryogenic Infrared Space Telescope: Unveiling the Obscured Universe
Sign Up to like & getrecommendations! Published in 2018 at "Publications of the Astronomical Society of Australia"
DOI: 10.1017/pasa.2018.15
Abstract: Abstract Measurements in the infrared wavelength domain allow direct assessment of the physical state and energy balance of cool matter in space, enabling the detailed study of the processes that govern the formation and evolution… read more here.
Keywords: space; telescope; obscured universe; spica large ... See more keywords
Breakthrough Listen follow-up of the reported transient signal observed at the Arecibo Telescope in the direction of Ross 128
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Astrobiology"
DOI: 10.1017/s1473550417000465
Abstract: Abstract We undertook observations with the Green Bank Telescope, simultaneously with the 300 m telescope in Arecibo, as a follow-up of a possible flare of radio emission from Ross 128. We report here the non-detections… read more here.
Keywords: breakthrough listen; listen follow; telescope; ross 128 ... See more keywords
Radio telescope total power mode: improving observation efficiency
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202038976
Abstract: Aims. Radio observing efficiency can be improved by calibrating and reducing the observations in total power mode rather than in frequency, beam, or position-switching modes. Methods. We selected a sample of spectra obtained from the… read more here.
Keywords: total power; mode; telescope; radio telescope ... See more keywords
LISA telescope: phase noise due to pointing jitter
Sign Up to like & getrecommendations! Published in 2019 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ab3a16
Abstract: In a space based gravitational wave antenna like LISA, involving long light paths linking distant emitter/receiver spacecrafts, signal detection amounts to measuring the light-distance variations through a phase change at the receiver. This is why… read more here.
Keywords: phase noise; telescope; pointing jitter;