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A Survey and Assessment of the Capabilities of Cubesats for Earth Observation
Acta Astronautica 74 (2012) 50–68 Contents lists available at SciVerse ScienceDirect Acta Astronautica journal homepage: www.elsevier.com/locate/actaastro Review A survey and assessment of the capabilities of Cubesats for Earth observation Daniel Selva a,n, David Krejci b a Massachusetts Institute of Technology, Cambridge, MA 02139, USA b Vienna University of Technology, Vienna 1040, Austria article info abstract Article history: In less than a decade, Cubesats have evolved from purely educational tools to a standard Received 2 December 2011 platform for technology demonstration and scientific instrumentation. The use of COTS Accepted 9 December 2011 (Commercial-Off-The-Shelf) components and the ongoing miniaturization of several technologies have already led to scattered instances of missions with promising Keywords: scientific value. Furthermore, advantages in terms of development cost and develop- Cubesats ment time with respect to larger satellites, as well as the possibility of launching several Earth observation satellites dozens of Cubesats with a single rocket launch, have brought forth the potential for University satellites radically new mission architectures consisting of very large constellations or clusters of Systems engineering Cubesats. These architectures promise to combine the temporal resolution of GEO Remote sensing missions with the spatial resolution of LEO missions, thus breaking a traditional trade- Nanosatellites Picosatellites off in Earth observation mission design. This paper assesses the current capabilities of Cubesats with respect to potential employment in Earth observation missions. A thorough review of Cubesat bus technology capabilities is performed, identifying potential limitations and their implications on 17 different Earth observation payload technologies. These results are matched to an exhaustive review of scientific require- ments in the field of Earth observation, assessing the possibilities of Cubesats to cope with the requirements set for each one of 21 measurement categories. -
Near-Infrared Surface Photometry of Bulges and Disks of Spiral Galaxies
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by University of Groningen Digital Archive Near-Infrared Surface Photometry of Bulges and Disks of Spiral Galaxies. The Data R. F. Peletier1,2 M. Balcells2,1 1Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen, Netherlands 2Instituto de Astrof´ısica de Canarias,E-38200 La Laguna, Tenerife, Spain ABSTRACT We present optical and near-infrared (NIR) surface brightness and colour profiles, in bands ranging from U to K, for the disk and bulge components of a complete sample of 30 nearby S0 to Sbc galaxies with inclinations larger than 50o. We describe in detail the observations and the determination of colour parameters. Calibrated monochromatic and real-colour images are presented, as well as colour index maps. This data set, tailored for the study of the population characteristics of galaxy bulges, provides useful information on the colours of inner disks as well. In related papers, we have used them to quantify colour gradients in bulges, and age differentials between bulge and inner disk. Subject headings: Galaxies:Bulges; Galaxies:Disks; Galaxies:Ages; Galaxies:Populations 1. Introduction In a recent series of papers we analyze various structural and population parameters of the bulge component of early-to-intermediate type disk galaxies. We did this by obtaining and analyzing accurate surface photometry of a complete sample of inclined spiral galaxies. In Balcells & Peletier (1994, hereafter BP94) we derive optical colour profiles and compare mean colours and colour gradients of bulges to those of ellipticals. We find that bulges have similar or bluer colours than ellipticals of the same luminosity, implying that many bulges contain younger populations, or have lower metallicity, than corresponding ellipticals. -
ESA Solar System Missions
