標(biāo)題: Titlebook: Digitised Optical Sky Surveys; Proceedings of the C H. T. MacGillivray,E. B. Thomson Conference proceedings 1992 Springer Science+Business [打印本頁] 作者: CRUST 時(shí)間: 2025-3-21 17:56
書目名稱Digitised Optical Sky Surveys影響因子(影響力)
作者: Alveoli 時(shí)間: 2025-3-21 23:22 作者: 癡呆 時(shí)間: 2025-3-22 04:24 作者: 調(diào)整校對(duì) 時(shí)間: 2025-3-22 06:28
Preface to the First and Second Edition0 mm., typical astrograph plates (measuring area ≈ 220 × 220 mm.) can be digitised in about 30 minutes. First measuring programs will concentrate on the Hipparcos groundbased extragalactic reference link and various catalogues, in particular remeasurement of AC zones and the AGK2 plates.作者: 文字 時(shí)間: 2025-3-22 12:35
The Deep 2-Micron Survey of the Southern Sky in the J (1.25 μm) and K (2.2 μm) bands with a pixel size of 3″. An optical band, I (0.9μm), with a better spatial resolution will be also included. The survey will be done on the 1 meter ESO telescope, with a camera using 256×256 . arrays.作者: Focus-Words 時(shí)間: 2025-3-22 13:23 作者: Focus-Words 時(shí)間: 2025-3-22 19:33
The MAMA Facility: A Survey of Scientific Programmessystematic way by lanes 10.24 mm wide, or in a random access mode from a catalogue of preliminary positions. The basic pixel size (and sampling step) is 10μm. Oversampling down to 2μm can be used to digitise spectra; for some applications, pixels of 20, 30… 80 μm can be synthesized in real time.作者: Iniquitous 時(shí)間: 2025-3-23 00:23
A New Astrometric Measuring Machine: Design and Astronomical Programmes0 mm., typical astrograph plates (measuring area ≈ 220 × 220 mm.) can be digitised in about 30 minutes. First measuring programs will concentrate on the Hipparcos groundbased extragalactic reference link and various catalogues, in particular remeasurement of AC zones and the AGK2 plates.作者: 楓樹 時(shí)間: 2025-3-23 03:38 作者: AGONY 時(shí)間: 2025-3-23 07:40
Photometric Calibration of the Southern Sky Surveys large-scale structure of the universe, galaxy evolution, quasar surveys, galactic structure, rare-object searches, and optical identifications of objects in surveys at other wavebands, such as the ROSAT, MIT/Parkes, and IRAS surveys.作者: 大門在匯總 時(shí)間: 2025-3-23 11:41 作者: Feckless 時(shí)間: 2025-3-23 14:46 作者: set598 時(shí)間: 2025-3-23 18:46 作者: infarct 時(shí)間: 2025-3-24 01:19 作者: 泥土謙卑 時(shí)間: 2025-3-24 05:03
Wesley T. Huntress Jr.,Mikhail Ya. Marovof images characteristic of the imaging process in the absence of noise and by examining the properties of object inventories for a test field digitized at a range of sampling intervals. Both analyses indicate that 15μm is an adequate sampling interval for modern Schmidt plates on Type III emulsions.作者: 令人苦惱 時(shí)間: 2025-3-24 09:34 作者: Hemiplegia 時(shí)間: 2025-3-24 12:23 作者: 外星人 時(shí)間: 2025-3-24 18:13 作者: 適宜 時(shí)間: 2025-3-24 22:25
0067-0057 gitised sky atlases, to archive the digitisedmaterial, to develop sophisticated devices to do the digitising, andto create software to procecc the vast amounts of data. All theseactivities are necessary to be able to do astronomy. .One such activity is the important, large-scale optical identificati作者: PET-scan 時(shí)間: 2025-3-25 02:13
,‘Squirrel Cage’ Electrical Motors, large-scale structure of the universe, galaxy evolution, quasar surveys, galactic structure, rare-object searches, and optical identifications of objects in surveys at other wavebands, such as the ROSAT, MIT/Parkes, and IRAS surveys.作者: 無意 時(shí)間: 2025-3-25 07:00 作者: 祝賀 時(shí)間: 2025-3-25 10:51
