UV imaging telescope for the Indian Multiwavelength Astronomy Satellite

1998 ◽  
Author(s):  
Ashok K. Pati ◽  
N. K. Rao
Keyword(s):  
Uv Imaging ◽  
Imaging Telescope

scholarly journals EUVITA - an extreme UV imaging telescope array with spectral capability

1993 ◽  
Vol 4 (2) ◽  
pp. 117-135 ◽  
Author(s):  
J. -L. Courvoisier ◽  
A. Orr ◽  
P. Bühler ◽  
A. Zehnder ◽  
R. Henneck ◽  
...  
Keyword(s):  
Telescope Array ◽  
Uv Imaging ◽  
Imaging Telescope ◽  
Extreme Uv

Extreme UV imaging telescope array on the spectrum X-G satellite

1990 ◽  
Author(s):  
Alex Zehnder ◽  
Joerg Bialkowski ◽  
P. Buehler ◽  
E. Morenzoni ◽  
Nick Schlumpf ◽  
...  
Keyword(s):  
Telescope Array ◽  
Uv Imaging ◽  
Imaging Telescope ◽  
Extreme Uv

scholarly journals Glazar-2: A Wide-Field Camera Aboard the MIR Space Station

1994 ◽  
Vol 161 ◽  
pp. 55-56
Author(s):  
H.M. Tovmassian ◽  
Y.M. Khodjayants ◽  
M.N. Krmoyan ◽  
R.V. Isadjanian ◽  
O.N. Gasparian ◽  
...  
Keyword(s):  
Space Station ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Wide Field ◽  
Late Type ◽  
Uv Imaging ◽  
Imaging Telescope ◽  
Stellar Associations

In 1987 the UV imaging telescope Glazar (Tovmassian et al. 1988) was launched to the Mir Space Station. Its sensitivity was lower than was expected. For this reason the UV survey of the sky was not done and only observations of OB stellar associations were made. The fields of about 15 stellar associations and of the Large Magellanic Cloud were observed. Only images of O, B or early A type stars were obtained on the Glazar photographs at 1640 å. The observations allowed the detection of an average ∼ 15 % new, unknown OB type stars in each of the observed fields, the discovery of hot unknown components of some late type stars and a detailed study of the distribution of stars in space. Some new, unknown OB stellar associations were discovered and more correct distances of stellar associations were determined. The distribution of the absorbing matter was also studied. New, B-type stellar associations, named B were discovered.

scholarly journals EUVITA — An extreme UV imaging telescope array with spectral capability

1993 ◽  
Vol 13 (12) ◽  
pp. 299-302
Author(s):  
T.J.-L. Courvoisier ◽  
A. Orr ◽  
P. Bühler ◽  
A. Zchnder ◽  
R. Henneck ◽  
...  
Keyword(s):  
Telescope Array ◽  
Uv Imaging ◽  
Imaging Telescope ◽  
Extreme Uv

scholarly journals Characterization and Identification of Varnishes on Copper Alloys by Means of UV Imaging and FTIR

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 298
Author(s):  
Miriam Truffa Giachet ◽  
Julie Schröter ◽  
Laura Brambilla
Keyword(s):  
Copper Alloys ◽  
Analytical Techniques ◽  
Experimental Methodology ◽  
Artificial Ageing ◽  
Non Invasive ◽  
Uv Imaging ◽  
Before And After ◽  
The Comparative Study ◽  
The 19Th Century ◽  
Analytical Tools

The application of varnishes on the surface of metal objects has been a very common practice since antiquity, both for protective and aesthetic purposes. One specific case concerns the use of tinted varnishes on copper alloys in order to mimic gilding. This practice, especially flourishing in the 19th century for scientific instruments, decorative objects, and liturgical items, results in large museum collections of varnished copper alloys that need to be preserved. One of the main challenges for conservators and restorers deals with the identification of the varnishes through non-invasive and affordable analytical techniques. We hereby present the experimental methodology developed in the framework of the LacCA and VERILOR projects at the Haute École ARC of Neuchâtel for the identification of gold varnishes on brass. After extensive documentary research and analytical campaigns on varnished museum objects, various historic shellac-based varnishes were created and applied by different methods on a range of brass substrates with different finishes. The samples were then characterized by UV imaging and infrared spectroscopy before and after artificial ageing. The comparative study of these two techniques was performed for different thicknesses of the same varnish and for different shellac grades in order to implement an identification methodology based on simple non-invasive examination and analytical tools, which are accessible to conservators.

scholarly journals Study of dynamical status of the globular cluster NGC 1851 using ultraviolet imaging telescope

2021 ◽  
Vol 42 (2) ◽  
Author(s):  
Gaurav Singh ◽  
R. K. S. Yadav ◽  
Snehalata Sahu ◽  
Annapurni Subramaniam
Keyword(s):  
Globular Cluster ◽  
Imaging Telescope

scholarly journals Study on the Influence Factors of Rod Plate Gap Corona Discharge Environment Based on UV Imaging

2020 ◽  
Vol 16 (1) ◽  
pp. 35-43
Author(s):  
Shenghui Wang ◽  
Wei Li ◽  
Tingyue Jiang ◽  
Leilei Niu ◽  
Fangcheng Lv ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Influence Factors ◽  
Uv Imaging

APD-based x-ray imaging telescope using Fresnel zone plates for extremely high spatial resolution

2005 ◽  
Author(s):  
Michael R. Squillante ◽  
Richard A. Myers ◽  
Mitchell Woodring ◽  
James F. Christian ◽  
Frank Robertson ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Fresnel Zone ◽  
Fresnel Zone Plates ◽  
X Ray ◽  
Zone Plates ◽  
X Ray Imaging ◽  
Imaging Telescope
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