Small Missions and the Science Programme of ESA Alvaro Gimenez, Director of Science and Robotic Exploration 26 February 2014 2 2 Astro-H suzaku corot Science Programme building blocks “Large” (Ariane 5-class) missions 1. High innovation content 2. European flagships 3. 1 B€ class 4. 3 per 20 years Herschel XMM-Newton Rosetta BepiColombo L3 L2 JUICE BepiColombo GAIA Herschel Rosetta XMM STSP 1980 1990 2000 2010 2020 2030 2040 H2000 H2000+ CV 2040 2035 2030 2025 2020 2015 2010 2005 2000 1995 1990 0 2 4 6 8 10 Science Programme building blocks “Medium” (Soyuz-class) missions 1. Makes use of current cutting-edge technology 2. Programme workhorse 3. 500 M€ class Planck 4. 3-4 per 10 years Euclid Solar Orbiter Mars Express 2040 2030 2020 2010 2000 1990 1980 0 5 10 15 20 Science Programme building blocks Missions of Opportunity 1. Moderate-size participation of the ESA Science Programme in missions led by partners 2. Format can vary 3. Increase flight and science opportunities for European scientists COROT ASTRO-H Hinode Double Star Science Programme building blocks Small missions a. New Programme element, still “experimental” b. Fast and with ESA CaC = 0.1 yearly budget c. Increase flight opportunities for European scientists d. Example: CHEOPS PLATO EUCLID SOLAR JUICE Astro H ORBITER µSCOPE Cheops ExoMars JWST BEPI LISA PF GAIA COLOMBO Akari Proba 2 Chandrayaan PLANCK Hinode HERSCHEL COROT ROSETTA Double Star SMART INTEGRAL Suzaku 1 SOHO VENUS MARS XMM F 2 CLUSTER → EXPRESS EXPRESS NEWTON CLUSTER HUYGENS ULYSSES ISO Time II HST 2030 2025 2020 2015 2010 2005 2000 1995 1990 1985 0 2 4 6 8 10 12 Small missions a. -
Observation of Pc 3/5 Magnetic Pulsations Around the Cusp at Mid Altitude
1 OBSERVATION OF PC 3/5 MAGNETIC PULSATIONS AROUND THE CUSP AT MID ALTITUDE Liu Yonghua(1), Liu Ruiyuan(1), B. J. Fraser(2), S. T. Ables(2), Xu Zhonghua(1), Zhang Beichen(1), Shi Jiankui(3), Liu Zhenxing(3), Huang Dehong(1), Hu Zejun(1), Chen Zhuotian(1), Wang Xiao(3), Malcolm Dunlop(4), A. Balogh(5) (1) Polar Research Institute of China, 451 Jinqiao Rd., Shanghai 200136, P. R. CHINA, [email protected] (2) The University of Newcastle, University Drive, Callaghan NSW 2308, AUSTRALIA, [email protected] (3)The Center of Space Science & Applied Research, Chinese Academy of Science, Post Box8701, Beijing 100080, jkshi@@center.cssar.ac.cn (4) The Rutherford Appleton Laboratory, Chilton, DIDCOT, Oxfordshire, OX11 0QX, UK, [email protected] (5)Space and Atmospheric Physics Group, Imperial College, London, [email protected] ABSTRACT transmitted straightforwardly from solar wind to the ionosphere (Bolshakova & Troitskaia, 1984). So far most Since launched in year 2000 the Cluster mission has research work on such topic are on basis of observation passed the region around the cusp at mid-altitude (~6Re) at ground or/and data from satellite located in the for many times, where ULF wave activities are rich in. upstream of solar wind or in the magnetosheath. To my From 0800 to 1300UT on October 30 2002 the Cluster knowledge, few authors take a study based on the spacecrafts ran along an orbit of southern cusp- measurement at the mid-altitude of the cusp. It seems plasmasphere-northern cusp that provides an excellent reasonable to assume that such a measurement be a direct observation of ULF waves in dayside magnetosphere. -
China's Space Industry and International Collaboration
China’s Space Industry and International Collaboration Presenter: Ju Jin Title: Minister Counselor,the Embassy of P.R.China Date: Feb 27,2008 Brief History • 52 years since 1956, first space institute established • Learning from Soviet Union until 1960 • U.S.A.’s close door policy until now • China’s self-reliance Policy Major Achievements • 12 series of Long March Launching Rockets • >100 Launches • >80 satellites in remote sensing, telecommunication, GPS, scientific experiment • Manned space flights——Shenzhou 5 (2003) and Shenzhou 6 (2005) • Lunar Exploration Project——Chang’e 1 (2007) LM-2F Launch Vehicle • Stages 1 & 2 & 4 strap-on boosters • 58.3 meters long • Launch Mass: 480 tons • Total Thrust : 600 tons • Reliability & Safety Index: 0.97 & 0.997 • 10 Sub-Systems Manned Space Flight--Shenzhou 6 Manned Space Flight--Shenzhou 6 Lunar Probe Project--Change-1 First Lunar Surface Photos Lunar Probe Project—Change 1 • 3 Years • 17,000 Scientists