scholarly journals Near-Infrared Camera and Multi-Object Spectrometer Observations of the Hubble Deep Field: Observations, Data Reduction, and Galaxy Photometry

1999 ◽  
Vol 117 (1) ◽  
pp. 17-39 ◽  
Author(s):  
Rodger I. Thompson ◽  
Lisa J. Storrie-Lombardi ◽  
Ray J. Weymann ◽  
Marcia J. Rieke ◽  
Glenn Schneider ◽  
...  
Keyword(s):  
Data Reduction ◽  
Near Infrared ◽  
Infrared Camera ◽  
Field Observations ◽  
Hubble Deep Field

scholarly journals The Near-Infrared Camera and Multi-Object Spectrometer Ultra Deep Field: Observations, Data Reduction, and Galaxy Photometry

2005 ◽  
Vol 130 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Rodger I. Thompson ◽  
Garth Illingworth ◽  
Rychard Bouwens ◽  
Mark Dickinson ◽  
Daniel Eisenstein ◽  
...  
Keyword(s):  
Data Reduction ◽  
Near Infrared ◽  
Infrared Camera ◽  
Field Observations

scholarly journals The Hubble Deep Field: Observations, Data Reduction, and Galaxy Photometry

1996 ◽  
Vol 112 ◽  
pp. 1335 ◽  
Author(s):  
Robert E. Williams ◽  
Brett Blacker ◽  
Mark Dickinson ◽  
W. Van Dyke Dixon ◽  
Henry C. Ferguson ◽  
...  
Keyword(s):  
Data Reduction ◽  
Field Observations ◽  
Hubble Deep Field

scholarly journals Search for giant planets around seven white dwarfs in the Hyades cluster with the Hubble Space Telescope

2020 ◽  
Vol 500 (3) ◽  
pp. 3920-3925
Author(s):  
Wolfgang Brandner ◽  
Hans Zinnecker ◽  
Taisiya Kopytova
Keyword(s):  
White Dwarfs ◽  
Near Infrared ◽  
Hubble Space Telescope ◽  
Infrared Camera ◽  
Detection Limits ◽  
Giant Planets ◽  
High Angular Resolution ◽  
Mass Detection ◽  
Space Telescope ◽  
Hyades Cluster

ABSTRACT Only a small number of exoplanets have been identified in stellar cluster environments. We initiated a high angular resolution direct imaging search using the Hubble Space Telescope (HST) and its Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) instrument for self-luminous giant planets in orbit around seven white dwarfs in the 625 Myr old nearby (≈45 pc) Hyades cluster. The observations were obtained with Near-Infrared Camera 1 (NIC1) in the F110W and F160W filters, and encompass two HST roll angles to facilitate angular differential imaging. The difference images were searched for companion candidates, and radially averaged contrast curves were computed. Though we achieve the lowest mass detection limits yet for angular separations ≥0.5 arcsec, no planetary mass companion to any of the seven white dwarfs, whose initial main-sequence masses were >2.8 M⊙, was found. Comparison with evolutionary models yields detection limits of ≈5–7 Jupiter masses (MJup) according to one model, and between 9 and ≈12 MJup according to another model, at physical separations corresponding to initial semimajor axis of ≥5–8 au (i.e. before the mass-loss events associated with the red and asymptotic giant branch phase of the host star). The study provides further evidence that initially dense cluster environments, which included O- and B-type stars, might not be highly conducive to the formation of massive circumstellar discs, and their transformation into giant planets (with m ≥ 6 MJup and a ≥6 au). This is in agreement with radial velocity surveys for exoplanets around G- and K-type giants, which did not find any planets around stars more massive than ≈3 M⊙.

scholarly journals PANIC: a near-infrared camera for the Magellan telescopes

2004 ◽  
Author(s):  
Paul Martini ◽  
S. E. Persson ◽  
David C. Murphy ◽  
Christoph Birk ◽  
Stephen A. Shectman ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Camera

Real time injecting device with automated robust vein detection using near infrared camera and live video

2017 ◽  
Author(s):  
Tamim Ahmed ◽  
Khandker Sadia Rahman ◽  
Sk Subrina Shawlin ◽  
Mohammad Hasan ◽  
Arnab Bhattacharjee ◽  
...  
Keyword(s):  
Real Time ◽  
Near Infrared ◽  
Infrared Camera ◽  
Live Video

469 ASSESSMENT OF PERFUSION OF GASTRIC CONDUIT AND PROXIMAL ESOPHAGEAL STUMP BY INDOCYANINE GREEN FLUORESCENCE IMAGING IN PATIENTS UNDERGOING ESOPHAGECTOMY

2021 ◽  
Vol 34 (Supplement_1) ◽  
Author(s):  
Subramanyeshwar Rao Thammineedi
Keyword(s):  
Indocyanine Green ◽  
Fluorescence Imaging ◽  
Visual Inspection ◽  
Near Infrared ◽  
Infrared Camera ◽  
Visual Assessment ◽  
Transhiatal Esophagectomy ◽  
Gastric Conduit ◽  
Indocyanine Green Fluorescence ◽  
Laparoscopic Assisted

Abstract   Post esophagectomy anastomotic leakage and stricture are crucial factors in determining morbidity and mortality. Good vascularity of the gastric conduit is essential to avoid this complications. This prospective study assesses the utility of intraoperative indocyanine green (ICG) fluorescence imaging to determine gastric conduit vascularity in patients undergoing esophagectomy. Methods Thirteen consecutive patients who were undergoing esophagectomy for carcinoma middle, lower third esophagus or gastro-esophageal junction from August 2019 to September 2019, were included. Three patients underwent laparoscopic-assisted transhiatal esophagectomy, ten thoraco-laparoscopic assisted esophagectomy. Reconstruction was done by gastric pull up via posterior mediastinal route. Vascularity of gastric conduit was assessed by the near-infrared camera using ICG. Results On visual assessment of perfusion at the tip of gastric conduit, it was dusky in 11 patients, pink in two. Fuorescence imaging showed inadequate perfusion at the tip of conduit in 12 patients, needing revision. In one patient visual inspection showed adequate perfusion, but ICG disclosed poor vascularity requiring revision of the conduit’s tip. Resection of the devitalized portion of the proximal esophageal stump was needed in 5 patients both by visual and ICG assessment. The median time to appearance of blush from the time of injection of dye was 15 seconds (10 to 23 seconds). Conclusion Visual inspection of the gastric conduit vascularity can underestimate perfusion and hence can compromise resection of the devitalized part. ICG fluorescence imaging is more objective and promising means to ascertain the vascularity of gastric conduit during an esophagectomy. It could complement the visual inspection to decide the site of anastomosis.

scholarly journals An Infrared Camera Based on a Large PtSi Array

1995 ◽  
Vol 167 ◽  
pp. 109-116
Author(s):  
I. S. Glass ◽  
K. Sekiguchi ◽  
Y. Nakada
Keyword(s):  
Data Reduction ◽  
Infrared Camera ◽  
Large Format

A large-format PtSi array (effectively 1k × 0.5k pixels) has been incorporated into an infrared camera intended for survey work using the 0.75-m telescope at Sutherland. The array is very uniform and almost free of cosmetic defects. The camera, its electronics and the operational procedures that we use are described, together with the methods of data reduction. The limiting magnitudes that can be observed in the JHK broad bands are given.

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