{ "types" : { "Bookmark" : { "pluralLabel" : "Bookmarks" }, "Publication" : { "pluralLabel" : "Publications" }, "GoldStandardPublication" : { "pluralLabel" : "GoldStandardPublications" }, "GoldStandardBookmark" : { "pluralLabel" : "GoldStandardBookmarks" }, "Tag" : { "pluralLabel" : "Tags" }, "User" : { "pluralLabel" : "Users" }, "Group" : { "pluralLabel" : "Groups" }, "Sphere" : { "pluralLabel" : "Spheres" } }, "properties" : { "count" : { "valueType" : "number" }, "date" : { "valueType" : "date" }, "changeDate" : { "valueType" : "date" }, "url" : { "valueType" : "url" }, "id" : { "valueType" : "url" }, "tags" : { "valueType" : "item" }, "user" : { "valueType" : "item" } }, "items" : [ { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/29fff435aa622990a61210bdaa831be64/asteroidguy", "tags" : [ "ATUS","astronomy","imported","myown" ], "intraHash" : "9fff435aa622990a61210bdaa831be64", "interHash" : "148372702427ee7863a751652703965b", "label" : "Stellar Occultations by Bodies in the Outer Solar System", "user" : "asteroidguy", "description" : "", "date" : "2025-12-15 18:18:21", "changeDate" : "2025-12-15 18:59:06", "count" : 1, "pub-type": "misc", "journal": "IAU General Assembly", "year": "2024", "url": "", "author": [ "Amanda Sickafoose","Elisabeth Adams","Bastian Knieling","Stephen Levine","Michael Person","Karsten Schindler","Carlos Zuluaga" ], "authors": [ {"first" : "Amanda", "last" : "Sickafoose"}, {"first" : "Elisabeth", "last" : "Adams"}, {"first" : "Bastian", "last" : "Knieling"}, {"first" : "Stephen", "last" : "Levine"}, {"first" : "Michael", "last" : "Person"}, {"first" : "Karsten", "last" : "Schindler"}, {"first" : "Carlos", "last" : "Zuluaga"} ], "abstract": "Stellar occultations are one of the most accurate, ground-based methods by which to assess physical characteristics of bodies in the outer Solar System. For example, in the trans-Neptunian region, occultation data have been used to determine object sizes and shapes at km-level accuracy, detect or place limits on microbar-level atmospheres, and discover and study rings down to km-level widths. Particularly compelling targets over the next few years include Pluto (which its thin, evolving, global atmosphere) and the trans-Neptunian objects and Centaurs for which rings have been proposed (Chariklo, Chiron, Haumea, and Quaoar). We will present recent results from stellar occultations by bodies in the outer Solar System, and we will consider the implications of large discovery surveys on future occultation efforts as well as how the technique can be used to increase their science return....", "bibcode" : "2024IAUGA..32P.999S", "bibtexKey": "sickafoose2024stellar" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2865ef5b00fbdd3c82c9750ce6653a805/asteroidguy", "tags" : [ "ATUS","SOFIA","astronomy","imported","myown" ], "intraHash" : "865ef5b00fbdd3c82c9750ce6653a805", "interHash" : "f835d4bfeb603bb750b040984548f31b", "label" : "Results from a stellar occultation by KBO Varda", "user" : "asteroidguy", "description" : "", "date" : "2025-12-15 18:18:21", "changeDate" : "2025-12-15 18:42:57", "count" : 1, "pub-type": "misc", "journal": "AGU Fall Meeting Abstracts", "year": "2019", "url": "", "author": [ "K. Schindler","A. S. Bosh","S. E. Levine","M. J. Person","J. Wolf","C. Zuluaga","A. Krabbe" ], "authors": [ {"first" : "K.", "last" : "Schindler"}, {"first" : "A. S.", "last" : "Bosh"}, {"first" : "S. E.", "last" : "Levine"}, {"first" : "M. J.", "last" : "Person"}, {"first" : "J.", "last" : "Wolf"}, {"first" : "C.", "last" : "Zuluaga"}, {"first" : "A.", "last" : "Krabbe"} ], "abstract": "We present results obtained from a stellar occultation by the