and Engineers • Young Team averaged in the age of 30s • 100% China-Made • Technology Breakthroughs – All-direction Antenna – Ultra-violet Sensor International Exchange and Cooperation: Main Activities Over the recent years, China has signed cooperation agreements on the peaceful use of outer space and space project cooperation agreements with Argentina, Brazil, Canada, France, Malaysia, Pakistan, Russia, Ukraine, the ESA and the European Commission, and has established space cooperation subcommittee or joint commission mechanisms with Brazil, France, Russia and Ukraine. China and the ESA z Sino-ESA Double Star Satellite Exploration of the Earth's Space Plan. z "Dragon Program," involving cooperation in Earth observation satellites, having so far conducted 16 remote-sensing application projects in the fields of agriculture, forestry, water conservancy, meteorology, oceanography and disasters. -
Messier Plus Marathon Text
Messier Plus Marathon Object List by Wally Brown & Bob Buckner with additional objects by Mike Roos Object Data - Saguaro Astronomy Club Score is most numbered objects in a single night. Tiebreaker is count of un-numbered objects Observer Name Date Address Marathon Obects __________ Tiebreaker Objects ________ SEQ OBJECT TYPE CON R.A. DEC. RISE TRANSIT SET MAG SIZE NOTES TIME M 53 GLOCL COM 1312.9 +1810 7:21 14:17 21:12 7.7 13.0' NGC 5024, !B,vC,iR,vvmbM,st 12.. NGC 5272, !!,eB,vL,vsmbM,st 11.., Lord Rosse-sev dark 1 M 3 GLOCL CVN 1342.2 +2822 7:11 14:46 22:20 6.3 18.0' marks within 5' of center 2 M 5 GLOCL SER 1518.5 +0205 10:17 16:22 22:27 5.7 23.0' NGC 5904, !!,vB,L,eCM,eRi, st mags 11...;superb cluster M 94 GALXY CVN 1250.9 +4107 5:12 13:55 22:37 8.1 14.4'x12.1' NGC 4736, vB,L,iR,vsvmbM,BN,r NGC 6121, Cl,8 or 10 B* in line,rrr, Look for central bar M 4 GLOCL SCO 1623.6 -2631 12:56 17:27 21:58 5.4 36.0' structure M 80 GLOCL SCO 1617.0 -2258 12:36 17:21 22:06 7.3 10.0' NGC 6093, st 14..., Extremely rich and compressed M 62 GLOCL OPH 1701.2 -3006 13:49 18:05 22:21 6.4 15.0' NGC 6266, vB,L,gmbM,rrr, Asymmetrical M 19 GLOCL OPH 1702.6 -2615 13:34 18:06 22:38 6.8 17.0' NGC 6273, vB,L,R,vCM,rrr, One of the most oblate GC 3 M 107 GLOCL OPH 1632.5 -1303 12:17 17:36 22:55 7.8 13.0' NGC 6171, L,vRi,vmC,R,rrr, H VI 40 M 106 GALXY CVN 1218.9 +4718 3:46 13:23 22:59 8.3 18.6'x7.2' NGC 4258, !,vB,vL,vmE0,sbMBN, H V 43 M 63 GALXY CVN 1315.8 +4201 5:31 14:19 23:08 8.5 12.6'x7.2' NGC 5055, BN, vsvB stell. -
HST/WFPC2 Imaging of the Circumnuclear Structure of Llagns
HST/WFPC2 imaging of the circumnuclear structure of LLAGNs. I Data and nuclear morphology1 Rosa M. Gonz´alez Delgado1, Enrique P´erez1, Roberto Cid Fernandes2, Henrique Schmitt3, (1) Instituto de Astrof´ısica de Andaluc´ıa(CSIC), P.O. Box 3004, 18080 Granada, Spain ([email protected]; [email protected]) (2) Depto. de F´ısica-CFM, Universidade Federal de Santa Catarina, C.P. 476, 88040-900, Florian´opolis, SC, Brazil ([email protected]) (3) Remote Sensing Division, Naval Research Laboratory, Code 7210, 4555 Overlook Avenue, Washington, DC 20375 ([email protected]) (4) Interferometrics, Inc., 13454 Sunrise Valley Drive, Suite 240, Herndon, VA20171 ABSTRACT In several studies of Low Luminosity Active Galactic Nuclei (LLAGNs), we have characterized the properties of the stellar populations in LINERs and LINER/HII Transition Objects (TOs). We have found a numerous class of galac- tic nuclei which stand out because of their conspicuous 0.1–1 Gyr populations. These nuclei were called ”Young-TOs” since they all have TO-like emission line ratios. To advance our knowledge of the nature of the central source in LLAGNs and its relation with stellar clusters, we are carrying out several imaging projects with the Hubble Space Telescope (HST) at near-UV, optical and near-IR wave- lengths. In this paper, we present the first results obtained with observations of the central regions of 57 LLAGNs imaged with the WFPC2 through any of arXiv:0710.4450v1 [astro-ph] 24 Oct 2007 the V (F555W, F547M, F614W) and I (F791W, F814W) filters that are avail- able in the HST archive. -
LISA, the Gravitational Wave Observatory
