Tests of 4 Single-Stage Image Intensifier Tubes for Solar Spectroscopy
Abstract
Atmospheric image degradation can be reduced by shortening the exposure time. Therefore, four single-stage electrostatically focused image intensifier tubes with fiber optic output were tested in the laboratory for their suitability in solar spectroscopy. Under the premise that the spatial and spectral image scales (Capri: 5.9″ mm−1 and 9 mm Å−1, resp.) should not be changed by a premagnification, the RCA tube 8605/V1 in combination with Copex Pan Rapid film turns out as the best choice. It yields a resolution of 55 line-pairs mm−1 and a gain of exposure time by a factor of ≈ 14 over Kodak IV-E in the red, with only little increase of photometric noise but appreciable pin-cushion distortion.
- Publication:
-
Solar Physics
- Pub Date:
- October 1974
- DOI:
- 10.1007/BF00155085
- Bibcode:
- 1974SoPh...38..517B
- Keywords:
-
- Electronic Equipment Tests;
- Image Intensifiers;
- Performance Tests;
- Solar Spectrometers;
- Fiber Optics;
- Image Enhancement;
- Image Motion Compensation;
- Signal To Noise Ratios;
- Solar Instruments;
- Solar Physics;
- Spectroscopy;
- Exposure Time;
- Good Choice;
- Spectral Image;
- Image Scale