{"id":"https://openalex.org/W3101537375","doi":null,"title":"Improved Photometry for the DASCH Pipeline","display_name":"Improved Photometry for the DASCH Pipeline","publication_year":2016,"publication_date":"2016-01-01","ids":{"openalex":"https://openalex.org/W3101537375","mag":"3101537375"},"language":"en","primary_location":{"id":"pmh:oai:CiteSeerX.psu:10.1.1.769.2271","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.769.2271","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/1304.7504.pdf","raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5007127468","display_name":"Sumin Tang","orcid":"https://orcid.org/0000-0002-6225-8918","observed_orcids":["https://orcid.org/0000-0002-6225-8918"]},"institutions":[{"id":"https://openalex.org/I122411786","display_name":"California Institute of Technology","ror":"https://ror.org/05dxps055","country_code":"US","type":"education","lineage":["https://openalex.org/I122411786"]},{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I154570441","display_name":"University of California, Santa Barbara","ror":"https://ror.org/02t274463","country_code":"US","type":"education","lineage":["https://openalex.org/I154570441"]},{"id":"https://openalex.org/I4210124175","display_name":"Center for Astrophysics Harvard & Smithsonian","ror":"https://ror.org/03c3r2d17","country_code":"US","type":"education","lineage":["https://openalex.org/I103187081","https://openalex.org/I136199984","https://openalex.org/I4210124175"]},{"id":"https://openalex.org/I4405259940","display_name":"Kavli Institute for Theoretical Physics","ror":"https://ror.org/02yt0vw44","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I154570441","https://openalex.org/I4405259940"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Sumin Tang","raw_affiliation_strings":["Division of Physics, Mathematics, & Astronomy, Cali-fornia Institute of Technology, Pasadena, CA 91125, USA","Harvard - Smithsonian Center for Astrophysics, 60 Gar-den St, Cambridge, MA 02138","Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Division of Physics, Mathematics, & Astronomy, Cali-fornia Institute of Technology, Pasadena, CA 91125, USA","institution_ids":["https://openalex.org/I122411786"]},{"raw_affiliation_string":"Harvard - Smithsonian Center for Astrophysics, 60 Gar-den St, Cambridge, MA 02138","institution_ids":["https://openalex.org/I136199984","https://openalex.org/I4210124175"]},{"raw_affiliation_string":"Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106","institution_ids":["https://openalex.org/I154570441","https://openalex.org/I4405259940"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054070152","display_name":"J. E. Grindlay","orcid":"https://orcid.org/0000-0002-1323-5314","observed_orcids":["https://orcid.org/0000-0002-1323-5314"]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210124175","display_name":"Center for Astrophysics Harvard & Smithsonian","ror":"https://ror.org/03c3r2d17","country_code":"US","type":"education","lineage":["https://openalex.org/I103187081","https://openalex.org/I136199984","https://openalex.org/I4210124175"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jonathan Grindlay","raw_affiliation_strings":["Harvard - Smithsonian Center for Astrophysics, 60 Gar-den St, Cambridge, MA 02138"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard - Smithsonian Center for Astrophysics, 60 Gar-den St, Cambridge, MA 02138","institution_ids":["https://openalex.org/I136199984","https://openalex.org/I4210124175"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045033064","display_name":"E. Los","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},{"id":"https://openalex.org/I4210124175","display_name":"Center for Astrophysics Harvard & Smithsonian","ror":"https://ror.org/03c3r2d17","country_code":"US","type":"education","lineage":["https://openalex.org/I103187081","https://openalex.org/I136199984","https://openalex.org/I4210124175"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Edward Los","raw_affiliation_strings":["Harvard - Smithsonian Center for Astrophysics, 60 Gar-den St, Cambridge, MA 02138"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard - Smithsonian Center for Astrophysics, 60 Gar-den St, Cambridge, MA 