classical Kuiper belt object (174567) Varda on 10 September 2018. Varda is a known binary system and among the largest TNOs known today, but has not been studied during an occultation before. Among our collaborators, 24 stations were able to acquire data at the time of the event, of which 15 obtained a clear detection, making this the best-sampled occultation of a TNO to date. As potential stellar duplicity could cause a significant shift of the ground path, we studied the target star in advance through speckle imaging with 'Alopeke at Gemini North. The reconstructed shape is an ellipsoid, which supports Varda's status as a dwarf planet candidate. Albeit slightly smaller, the calculated size is in agreement with the radiometric diameter based on Herschel/PACS FIR measurements. Post-event analysis of the dataset obtained at DCT revealed a faint, unresolved companion or background star very close to the target, which was well under the detection limit of our speckle imager data, but had practically no effect on the predicted path. No atmosphere has been detected. The occultation helped to constrain size and albedo, which in turn helps to better constrain Varda's density....", "bibcode" : "2019AGUFM.P42C..08S", "bibtexKey": "schindler2019results" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/29a1f4889915df2df5f014ffda59085bb/asteroidguy", "tags" : [ "ATUS","astronomy","imported","myown" ], "intraHash" : "9a1f4889915df2df5f014ffda59085bb", "interHash" : "89b0dfdf7b284bb2b01a83cfef06ff1a", "label" : "Pluto's Atmosphere Persists", "user" : "asteroidguy", "description" : "", "date" : "2025-12-15 18:18:21", "changeDate" : "2025-12-15 18:41:10", "count" : 1, "pub-type": "misc", "journal": "AAS/Division for Planetary Sciences Meeting Abstracts", "year": "2023", "url": "", "author": [ "Amanda Sickafoose","Michael Person","Carlos Zuluaga","Amanda Bosh","Stephen Levine","Tim Brothers","Bastian Knieling","Tim Lister","David Osip","Patricio Rojo","Karsten Schindler","Joseph Brimacombe","Timothy Carruthers","Abigail Colclasure","Petro Janse van Rensburg","Anja Genade","Stephen Potter" ], "authors": [ {"first" : "Amanda", "last" : "Sickafoose"}, {"first" : "Michael", "last" : "Person"}, {"first" : "Carlos", "last" : "Zuluaga"}, {"first" : "Amanda", "last" : "Bosh"}, {"first" : "Stephen", "last" : "Levine"}, {"first" : "Tim", "last" : "Brothers"}, {"first" : "Bastian", "last" : "Knieling"}, {"first" : "Tim", "last" : "Lister"}, {"first" : "David", "last" : "Osip"}, {"first" : "Patricio", "last" : "Rojo"}, {"first" : "Karsten", "last" : "Schindler"}, {"first" : "Joseph", "last" : "Brimacombe"}, {"first" : "Timothy", "last" : "Carruthers"}, {"first" : "Abigail", "last" : "Colclasure"}, {"first" : "Petro", "last" : "Janse van Rensburg"}, {"first" : "Anja", "last" : "Genade"}, {"first" : "Stephen", "last" : "Potter"} ], "abstract": "Pluto has a tenuous atmosphere with microbar-level surface pressure, composed primarily of nitrogen and containing a layered haze made of organic materials. An eccentric orbit combined with high obliquity leads to significant changes in solar insolation at different latitudes throughout the Plutonian year. Because the atmosphere is supported through vapor-pressure equilibrium with the surface ices, changes in surface conditions are intimately linked with the properties of the atmosphere. Thermophysical, volatile-transport models have been employed to anticipate Pluto's atmospheric evolution: predictions include atmospheric contraction or even collapse over the coming decades as well as an atmosphere that remains through the entire 248-yr revolution around the Sun (e.g. Young, 2013, ApJ Lett., 766, L22; Hansen