Total solar eclipse

11th August 1999

figure 1

Figure 1 The three lines are from right to left: H-alpha (6562.8), Fe-X (6374) and He-I (5875.6).

The equipment used was:
Telescope: Schmidt Cassegrain F/6.3, diam: 250 mm. Spectrograph (FIASCO): Optical fibre: 135 um core diameter. Collimator: F=300 mm, F/6. Photo Lens F = 80 mm F/2. Grating: 1300 grooves/mm, blazed  at 500 nm. CCD: Sbig ST8E. Resolution: ~ 0.5 nm. Exposure time: 2 s.
 
Figure 2. Spectrum of the solar corona showing H-alpha, He-I and H-beta. Equipment: Telescope: Schmidt Cassegrain F/6.3, diam: 250 mm FIASCO Spectrograph: Fibre: 135 um core diameter F=300 mm collimator, F = 100 mm camera Grating: 600 gr/mm blazed @500 nm, CCD Hale-512II, Resolution: ~ 3.5 nm. Exposure time: 2 s
Layout of the telescope-spectrographs configuration for the Total Solar Eclipse 11th August 1999. 13 fibres were used in total. Figure 1 was taken with the high resolution spectrograph (Resolution 0.5nm,  Range 530-670nm), while figure 2 was taken with a low resolution spectrograph (Resolution 3.5 nm, Range 480-680nm).
Spectrum of the Sun the 11th August 1999, minutes after the total eclipse. It was taken with the high resolution spectrograph in the wavelength range 530-670 nm
For comparation with the real sun spectra above, this is a synthetic spectra generated with programs SPECTRUM (Peter O.Gray) and SMOOTH for Linux. 

 

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