02138","institution_ids":["https://openalex.org/I136199984","https://openalex.org/I4210124175"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5017223692","display_name":"M. Servillat","orcid":"https://orcid.org/0000-0001-5443-4128","observed_orcids":["https://orcid.org/0000-0001-5443-4128"]},"institutions":[{"id":"https://openalex.org/I2738703131","display_name":"Commissariat \u00e0 l'\u00c9nergie Atomique et aux \u00c9nergies Alternatives","ror":"https://ror.org/00jjx8s55","country_code":"FR","type":"government","lineage":["https://openalex.org/I2738703131"]},{"id":"https://openalex.org/I2801360556","display_name":"CEA Paris-Saclay - Etablissement de Saclay","ror":"https://ror.org/01fv25t22","country_code":"FR","type":"facility","lineage":["https://openalex.org/I2738703131","https://openalex.org/I277688954","https://openalex.org/I2801360556","https://openalex.org/I4210128565"]},{"id":"https://openalex.org/I4210086977","display_name":"Astrophysique, Instrumentation et Mod\u00e9lisation","ror":"https://ror.org/0015h8611","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I204730241","https://openalex.org/I2738703131","https://openalex.org/I4210086977","https://openalex.org/I4210148025"]},{"id":"https://openalex.org/I4210124175","display_name":"Center for Astrophysics Harvard & Smithsonian","ror":"https://ror.org/03c3r2d17","country_code":"US","type":"education","lineage":["https://openalex.org/I103187081","https://openalex.org/I136199984","https://openalex.org/I4210124175"]},{"id":"https://openalex.org/I4210128565","display_name":"CEA Paris-Saclay","ror":"https://ror.org/03n15ch10","country_code":"FR","type":"government","lineage":["https://openalex.org/I2738703131","https://openalex.org/I277688954","https://openalex.org/I4210128565"]}],"countries":["FR","US"],"is_corresponding":false,"raw_author_name":"Mathieu Servillat","raw_affiliation_strings":["AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interpr\u00e9tation Mod\u00e9lisation (AIM - UMR 7158 - UMR E 9005, \r\nex 'Astrophysique Interactions Multi-\u00e9chelles',\r\nService d'astrophysique, \r\nCEA/Saclay, \r\nOrme des Merisiers \r\nF-91191 GIF SUR YVETTE CEDEX - France)","CfA - Harvard-Smithsonian Center for Astrophysics (60 Garden Street, Cambridge, MA 02138, USA - United States)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interpr\u00e9tation Mod\u00e9lisation (AIM - UMR 7158 - UMR E 9005, \r\nex 'Astrophysique Interactions Multi-\u00e9chelles',\r\nService d'astrophysique, \r\nCEA/Saclay, \r\nOrme des Merisiers \r\nF-91191 GIF SUR YVETTE CEDEX - France)","institution_ids":["https://openalex.org/I2738703131","https://openalex.org/I2801360556","https://openalex.org/I4210086977","https://openalex.org/I4210128565"]},{"raw_affiliation_string":"CfA - Harvard-Smithsonian Center for Astrophysics (60 Garden Street, Cambridge, MA 02138, USA - United States)","institution_ids":["https://openalex.org/I4210124175"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":9,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":37,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.7445999979972839,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.7445999979972839,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12917","display_name":"Astronomy and Astrophysical Research","score":0.24379999935626984,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14163","display_name":"Astronomical Observations and Instrumentation","score":0.004000000189989805,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/kepler-field","display_name":"Kepler field","score":0.6710000038146973},{"id":"https://openalex.org/keywords/plate-defects","display_name":"plate defects","score":0.7870000004768372},{"id":"https://openalex.org/keywords/variable-star-discovery","display_name":"variable star discovery","score":0.847000002861023}],"concepts":[{"id":"https://openalex.org/C68271606","wikidata":"https://www.wikidata.org/wiki/Q625648","display_name":"Photometry (optics)","level":3,"score":0.9076766967773438},{"id":"https://openalex.org/C133725777","wikidata":"https://www.wikidata.org/wiki/Q181505","display_name":"Astrometry","level":3,"score":0.705531656742096},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.6885631084442139},{"id":"https://openalex.org/C73329638","wikidata":"https://www.wikidata.org/wiki/Q527","display_name":"Sky","level":2,"score":0.6626061201095581},{"id":"https://openalex.org/C207963374","wikidata":"https://www.wikidata.org/wiki/Q47592","display_name":"Kepler","level":3,"score":0.6130589842796326},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.559302031993866},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.5178647041320801},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.37307292222976685},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.3312828540802002},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.12780603766441345}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:CiteSeerX.psu:10.1.1.769.2271","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.769.2271","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/1304.7504.pdf","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.841.8678","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.841.8678","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"https://dash.harvard.edu/bitstream/handle/1/14068409/Tang_ImprovedPhotometry.pdf?sequence%3D1","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W2000746376","https://openalex.org/W2017807910","https://openalex.org/W2029940032","https://openalex.org/W2047493060","https://openalex.org/W2061759127","https://openalex.org/W2083217178","https://openalex.org/W2089240942","https://openalex.org/W2142238829","https://openalex.org/W2951248334","https://openalex.org/W3008945265","https://openalex.org/W3125096957","https://openalex.org/W3126052507","https://openalex.org/W4247544247"],"related_works":["https://openalex.org/W3045749753","https://openalex.org/W2016703","https://openalex.org/W3163277252","https://openalex.org/W3159693266","https://openalex.org/W2952269204","https://openalex.org/W1969108448","https://openalex.org/W3046056590","https://openalex.org/W3011255904","https://openalex.org/W7097604492","https://openalex.org/W3036980008"],"abstract_inverted_index":{"The":[0,140],"Digital":[1],"Access":[2],"to":[3,56,98,135],"a":[4,89,113],"Sky":[5],"Century@Harvard":[6],"(DASCH)":[7],"project":[8],"is":[9],"digitizing":[10],"the":[11,20,42,57,94,107,131,149,153,168,175],"~500,000":[12],"glass":[13],"plate":[14,72],"images":[15],"obtained":[16],"(full":[17],"sky)":[18],"by":[19,74,172],"Harvard":[21],"College":[22],"Observatory":[23],"from":[24,106],"1885-1992.":[25],"Astrometry":[26],"and":[27,71,78],"photometry":[28,44,105,142],"for":[29,41,52,103,112,152,167],"each":[30],"resolved":[31],"object":[32],"are":[33,127,146],"derived":[34],"with":[35],"photometric":[36,115],"rms":[37,116],"values":[38],"of":[39,68,123,156],"~0.15mag":[40],"initial":[43],"analysis":[45],"pipeline.":[46],"Here":[47],"we":[48],"describe":[49,120],"new":[50,138],"developments":[51],"DASCH":[53,132,141,157,173],"photometry,":[54],"applied":[55],"Kepler":[58,176],"field,":[59],"that":[60,126],"has":[61,100],"yielded":[62],"further":[63],"improvements,":[64],"including":[65],"better":[66],"identification":[67],"image":[69,76],"blends":[70],"defects":[73],"measuring":[75],"profiles":[77],"astrometric":[79],"deviations.":[80],"A":[81],"local":[82],"calibration":[83],"procedure":[84],"using":[85],"nearby":[86],"stars":[87],"in":[88,130,148,174,181],"similar":[90],"magnitude":[91],"range":[92],"as":[93,164,166],"program":[95],"star":[96],"(similar":[97],"what":[99],"been":[101],"done":[102],"visual":[104],"plates)":[108],"yields":[109],"additional":[110],"improvement":[111],"net":[114],"~0.1mag.":[117],"We":[118],"also":[119],"statistical":[121],"measures":[122],"light":[124],"curves":[125],"now":[128],"used":[129,147],"pipeline":[133,150],"processing":[134,151],"autonomously":[136],"identify":[137],"variables.":[139],"methods":[143],"described":[144],"here":[145],"Data":[154],"Releases":[155],"data":[158],"(Grindlay":[159],"et":[160,179],"al.":[161],"2012;":[162],"http://dasch.rc.fas.harvard.edu),":[163],"well":[165],"long-term":[169],"variables":[170],"discovered":[171],"field":[177],"(Tang":[178],"al,":[180],"preparation).":[182]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":7},{"year":2015,"cited_by_count":1}],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2020-11-23T00:00:00"}