et al. 2015, Icarus, 246, 183; Bertrand et al. 2018, Icarus, 309, 277; Johnson et al. 2021, Icarus, 356, id.114070). Previous work reported that Pluto's atmospheric pressure has been monotonically increasing since its definitive discovery in 1988 through 2016 (Meza et al. 2019, A&A, 625, id.A136) and then that the atmosphere had possibly begun freezing out in 2018-2019 (Arimatsu et al. 2020, A&A 638, L5; Young et al. 2021, AAS DPS Meeting #53, id.307.06). Observations of an occultation in 2020 did not show a pressure drop and were interpreted to be either a continued pressure increase (Poro et al. 2021, A&A, 652, L7) or a plateau phase (Sicardy et al. 2021, ApJ Lett, 923, L31). Here, we report results from nine successfully-observed stellar occultations by Pluto between 2017 August and 2022 August. The stellar magnitudes ranged from G=12.91 to 17.76 with geocentric relative velocities between 1.7 and 24.3 km/s. Four of these events had successful chords from multiple sites, while five events were from single sites. Our results indicate that Pluto's atmospheric pressure has been roughly holding steady since the New Horizons spacecraft flyby in 2015 and does not show any signs of collapse as of August 2022....", "bibcode" : "2023DPS....5530802S", "bibtexKey": "sickafoose2023plutos" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2dfebe353b8c5126edd9d738c926da6f0/asteroidguy", "tags" : [ "ATUS","astronomy","imported","myown" ], "intraHash" : "dfebe353b8c5126edd9d738c926da6f0", "interHash" : "f9b7e3c0c5b5df293015240a9bbfc5ff", "label" : "Doomed Worlds. II. Reassessing Suggestions of Orbital Decay for TrES-5 b", "user" : "asteroidguy", "description" : "", "date" : "2025-12-15 18:18:21", "changeDate" : "2025-12-15 18:38:13", "count" : 2, "pub-type": "article", "journal": "The Planetary Science Journal", "year": "2025", "url": "https://doi.org/10.3847/PSJ/ae1b9c", "author": [ "Marvin Rothmeier","Elisabeth R. Adams","Karsten Schindler","André Beck","Brian Jackson","Jeffrey P. Morgenthaler","Amanda A. Sickafoose","Malia Barker","Luigi Mancini","John Southworth","Daniel Evans","Alfred Krabbe" ], "authors": [ {"first" : "Marvin", "last" : "Rothmeier"}, {"first" : "Elisabeth R.", "last" : "Adams"}, {"first" : "Karsten", "last" : "Schindler"}, {"first" : "André", "last" : "Beck"}, {"first" : "Brian", "last" : "Jackson"}, {"first" : "Jeffrey P.", "last" : "Morgenthaler"}, {"first" : "Amanda A.", "last" : "Sickafoose"}, {"first" : "Malia", "last" : "Barker"}, {"first" : "Luigi", "last" : "Mancini"}, {"first" : "John", "last" : "Southworth"}, {"first" : "Daniel", "last" : "Evans"}, {"first" : "Alfred", "last" : "Krabbe"} ], "doi" : "10.3847/PSJ/ae1b9c", "bibtexKey": "rothmeier2025doomed" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2ddf8fc8a9d7df3c0b78fce0f0d02dd80/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "ddf8fc8a9d7df3c0b78fce0f0d02dd80", "interHash" : "17fdbaf402bfb1b7478e0a06dda75dff", "label" : "Stellar Occultations by Pluto: 2017--2018", "user" : "asteroidguy", "description" : "", "date" : "2019-11-27 10:00:03", "changeDate" : "2025-12-15 18:44:02", "count" : 1, "pub-type": "article", "journal": "Pluto System After New Horizons, held 14-18 July, 2019 in Laurel, Maryland", "year": "2019", "url": "https://www.hou.usra.edu/meetings/plutosystem2019/pdf/7026.pdf", "author": [ "A. A. Sickafoose","A. S. Bosh","S. E. Levine","M. J. Person","K. Schindler","C. A. Zuluaga" ], "authors": [ {"first" : "A. A.", "last" : "Sickafoose"}, {"first" : "A. S.", "last" : "Bosh"}, {"first" : "S. E.", "last" : "Levine"}, {"first" : "M. J.", "last" : "Person"}, {"first" : "K.", "last" : "Schindler"}, {"first" : "C. A.", "last" : "Zuluaga"} ], "volume": "LPI