Next Generation Optical Sky Surveysocessing sky surveys already exist and the scientific returns would be enormous: ranging from Solar System studies, such as searches for primordial comets, out to searches for the most distant objects in the Universe, such as high redshift quasars and primordial galaxies.作者: 吞下 時(shí)間: 2025-3-25 14:32 作者: BOOR 時(shí)間: 2025-3-25 18:43 作者: tangle 時(shí)間: 2025-3-25 22:38
The Selection of a Sampling Interval for Digitisation: How Fine is Fine Enough?of images characteristic of the imaging process in the absence of noise and by examining the properties of object inventories for a test field digitized at a range of sampling intervals. Both analyses indicate that 15μm is an adequate sampling interval for modern Schmidt plates on Type III emulsions.作者: 使成波狀 時(shí)間: 2025-3-26 01:26 作者: 連系 時(shí)間: 2025-3-26 08:17
Astrophysics and Space Science Libraryhttp://image.papertrans.cn/e/image/280415.jpg作者: LEVY 時(shí)間: 2025-3-26 09:52 作者: AGOG 時(shí)間: 2025-3-26 14:47 作者: aggrieve 時(shí)間: 2025-3-26 19:21 作者: adj憂郁的 時(shí)間: 2025-3-27 00:37
The Establishment of Official Rural Policy which form them. Aratus’ survey is based on one now lost, by Eudoxus, who visited Alexandria for the purpose of examining the records of observations kept in the library and for consultations with the community of scholars there — these observations were originally made about 2000 BC, perhaps from Minos in Crete.作者: Herbivorous 時(shí)間: 2025-3-27 01:16 作者: 憤慨一下 時(shí)間: 2025-3-27 08:45
Wesley T. Huntress Jr.,Mikhail Ya. Marov, to supporting the use of Hubble Space Telescope (HST) by providing guide stars for pointing and calibrated images for observation-planning, and, on the scientific side, to applying the same resources to selected programs in community service and astrophysics.作者: 千篇一律 時(shí)間: 2025-3-27 11:17 作者: Stagger 時(shí)間: 2025-3-27 14:48
The Onset of Rural Transformationy meant the grandfather but was too tactful to say so! I hope you will allow me to reminisce a little on family matters; it was of course a wider family, with a growing number of aunts and uncles to teach the children how to behave; I shall mention some of them.作者: 切掉 時(shí)間: 2025-3-27 20:42 作者: Inclement 時(shí)間: 2025-3-28 01:52
Soviet Power: The Continuing Challengeange 10–100μm. During the last recent years, the performance of 2-D infrared receptors at wavelengths ≥ 1μm has been greatly improved, and has become comparable to optical CCDs. This permits us to envisage a digital sky survey in the near infrared. The absence of the equivalent to Schmidt plates has作者: Stress-Fracture 時(shí)間: 2025-3-28 02:49
Perceptions of Soviet Power and Influenceon La Palma, a dramatic advance in optical sky surveys would be possible. With such a system, a deep CCD-based sky survey in several optical passbands over several hundred square degrees could be achieved using an existing medium sized telescope at modest cost. The key technology and expertise in pr作者: 交響樂 時(shí)間: 2025-3-28 09:52 作者: 公式 時(shí)間: 2025-3-28 12:31
Soviet Railways to Russian Railwaysdown to the plate limits of the 1950 POSS E plates and the SERC J plates (V ≈ 21). In addition, multi-bandpass and multi-epoch data will be added as current epoch surveys in both hemispheres become available in digitized format. In order to provide accurate photometric calibration for GSC-II, the Sp作者: PET-scan 時(shí)間: 2025-3-28 15:55 作者: 方便 時(shí)間: 2025-3-28 20:47
The Electroluminescence of Zinc Sulfidethe laser spot and a beam splitter to produce a pair of spots which scan across a pair of plates. It scans a pair of plates in this mode in four hours with 1 micron repeatability. The APS is currently being used to scan the 936 pairs of plates comprising the Palomar Observatory-National Geographic S作者: 生氣地 時(shí)間: 2025-3-29 00:37
