SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain): a versatile and efficient low- to medium-resolution, long-slit spectrograph on the South African Astronomical Observatory's 1.9-m telescope

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dc.authoridGalan, Cezary/0000-0002-7868-5017
dc.authoridBraker, Ian/0000-0003-2783-1800
dc.authoridSEFAKO, RAMOTHOLO/0000-0003-3904-6754
dc.authoridBurleigh, Matthew/0000-0003-0684-7803
dc.authoridPienkowski, Daniel/0000-0002-2104-661X
dc.authoridWinkler, Hartmut/0000-0003-2662-0526
dc.authoridSkelton, Patricia/0000-0002-1201-371X
dc.contributor.authorCrause, Lisa A.
dc.contributor.authorGilbank, David
dc.contributor.authorvan Gend, Carel
dc.contributor.authorWorters, Hannah L.
dc.contributor.authorSass, Craig
dc.contributor.authorKotze, Enrico J.
dc.contributor.authorPotter, Stephen
dc.date.accessioned2025-01-27T21:00:05Z
dc.date.available2025-01-27T21:00:05Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe report on the extensively upgraded Cassegrain spectrograph on the South African Astronomical Observatory (SAAO) 1.9-m telescope. The introduction of new collimator and camera optics, a new detector and controller, a rear-of-slit viewing camera to facilitate acquisition, and a new instrument control and quick-look data-reduction software (to take advantage of the entire system now being governed by a programmable logic controller) has revolutionized this workhorse instrument on Africa's second largest optical telescope. The improvement in throughput over the previous incarnation of the spectrograph is similar to 50% in the red, increasing to a factor of four at the blue end. A selection of 10 surface-relief diffraction gratings is available to users, offering a variety of wavelength ranges and resolutions, with resolving powers between similar to 500 and 6500. SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain) has been scheduled for similar to 80% of the time available on the 1.9-m since being installed on the telescope in late October 2015, providing the single-object spectroscopic capability to support the broad research interests of the SAAO's local and international user community. We present an assortment of data obtained for various observing programs to demonstrate different aspects of the instrument's enhanced performance following this comprehensive upgrade. (C) 2019 Society of Photo-Optical Instrumentation Engineers (SPIE)
dc.description.sponsorshipNational Research Foundation (NRF) of South Africa; Leverhulme Trust; Polish National Science Centre grant SONATA [DEC 2015/19/D/ST9/02974]
dc.description.sponsorshipThis paper uses observations made at the South African Astronomical Observatory, which is supported by the National Research Foundation (NRF) of South Africa. We acknowledge financial assistance from the Leverhulme Trust, in the form of a Philip Leverhulme Prize, which supported JS and enabled the purchase of G13. CG and DP have been financially supported by a Polish National Science Centre grant SONATA No. DEC 2015/19/D/ST9/02974. We gratefully acknowledge John Booth's invaluable mechanical engineering insights that helped us to resolve many a tricky problem on this instrument. Close colleagues and friends of the remarkable Darragh O'Donoghue will forever wish that he was still with us and able to enjoy observing with the spectrograph's wonderful new camera optics that he designed many years ago.
dc.identifier.doi10.1117/1.JATIS.5.2.024007
dc.identifier.issn2329-4124
dc.identifier.issn2329-4221
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85069495615
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1117/1.JATIS.5.2.024007
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26935
dc.identifier.volume5
dc.identifier.wosWOS:000481881700029
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpie-Soc Photo-Optical Instrumentation Engineers
dc.relation.ispartofJournal of Astronomical Telescopes Instruments and Systems
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectspectrograph
dc.subjectCassegrain
dc.subjectSpUpNIC
dc.subjectSouth African Astronomical Observatory
dc.subjectinstrumentation
dc.titleSpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain): a versatile and efficient low- to medium-resolution, long-slit spectrograph on the South African Astronomical Observatory's 1.9-m telescope
dc.typeArticle

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