The ESA Science Programme Cosmic Vision 2015 – 25 Christian Erd Planetary Exploration Studies, Advanced Studies & Technology Preparations Division 04-10-2010 1 ESAESA spacespace sciencescience timelinetimeline JWSTJWST BepiColomboBepiColombo GaiaGaia LISALISA PathfinderPathfinder Proba-2Proba-2 PlanckPlanck HerschelHerschel CoRoTCoRoT HinodeHinode AkariAkari VenusVenus ExpressExpress SuzakuSuzaku RosettaRosetta DoubleDouble StarStar MarsMars ExpressExpress INTEGRALINTEGRAL ClusterCluster XMM-NewtonXMM-Newton CassiniCassini-H-Huygensuygens SOHOSOHO ImplementationImplementation HubbleHubble OperationalOperational 19901990 19941994 19981998 20022002 20062006 20102010 20142014 20182018 20222022 XMM-Newton • X-ray observatory, launched in Dec 1999 • Fully operational (lost 3 out of 44 X-ray CCD early in mission) • No significant loss of performances expected before 2018 • Ranked #1 at last extension review in 2008 (with HST & SOHO) • 320 refereed articles per year, with 38% in the top 10% most cited • Observing time over- subscribed by factor ~8 • 2,400 registered users • Largest X-ray catalogue (263,000 sources) • Best sensitivity in 0.2-12 keV range • Long uninterrupted obs. • Follow-up of SZ clusters 04-10-2010 3 INTEGRAL • γ-ray observatory, launched in Oct 2002 • Imager + Spectrograph (E/ΔE = 500) + X- ray monitor + Optical camera • Coded mask telescope → 12' resolution • 72 hours elliptical orbit → low background • P/L ~ nominal (lost 4 out 19 SPI detectors) • No serious degradation before 2016 • ~ 90 refereed articles per year • Obs -
Abd Al-Rahman Al-Sufi and His Book of the Fixed Stars: a Journey of Re-Discovery
ResearchOnline@JCU This file is part of the following reference: Hafez, Ihsan (2010) Abd al-Rahman al-Sufi and his book of the fixed stars: a journey of re-discovery. PhD thesis, James Cook University. Access to this file is available from: http://eprints.jcu.edu.au/28854/ The author has certified to JCU that they have made a reasonable effort to gain permission and acknowledge the owner of any third party copyright material included in this document. If you believe that this is not the case, please contact [email protected] and quote http://eprints.jcu.edu.au/28854/ 5.1 Extant Manuscripts of al-Ṣūfī’s Book Al-Ṣūfī’s ‘Book of the Fixed Stars’ dating from around A.D. 964, is one of the most important medieval Arabic treatises on astronomy. This major work contains an extensive star catalogue, which lists star co-ordinates and magnitude estimates, as well as detailed star charts. Other topics include descriptions of nebulae and Arabic folk astronomy. As I mentioned before, al-Ṣūfī’s work was first translated into Persian by al-Ṭūsī. It was also translated into Spanish in the 13th century during the reign of King Alfonso X. The introductory chapter of al-Ṣūfī’s work was first translated into French by J.J.A. Caussin de Parceval in 1831. However in 1874 it was entirely translated into French again by Hans Karl Frederik Schjellerup, whose work became the main reference used by most modern astronomical historians. In 1956 al-Ṣūfī’s Book of the fixed stars was printed in its original Arabic language in Hyderabad (India) by Dārat al-Ma‘aref al-‘Uthmānīa. -
Nuclear Properties of Nearby Spiral Galaxies from Hubble Space Telescope NICMOS Imaging and STIS Spectroscopy
Nuclear Properties of Nearby Spiral Galaxies from Hubble Space Telescope NICMOS imaging and STIS Spectroscopy.1 M. A. Hughes1, D. Axon11, J. Atkinson1, A. Alonso-Herrero2, C. Scarlata7, A. Marconi4, D. Batcheldor1, J. Binney6, A. Capetti5, C. M. Carollo7, L. Dressel3, J. Gerssen12, D. Macchetto3, W. Maciejewski4,10, M. Merrifield8, M. Ruiz1, W. Sparks3, M. Stiavelli3, Z. Tsvetanov9, ABSTRACT We investigate the central regions of 23 spiral galaxies using archival NICMOS imag- ing and STIS spectroscopy. The sample is taken from our program to determine the masses of central massive black holes (MBH) in 54 nearby spiral galaxies. Stars are likely to contribute significantly to any dynamical central mass concentration that we find in our MBH program and this paper is part of a series to investigate the nuclear properties of these galaxies. We use the Nuker law to fit surface brightness profiles, derived from the NICMOS images, to look for nuclear star clusters and find possible