Contribution 2133","pages": "7026", "bibtexKey": "sickafoose2019stellar" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/25b8cba15e86288269b9fac8d9fd37bb9/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "5b8cba15e86288269b9fac8d9fd37bb9", "interHash" : "618e2bb668d1cc18561b223efabe0f5d", "label" : "The 2017 occultation by Vanth: a revised analysis", "user" : "asteroidguy", "description" : "", "date" : "2018-10-30 19:29:39", "changeDate" : "2025-12-15 18:44:10", "count" : 1, "pub-type": "article", "booktitle": "AAS/Division for Planetary Sciences Meeting Abstracts", "year": "2018", "url": "https://ui.adsabs.harvard.edu/abs/2018DPS....5050202S/abstract", "author": [ "A. S. Bosh","A. A. Sickafoose","S. E. Levine","C. A. Zuluaga","A. Genade","K. Schindler","T. A. Lister","M. J. Person" ], "authors": [ {"first" : "A. S.", "last" : "Bosh"}, {"first" : "A. A.", "last" : "Sickafoose"}, {"first" : "S. E.", "last" : "Levine"}, {"first" : "C. A.", "last" : "Zuluaga"}, {"first" : "A.", "last" : "Genade"}, {"first" : "K.", "last" : "Schindler"}, {"first" : "T. A.", "last" : "Lister"}, {"first" : "M. J.", "last" : "Person"} ], "volume": "50","pages": "311.01", "bibtexKey": "Bosh2018" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2f4794e0fa605f7c6e3ef80a40ccdff1b/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "f4794e0fa605f7c6e3ef80a40ccdff1b", "interHash" : "066b8db6494602f04a30696f504a070a", "label" : "Pluto's atmosphere after New Horizons: results from stellar occultations in 2017 and 2018", "user" : "asteroidguy", "description" : "", "date" : "2018-10-30 19:19:32", "changeDate" : "2025-12-15 18:44:18", "count" : 1, "pub-type": "article", "booktitle": "AAS/Division for Planetary Sciences Meeting Abstracts", "year": "2018", "url": "https://ui.adsabs.harvard.edu/abs/2018DPS....5050202S/abstract", "author": [ "A. A. Sickafoose","S. E. Levine","A. S. Bosh","C. A. Zuluaga","M. J. Person","K. Schindler" ], "authors": [ {"first" : "A. A.", "last" : "Sickafoose"}, {"first" : "S. E.", "last" : "Levine"}, {"first" : "A. S.", "last" : "Bosh"}, {"first" : "C. A.", "last" : "Zuluaga"}, {"first" : "M. J.", "last" : "Person"}, {"first" : "K.", "last" : "Schindler"} ], "volume": "50","pages": "502.02", "bibtexKey": "Sickafoose2018" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/22467603d3154bf55e75f0773973c4eb6/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "2467603d3154bf55e75f0773973c4eb6", "interHash" : "86e34e622381c921e66b20b861af8bd9", "label" : "A stellar occultation by Vanth, a satellite of (90482) Orcus", "user" : "asteroidguy", "description" : "", "date" : "2018-10-22 08:12:12", "changeDate" : "2025-12-15 18:44:25", "count" : 2, "pub-type": "article", "journal": "Icarus", "year": "2019", "url": "https://arxiv.org/abs/1810.08977", "author": [ "A. A. Sickafoose","A. S. Bosh","S. E. Levine","C. A. Zuluaga","A. Genade","K. Schindler","T. A. Lister","M. J. Person" ], "authors": [ {"first" : "A. A.", "last" : "Sickafoose"}, {"first" : "A. S.", "last" : "Bosh"}, {"first" : "S. E.", "last" : "Levine"}, {"first" : "C. A.", "last" : "Zuluaga"}, {"first" : "A.", "last" : "Genade"}, {"first" : "K.", "last" : "Schindler"}, {"first" : "T. A.", "last" : "Lister"}, {"first" : "M. J.", "last" : "Person"} ], "volume": "319","pages": "657-668", "doi" : "10.1016/j.icarus.2018.10.016", "bibtexKey": "Sickafoose2019" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/22d9561bf5925d1e85312b42f4a639a93/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "2d9561bf5925d1e85312b42f4a639a93", "interHash" : "8a47351824a7754393583539078d3aa1", "label" : "A 2017 stellar occultation by