The FIRST project: a single-mode fiber-based very high-dynamic range diffraction-limited imaging instrument at visible to near-infrared wavelengths

2008 ◽  
Author(s):  
Takayuki Kotani ◽  
Guy Perrin ◽  
Sylvestre Lacour ◽  
Eric Thiébaut ◽  
Julien Woillez ◽  
...  
Keyword(s):  
Near Infrared ◽  
Dynamic Range ◽  
Single Mode ◽  
High Dynamic Range ◽  
Single Mode Fiber ◽  
Infrared Wavelengths ◽  
High Dynamic ◽  
Imaging Instrument ◽  
Very High

scholarly journals Thermal Imaging Metrology Using High Dynamic Range Near-Infrared Photovoltaic-Mode Camera

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6151
Author(s):  
Thomas B. O. Rockett ◽  
Nicholas A. Boone ◽  
Robert D. Richards ◽  
Jon R. Willmott
Keyword(s):  
Measurement Uncertainty ◽  
Wide Temperature Range ◽  
Thermal Imaging ◽  
Near Infrared ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
Thermal Camera ◽  
Temperature Range ◽  
Photovoltaic Mode ◽  
High Dynamic

The measurement of a wide temperature range in a scene requires hardware capable of high dynamic range imaging. We describe a novel near-infrared thermal imaging system operating at a wavelength of 940 nm based on a commercial photovoltaic mode high dynamic range camera and analyse its measurement uncertainty. The system is capable of measuring over an unprecedently wide temperature range; however, this comes at the cost of a reduced temperature resolution and increased uncertainty compared to a conventional CMOS camera operating in photodetective mode. Despite this, the photovoltaic mode thermal camera has an acceptable level of uncertainty for most thermal imaging applications with an NETD of 4–12 °C and a combined measurement uncertainty of approximately 1% K if a low pixel clock is used. We discuss the various sources of uncertainty and how they might be minimised to further improve the performance of the thermal camera. The thermal camera is a good choice for imaging low frame rate applications that have a wide inter-scene temperature range.

scholarly journals State-of-the-art VLBI imaging: 3C345

1991 ◽  
Vol 131 ◽  
pp. 354-357
Author(s):  
Ann E. Wehrle ◽  
Stephen C. Unwin
Keyword(s):  
Thermal Noise ◽  
Dynamic Range ◽  
State Of The Art ◽  
High Dynamic Range ◽  
Instrumental Effects ◽  
High Dynamic ◽  
Low Dynamic Range ◽  
Very High

AbstractMost VLBI images have low dynamic range because they are limited by instrumental effects such as calibration errors and poor u, v-coverage. We outline the method used to make a new image of the bright quasar 3C345 which has very high dynamic range (peak-to-noise of 5000:1) and which is limited by the thermal noise, not instrumental errors. Both the Caltech VLBI package and the NRAO AIPS package were required to manipulate the data.

Microstrip X-ray detector with a very high dynamic range based on LPE-GaAs

1998 ◽  
Vol 45 (3) ◽  
pp. 724-727 ◽  
Author(s):  
A. Kaluza ◽  
T. Ohms ◽  
C. Rente ◽  
R. Engels ◽  
R. Reinartz ◽  
...  
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
X Ray ◽  
High Dynamic ◽  
Very High

scholarly journals Development of a high-dynamic range imaging instrument for a single telescope by a pupil remapping system

2010 ◽  
Author(s):  
Takayuki Kotani ◽  
Sylvestre Lacour ◽  
Elodie Choquet ◽  
Elsa Huby ◽  
Guy S. Perrin ◽  
...  
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
High Dynamic Range Imaging ◽  
Range Imaging ◽  
High Dynamic ◽  
Imaging Instrument

Micro strip X-ray detector with a very high dynamic range based on LPE-GaAs

2002 ◽  
Author(s):  
A. Kaluza ◽  
T. Ohms ◽  
C. Rente ◽  
R. Engels ◽  
R. Reinartz ◽  
...  
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
X Ray ◽  
High Dynamic ◽  
Very High
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