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The Sky Polarization Observatory is an experiment selected by ESA for the Early Opportunity Phase onboard the International Space Station. SPOrt is the first payload specifically designed for polarization measurements, it will provide near…

Astrophysics · Physics 2009-10-31 Michele Orsini , Ettore Carretti , Stefano Cortiglioni

The study of satellite galaxies can provide information on the merging and aggregation processes which, according to the hierarchical clustering models, form the larger spiral galaxies we observe. With the aim of testing hierarchical models…

The Cosmic Evolution Survey (COSMOS) was initiated with an extensive allocation (590 orbits in Cycles 12-13) using the Hubble Space Telescope (HST) for high resolution imaging. Here we review the characteristics of the HST imaging with the…

(abridged) The technique of gravitational microlensing is currently unique in its ability to provide a sample of terrestrial exoplanets around both Galactic disk and bulge stars, allowing to measure their abundance and determine their…

Due to the advancement of nano-satellite technology, CubeSats and fleets of CubeSats can form an alternative to high-cost large-size satellite missions with the advantage of extended spatial coverage. One of these initiatives is the…

Instrumentation and Methods for Astrophysics · Physics 2021-05-05 Kornél Kapás , Tamás Bozóki , Gergely Dálya , János Takátsy , László Mészáros , András Pál

During a tracking mode observation, every telescope with an alt-azimuthal mount shows a rotation in the field of view (FoV) due to the diurnal motion of the Earth. The angular extension of the rotation depends mainly on the time length of…

Instrumentation and Methods for Astrophysics · Physics 2022-09-21 Simone Iovenitti

Groups and clusters of galaxies are a current focus of astronomical research owing to their role in determining the environmental effects on galaxies and the constraints they provide to cosmology. The eROSITA X-ray telescope on board the…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-02 A. Finoguenov , A. Merloni , J. Comparat , K. Nandra , M. Salvato , E. Tempel , A. Raichoor , J. Richard , J. -P. Kneib , A. Pillepich , M. Sahlén , P. Popesso , P. Norberg , R. McMahon

Access to knowledge of the point spread function (PSF) of adaptive optics(AO)-assisted observations is still a major limitation when processing AO data. This limitation is particularly important when image analysis requires the use of…

Instrumentation and Methods for Astrophysics · Physics 2023-05-10 A. Lau , R. JL. Fétick , B. Neichel , O. Beltramo-Martin , T. Fusco

We report on the first results from a large-scale observing campaign aiming to use astrometric microlensing to detect and place limits on the mass of single objects, including stellar remnants. We used the Hubble Space Telescope to monitor…

Solar and Stellar Astrophysics · Physics 2017-08-02 Noé Kains , A. Calamida , K. C. Sahu , S. Casertano , J. Anderson , A. Udalski , M. Zoccali , H. Bond , M. Albrow , I. Bond , T. Brown , M. Dominik , C. Fryer , M. Livio , S. Mao , M. Rejkuba

Wings of flying animals can not only generate lift and control torques but also can sense their surroundings. Such dual functions of sensing and actuation coupled in one element are particularly useful for small sized bio-inspired robotic…

Robotics · Computer Science 2019-03-04 Zhan Tu , Fan Fei , Jian Zhang , Xinyan Deng

Collaborative path planning for robot swarms in complex, unknown environments without external positioning is a challenging problem. This requires robots to find safe directions based on real-time environmental observations, and to…

Robotics · Computer Science 2025-01-03 Chenxi Li , Weining Lu , Zhihao Ma , Litong Meng , Bin Liang

The PHOT (Portable High-Speed Occultation Telescope) systems were developed for the specific purpose of observing stellar occultations by solar system objects. Stellar occultations have unique observing constraints: they may only be…

Instrumentation and Methods for Astrophysics · Physics 2015-05-27 E. F. Young , L. A. Young , C. B. Olkin , K. Shoemaker , R. G. French , J. Regester , M. W. Buie

In the past few years, there has been a resurgence in studies towards space-based optical/infrared interferometry, particularly with the vision to use the technique to discover and characterise temperate Earth-like exoplanets around solar…

Instrumentation and Methods for Astrophysics · Physics 2023-09-27 Jonah T. Hansen , Samuel Wade , Michael J. Ireland , Tony D. Travouillon , Tiphaine Lagadec , Nicholas Herrald , Joice Mathew , Stephanie Monty , Adam D. Rains

The wide availability of Commercial Off-The-Shelf (COTS) electronics that can withstand Low Earth Orbit conditions has opened avenue for wide deployment of CubeSats and small-satellites. CubeSats thanks to their low developmental and launch…

Computer Vision and Pattern Recognition · Computer Science 2018-09-10 Steve Morad , Ravi Teja Nallapu , Himangshu Kalita , Byon Kwon , Vishnu Reddy , Roberto Furfaro , Erik Asphaug , Jekan Thangavelautham

Highly accurate models of the galaxy population over cosmological volumes are necessary in order to predict the performance of upcoming cosmological missions. We present a data-driven model of the galaxy population constrained by deep 0.1-8…

Instrumentation and Methods for Astrophysics · Physics 2016-06-22 Nathaniel R. Stickley , Peter Capak , Daniel Masters , Roland de Putter , Olivier Doré , Jamie Bock

Modern sky surveys produce vast amounts of observational data, making the application of classical methods for estimating galaxy properties challenging and time-consuming. This challenge can be significantly alleviated by employing…

Astrophysics of Galaxies · Physics 2025-09-17 Olena Torbaniuk , Lars Doorenbos , Maurizio Paolillo , Stefano Cavuoti , Massimo Brescia , Giuseppe Longo

The Virtual Telescope for X-ray Observations (VTXO) will use lightweight Phase Frensel Lenses (PFLs) in a virtual X-ray telescope with 1 km focal length and with nearly 50 milli-arcsecond angular resolution. Laboratory characterization of…

BRITE (BRIght Target Explorer) Constellation, the first nanosatellite mission applied to astrophysical research, is a collaboration among Austria, Canada and Poland. The fleet of satellites (6 launched, 5 functioning) performs precise…

Through an extensive set of realistic synthetic observations (produced in Paper I), we assess in this part of the paper series (Paper III) how the choice of observational techniques affects the measurement of star-formation rates (SFRs) in…

Solar and Stellar Astrophysics · Physics 2017-11-01 Christine M. Koepferl , Thomas P. Robitaille , James E. Dale