Orcus/Vanth", "user" : "asteroidguy", "description" : "", "date" : "2017-10-23 07:56:29", "changeDate" : "2025-12-15 18:44:34", "count" : 1, "pub-type": "article", "booktitle": "AAS/Division for Planetary Sciences Meeting Abstracts", "year": "2017", "url": "https://ui.adsabs.harvard.edu/abs/2017DPS....4921602S/abstract", "author": [ "A. A. Sickafoose","A. S. Bosh","S. E. Levine","C. A. Zuluaga","A. Genade","K. Schindler","T. A. Lister","M. J. Person" ], "authors": [ {"first" : "A. A.", "last" : "Sickafoose"}, {"first" : "A. S.", "last" : "Bosh"}, {"first" : "S. E.", "last" : "Levine"}, {"first" : "C. A.", "last" : "Zuluaga"}, {"first" : "A.", "last" : "Genade"}, {"first" : "K.", "last" : "Schindler"}, {"first" : "T. A.", "last" : "Lister"}, {"first" : "M. J.", "last" : "Person"} ], "volume": "49","pages": "216.02", "bibtexKey": "Sickafoose2017" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/24dfa6c805a91b4187a36e746616bd71f/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "4dfa6c805a91b4187a36e746616bd71f", "interHash" : "f19e63c9007fdfc20aec980e1a5d8401", "label" : "Astrometry of the Orcus/Vanth occultation on UT 7 March 2017", "user" : "asteroidguy", "description" : "", "date" : "2017-10-23 07:54:21", "changeDate" : "2025-12-15 18:44:43", "count" : 1, "pub-type": "article", "booktitle": "AAS/Division for Planetary Sciences Meeting Abstracts", "year": "2017", "url": "https://ui.adsabs.harvard.edu/abs/2017DPS....4921601B/abstract", "author": [ "A. S. Bosh","C. A. Zuluaga","S. E. Levine","A. A. Sickafoose","A. Genade","K. Schindler","T. A. Lister","M. J. Person" ], "authors": [ {"first" : "A. S.", "last" : "Bosh"}, {"first" : "C. A.", "last" : "Zuluaga"}, {"first" : "S. E.", "last" : "Levine"}, {"first" : "A. A.", "last" : "Sickafoose"}, {"first" : "A.", "last" : "Genade"}, {"first" : "K.", "last" : "Schindler"}, {"first" : "T. A.", "last" : "Lister"}, {"first" : "M. J.", "last" : "Person"} ], "volume": "49","pages": "216.01", "bibtexKey": "Bosh2017" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2646f00cf1d510d7ba428007f5bb7b620/asteroidguy", "tags" : [ "ATUS" ], "intraHash" : "646f00cf1d510d7ba428007f5bb7b620", "interHash" : "31033b55e36de2d95b96a416ac5373a8", "label" : "Stuttgarter Projekt Atus: Ein ferngesteuertes Teleskop für die Uni (Stuttgart's project Atus: A remotely controlled telescope for the university)", "user" : "asteroidguy", "description" : "", "date" : "2017-06-01 10:51:42", "changeDate" : "2017-10-23 06:11:52", "count" : 1, "pub-type": "article", "journal": "Stuttgarter Zeitung", "year": "2015", "url": "http://www.stuttgarter-zeitung.de/inhalt.stuttgarter-projekt-atus-ein-ferngesteuertes-teleskop-fuer-die-uni.9beade06-aa2b-4489-ba95-e63d9c7a928e.html", "author": [ "Klaus Zintz" ], "authors": [ {"first" : "Klaus", "last" : "Zintz"} ], "volume": "13 November 2015","note": "13 November 2015", "language" : "German", "bibtexKey": "Zintz2015" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b946581e922f13dcc8cf820e03ccf103/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "b946581e922f13dcc8cf820e03ccf103", "interHash" : "719d6db879ac4ff7cf1b67a758557375", "label" : "Results from a triple chord stellar occultation and far-infrared photometry of the trans-Neptunian object (229762) 2007 UK126", "user" : "asteroidguy", "description" : "", "date" : "2017-03-21 18:35:29", "changeDate" : "2017-03-21 17:36:01", "count" : 1, "pub-type": "article", "journal": "A&A", "year": "2017", "url": "https://doi.org/10.1051/0004-6361/201628620", "author": [ "K. Schindler","J. Wolf","J. Bardecker","A. Olsen","T. Müller","C. Kiss","J. L. Ortiz","F. Braga-Ribas","J. I. B. Camargo","D. Herald","A. Krabbe" ], "authors": [ {"first" : "K.", "last" : "Schindler"}, {"first" : "J.", "last" : "Wolf"}, {"first" : "J.", "last" : "Bardecker"}, {"first" : "A.", "last" : "Olsen"}, {"first" : "T.", "last" : "Müller"}, {"first" : "C.", "last" : "Kiss"}, {"first" : "J. L.", "last" : "Ortiz"}, {"first" : "F.", "last" : "Braga-Ribas"}, {"first" : "J. I. B.", "last" : "Camargo"}, {"first" : "D.", "last" : "Herald"}, {"first" : "A.", "last" : "Krabbe"} ], "volume": "600","pages": "A12", "doi" : "10.1051/0004-6361/201628620", "bibtexKey": "Schindler2017" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2530b988ca6687d22a9dcf1c76f919084/asteroidguy", "tags" : [ "ATUS","SOFIA","myown" ], "intraHash" : "530b988ca6687d22a9dcf1c76f919084", "interHash" : "e7ba662515119ff172ad181b1ff822e7", "label" : "Deutsches SOFIA Institut (DSI) at the SOFIA Science Center: engineering and scientific contributions to the airborne observatory", "user" : "asteroidguy", "description" : "Copyright 2016 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.", "date" : "2016-10-28 22:29:33", "changeDate" : "2025-12-15 18:54:30", "count" : 2, "pub-type": "article", "journal": "Proc. SPIE", "year": "2016", "url": "https://www.dsi.uni-stuttgart.de/institut/mitarbeiter/schindler/Wolf_et_al._2016.pdf", "author": [ "Jürgen Wolf","Sebastian Colditz","Michael Lachenmann","Enrico Pfüller","Karsten Schindler","Manuel Wiedemann","Hans Zinnecker","Alfred Krabbe" ], "authors": [ {"first" : "Jürgen", "last" : "Wolf"}, {"first" : "Sebastian", "last" : "Colditz"}, {"first" : "Michael", "last" : "Lachenmann"}, {"first" : "Enrico", "last" : "Pfüller"}, {"first" : "Karsten", "last" : "Schindler"}, {"first" : "Manuel", "last" : "Wiedemann"}, {"first" : "Hans", "last" : "Zinnecker"}, {"first" : "Alfred", "last" : "Krabbe"} ], "volume": "9973","pages": "99730J-99730J-14","abstract": "The Stratospheric Observatory for Infrared Astronomy (SOFIA) is a 2.5-meter infrared telescope built into a Boeing 747SP. In 2014 SOFIA reached its \u201CFull Operational Capability\u201D milestone and nowadays takes off about three times a week to observe the infrared sky from altitudes above most of the atmosphere's water vapor content. Despite reaching this major milestone, efforts to improve the observatory's performance are continuing in many areas. The team of the Deutsches SOFIA Institut, DSI (German SOFIA Institute) at the SOFIA Science Center in Moffett Field, CA works in several engineering areas to improve the observatory's performance and its efficiency. DSI supports the allocation process of SOFIA's observation time for guest observers, provides and supports two facility science instruments and conducts an observing program of stellar occultations by small objects of the solar system. This paper summarizes results and ongoing work on a spare secondary mirror made of aluminum, the new and improved Focal Plane Imager (FPI+) that has become a facility science instrument, the Field-Imaging Far-Infrared Line Spectrometer (FIFI-LS), new cameras and optics for the Fine Field and Wide Field Imagers (FFI+ and WFI+), real-time astrometric solution of star field images, ground support equipment and astronomical observations.", "doi" : "10.1117/12.2237207", "bibtexKey": "Wolf2016" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2498653448fff5eb36493fe1792fdc617/asteroidguy", "tags" : [ "ATUS","astronomy","myown" ], "intraHash" : "498653448fff5eb36493fe1792fdc617", "interHash" : "1eb5d30503cd6bb79eee4f5875e767dc", "label" : "Asteroidal Occultation by 82 Alkmene and the Inversion Model Match", "user" : "asteroidguy", "description" : "", "date" : "2016-10-28 22:28:13", "changeDate" : "2019-11-27 09:03:07", "count" : 