Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Piet Fourie"'
Autor:
Lisa A. Crause, Malcolm Hendricks, S. B. Potter, John Stoffels, Sharon Mouries, Carel van Gend, Darragh O'Donoghue, Keegan Titus, Pieter Swanevelder, Egan Loubser, Deon Lategan, Piet Fourie, James O'Connor, Willie Koorts, Hannah L. Worters, Craig Sass, Geoff P. Evans, Martin Visser, Dave Carter, Alroy Daniels, Amanda A. Sickafoose, David Gilbank
Publikováno v:
SPIE Proceedings.
SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain) is the extensively upgraded Cassegrain Spectrograph on the South African Astronomical Observatory's 74-inch (1.9-m) telescope. The inverse-Cassegrain collimator mirrors and woefully inefficien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e365f5247030e1505dc968cd2e7a4767
https://doi.org/10.1117/12.2230818
https://doi.org/10.1117/12.2230818
Autor:
Piet Fourie, James O'Connor, Darragh O'Donoghue, Andrew Norton, Encarni Romero-Colmenero, Koji Mukai, Lisa A. Crause, S. B. Potter, Martin Still, Geoff Evans, David A. H. Buckley, Oliver Butters, Craig Sass
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 402:1161-1170
We report optical spectroscopy and high speed photometry and polarimetry of the INTEGRAL source IGRJ14536-5522 (=Swift J1453.4-5524). The photometry, polarimetry and spectroscopy are modulated on an orbital period of 3.1564(1) hours. Orbital circular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36b450dc5572ccd7d20f46d8c8d7a75b
https://doi.org/10.1111/j.1365-2966.2009.15944.x
https://doi.org/10.1111/j.1365-2966.2009.15944.x
Autor:
M. de Kock, L. Nel, N. Sessions, J. Brink, W. Whittaker, D. Bester, J. Stoffels, F. Osman, W. Esterhuyse, Petri Väisänen, F. van Wyk, P. Menzies, T. Tiheli, L. A. Balona, C. Gumede, P. A. Charles, D. B. Carter, J. Swiegers, R. Emmerich, Geoff Evans, S. Siyengo, S. B. Potter, C. du Plessis, L. Botha, H. Gajjar, J. W. Menzies, V. Sopela, G. Swart, D. Metcalfe, A. Riddick, Encarni Romero-Colmenero, J. Stoltz, F. Ebrahim, Freddy Marang, H. Steyn, A. Christians, Piet Fourie, A. Swat, Donal O'Donoghue, Craig Sass, David A. H. Buckley, C. Fourie, B. Meyer, H. Rall, A. Koeslag, J. O'Connor, M. Gordon, J. G. Meiring, H. Kriel, H. Schalekamp, W. P. Koorts
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 372:151-162
We describe briefly the properties of the recently completed Southern African Large Telescope (SALT), along with its first light imager SALTICAM. Using this instrument, we present 4.3 hr of high speed unfiltered photometric observations of the eclips
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d00e54612fa12d5caa1bc0c9f7e2022
https://doi.org/10.1111/j.1365-2966.2006.10834.x
https://doi.org/10.1111/j.1365-2966.2006.10834.x
Autor:
O. W. Butters, James O'Conner, L. Crause, M. Still, Piet Fourie, Andrew Norton, Craig Sass, David A. H. Buckley, Geoff Evans, S. B. Potter, Darragh O'Donoghue, Koji Mukai
Publikováno v:
SPIE Proceedings.
We report on the completion of a new 2 channel, HIgh speed Photo-POlarimeter (HIPPO) for the 1.9m optical telescope of the South African Astronomical Observatory. The instrument makes use of rapidly counter-rotating (10Hz), super-achromatic half- and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e9f90cbbdd37c446e5aca59c0a4fbe2
https://doi.org/10.1117/12.789716
https://doi.org/10.1117/12.789716
Autor:
Geoff P. Evans, Dave Carter, Willie Koorts, Chantal Petersen, Faranah Osman, Piet Fourie, James O'Connor, Hendrik Steyn, L. A. Balona, Darragh O'Donoghue
Publikováno v:
SPIE Proceedings.
SALT, the Southern African Large Telescope, is a 10-m class telescope presently under construction and designed along the lines of the Hobby-Eberly Telescope (HET) at McDonald Observatory in West Texas. The two first light instruments are a simple sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::136a837c3cad0882e9e9a3c822681088
https://doi.org/10.1117/12.552910
https://doi.org/10.1117/12.552910
Publikováno v:
7th SAGA Biennial Technical Meeting and Exhibition.
Since March 2000, the reconstructed Dual Sphere Superconducting Gravimeter (SG) with two gravity sensors is continuously recording gravity data at the newly constructed South African Geodynamic Observatory Sutherland of GFZ (SAGOS). Additionally, met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ec60f8263dd25db8e247018b039c3be
https://doi.org/10.3997/2214-4609-pdb.143.3.2
https://doi.org/10.3997/2214-4609-pdb.143.3.2