extended sources in 3 of the 23 galaxies studied (13 per cent). The fact that this fraction is lower than that inferred from optical Hubble Space Telescope studies is probably due to the greater spatial resolution of those studies. Using R-H and J-H colors and equiv- alent widths of Hα emission (from the STIS spectra) we investigate the nature of the stellar population with evolutionary models. Under the assumption of hot stars ionizing the gas, as opposed to a weak AGN, we find that there are young stellar populations (∼10–20 Myr) however these data do not allow us to determine what percentage of the 1Centre for Astrophysical Research, STRI, University of Hertfordshire, Hatfield, Hertfordshire, AL10 9AB, UK. -
Artificial Intelligence for Small Satellites Mission Autonomy.Pdf
POLITECNICO DI TORINO Repository ISTITUZIONALE Artificial Intelligence for Small Satellites Mission Autonomy Original Artificial Intelligence for Small Satellites Mission Autonomy / Feruglio, Lorenzo. - (2017 Dec 11). Availability: This version is available at: 11583/2694565 since: 2017-12-12T12:02:11Z Publisher: Politecnico di Torino Published DOI:10.6092/polito/porto/2694565 Terms of use: Altro tipo di accesso This article is made available under terms and conditions as specified in the corresponding bibliographic description in the repository Publisher copyright (Article begins on next page) 11 October 2021 Doctoral Dissertation Doctoral Program in Aerospace Engineering (29 th Cycle) Artificial Intelligence for Small Satellites Mission Autonomy By Lorenzo Feruglio ****** Supervisor: Prof. S. Corpino Doctoral Examination Committee: Prof. Franco Bernelli Zazzera, Referee, Politecnico di Milano Prof. Michèle Roberta Jans Lavagna, Referee, Politecnico di Milano Prof. Giancarmine Fasano, Referee, Università di Napoli Federico II Prof. Paolo Maggiore, Referee, Politecnico di Torino Prof. Nicole Viola, Referee, Politecnico di Torino Politecnico di Torino 2017 Declaration I hereby declare that, the contents and organization of this dissertation constitute my own original work and does not compromise in any way the rights of third parties, including those relating to the security of personal data. Lorenzo Feruglio 2017 * This dissertation is presented in partial fulfilment of the requirements for Ph.D. degree in the Graduate School of Politecnico di Torino (ScuDo). A mia mamma, mio papà, mio fratello. Grazie per esserci sempre stati, per essere stati delle guide incredibili. Grazie Acknowledgment I would like to acknowledge and thank a great number of people: not everyone can be included here, but I’m sure the people I would like to thank already know I’m grateful to them. -
Sky & Telescope
Eclipse from the See Sirius B: The Nearest Spot the Other EDGE OF SPACE p. 66 WHITE DWARF p. 30 BLUE PLANETS p. 50 THE ESSENTIAL GUIDE TO ASTRONOMY What Put the Bang in the Big Bang p. 22 Telescope Alignment Made Easy p. 64 Explore the Nearby Milky Way p. 32 How to Draw the Moon p. 54 OCTOBER 2013 Cosmic Gold Rush Racing to fi nd exploding stars p. 16 Visit SkyandTelescope.com Download Our Free SkyWeek App FC Oct2013_J.indd 1 8/2/13 2:47 PM “I can’t say when I’ve ever enjoyed owning anything more than my Tele Vue products.” — R.C, TX Tele Vue-76 Why Are Tele Vue Products So Good? Because We Aim to Please! For over 30-years we’ve created eyepieces and telescopes focusing on a singular target; deliver a cus- tomer experience “...even better than you imagined.” Eyepieces with wider, sharper fields of view so you see more at any power, Rich-field refractors with APO performance so you can enjoy Andromeda as well as Jupiter in all their splendor. Tele Vue products complement each other to pro- vide an observing experience as exquisite in performance as it is enjoyable and effortless. And how do we score with our valued customers? Judging by superlatives like: “in- credible, truly amazing, awesome, fantastic, beautiful, work of art, exceeded expectations by a mile, best quality available, WOW, outstanding, uncom- NP101 f/5.4 APO refractor promised, perfect, gorgeous” etc., BULLSEYE! See these superlatives in with 110° Ethos-SX eye- piece shown on their original warranty card context at TeleVue.com/comments.