1, "pub-type": "article", "journal": "Minor Planet Bulletin", "year": "2015", "url": "https://ui.adsabs.harvard.edu/abs/2015MPBu...42..129T/abstract", "author": [ "B. Timerson","J. Durech","T. Beard","C. McPartlin","W. Morgan","K. Schindler","J. Wolf","J. Bardecker","W. Anderson","C. Arrowsmith","B. Gimple","C. Coburn","H. Hill","T. Smoot" ], "authors": [ {"first" : "B.", "last" : "Timerson"}, {"first" : "J.", "last" : "Durech"}, {"first" : "T.", "last" : "Beard"}, {"first" : "C.", "last" : "McPartlin"}, {"first" : "W.", "last" : "Morgan"}, {"first" : "K.", "last" : "Schindler"}, {"first" : "J.", "last" : "Wolf"}, {"first" : "J.", "last" : "Bardecker"}, {"first" : "W.", "last" : "Anderson"}, {"first" : "C.", "last" : "Arrowsmith"}, {"first" : "B.", "last" : "Gimple"}, {"first" : "C.", "last" : "Coburn"}, {"first" : "H.", "last" : "Hill"}, {"first" : "T.", "last" : "Smoot"} ], "volume": "42","pages": "129-131", "adsurl" : "http://adsabs.harvard.edu/abs/2015MPBu...42..129T", "adsnote" : "Provided by the SAO/NASA Astrophysics Data System", "bibtexKey": "Timerson2015" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/20a85c83e74fd2b2d3ea8ea3f956c9fac/asteroidguy", "tags" : [ "ATUS","SOFIA","myown" ], "intraHash" : "0a85c83e74fd2b2d3ea8ea3f956c9fac", "interHash" : "d101b4bfdad6196a739a6c97a6922014", "label" : "Computer-aided star pattern recognition with astrometry.net: in-flight support of telescope operations on SOFIA", "user" : "asteroidguy", "description" : "Copyright 2016 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.", "date" : "2016-10-28 03:31:19", "changeDate" : "2017-10-23 06:10:56", "count" : 1, "pub-type": "article", "journal": "Proc. SPIE", "year": "2016", "url": "https://www.dsi.uni-stuttgart.de/institut/mitarbeiter/schindler/Schindler_et_al._2016.pdf", "author": [ "Karsten Schindler","Dustin Lang","Liz Moore","Martin Hümmer","Jürgen Wolf","Alfred Krabbe" ], "authors": [ {"first" : "Karsten", "last" : "Schindler"}, {"first" : "Dustin", "last" : "Lang"}, {"first" : "Liz", "last" : "Moore"}, {"first" : "Martin", "last" : "Hümmer"}, {"first" : "Jürgen", "last" : "Wolf"}, {"first" : "Alfred", "last" : "Krabbe"} ], "volume": "9913","pages": "991307-991307-14","abstract": "SOFIA is an airborne observatory, operating a gyroscopically stabilized telescope with an effective aperture of 2.5 m on-board a modified Boeing 747SP. Its primary objective is to conduct observations at mid- to far-infrared wavelengths. When SOFIA opens its door to the night sky, the initial telescope pointing is estimated from the aircraft's position and heading as well as the telescope's attitude relative to the aircraft. This initial pointing estimate needs to be corrected using stars that are manually identified in tracking camera images; telescope pointing also needs to be verified and refined at the beginning of each flight leg. We report about the implementation of the astrometry.net package on the telescope operator workstations on-board SOFIA. This package provides a very robust, reliable and fast algorithm for blind astrometric image calibration. Using images from SOFIA's Wide Field Imager, we are able to display an almost instant, continuous feedback of calculated right ascension, declination and field rotation in the GUI for the telescope operator. The computer-aided recognition of star patterns will support telescope pointing calibrations in the future, further increasing the efficiency of the observatory. We also discuss other current and future use cases of the astrometry.net package in the SOFIA project and at the German SOFIA Institute (DSI).", "doi" : "10.1117/12.2231531", "bibtexKey": "Schindler2016" } ] }