Wesley T. Huntress Jr.,Mikhail Ya. Marov, to supporting the use of Hubble Space Telescope (HST) by providing guide stars for pointing and calibrated images for observation-planning, and, on the scientific side, to applying the same resources to selected programs in community service and astrophysics.作者: 敲竹杠 時(shí)間: 2025-3-29 05:46
Wesley T. Huntress Jr.,Mikhail Ya. Marovs a tradeoff between coarse sample intervals that, while economical, do not allow the faithful reproduction of the information in photographic material, and fine intervals, which can record all of the information, but at a prohibitive cost. We investigate these issues by conducting Fourier analyses 作者: majestic 時(shí)間: 2025-3-29 09:09
Wesley T. Huntress Jr.,Mikhail Ya. Marovn a few hours photographic plates up to 14″ × 14″ with a positional accuracy of 1μm (repeatability: 0.2μm) and a photometric accuracy of 2% over a dynamical range of 3 densities. The detector is a RETICON CCPD array with 1024 photodiodes. X and Y coordinates are measured with Heidenhain encoders. Au作者: 金絲雀 時(shí)間: 2025-3-29 14:47
Preface to the First and Second Edition81, PhD thesis). As the name of the measuring machine suggests, a major part of its functionality is to accurately measure photographic densities. Although the old epoch Palomar Observatory Sky Survey (POSS) plates cannot be used for accurate photometry, many other plates, including the new epoch PO作者: HALL 時(shí)間: 2025-3-29 18:47 作者: 大雨 時(shí)間: 2025-3-29 21:21
Welcoming Address: Two Thousand Years of Optical Sky Surveys which form them. Aratus’ survey is based on one now lost, by Eudoxus, who visited Alexandria for the purpose of examining the records of observations kept in the library and for consultations with the community of scholars there — these observations were originally made about 2000 BC, perhaps from Minos in Crete.作者: myalgia 時(shí)間: 2025-3-30 02:59 作者: BIPED 時(shí)間: 2025-3-30 06:01
Digitised Sky Surveys at the Space Telescope Science Institute, to supporting the use of Hubble Space Telescope (HST) by providing guide stars for pointing and calibrated images for observation-planning, and, on the scientific side, to applying the same resources to selected programs in community service and astrophysics.作者: separate 時(shí)間: 2025-3-30 10:44 作者: 預(yù)測(cè) 時(shí)間: 2025-3-30 13:19 作者: 優(yōu)雅 時(shí)間: 2025-3-30 20:12
Procedures: Dogmatism and Verification,This paper discusses the application of CCD cameras for digitisation of astrometric plate material. Details of the astrometric plate measuring systems and their design principles at Hamburg Observatory are discussed. First results concerning performance and obtainable measurement accuracies are presented.作者: 容易做 時(shí)間: 2025-3-31 00:17 作者: ALT 時(shí)間: 2025-3-31 02:59
The Use of Eastman Kodak 4415 Film in the UK Schmidt TelescopeIn this paper we report experiments with 4415 film in the UK Schmidt telescope which may enable us to use a much wider range of sensitized materials than was previously possible, and to exploit the superior imaging properties of modern materials that are only available on film.作者: GUILT 時(shí)間: 2025-3-31 07:33
Hardware and Software Aspects of CCD Camera-Based Astrometric Plate MeasurementsThis paper discusses the application of CCD cameras for digitisation of astrometric plate material. Details of the astrometric plate measuring systems and their design principles at Hamburg Observatory are discussed. First results concerning performance and obtainable measurement accuracies are presented.
