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MTO 1000 The eclipse was photographed by the object-lens MTO 1000 of the Russian production that was lent by the Rokycany Astronomical Observatory (West Bohemian town). We took photos using the film Kodak Royal Gold 200 ASA. As a camera we used Petri MF-1 with a wire release shutter, lent by Karel Øezáè. The negatives were digitalized by the DTP studio in Vodickova street (centre of Prague) with the snap size 4535×3035 pixels.
During the total phase, which lasted 3 minutes and 20 seconds, we had taken 25 snaps. The exposure time varied from 1/1000 s to 1 s. We took the snaps from the shortest time to the longest and afterwards back. In the short times several protuberances can be seen while in longer exposure times the structure of the outer corona is visible. The snaps were elaborated by Corel Draw 9 and Adobe Photoshop 5 applications. Additionally we will develop special software for automatic elaboration of the exposed snaps and we hope even in better results.
Composition of several snaps Subsequent five-snap-sequence was used for additional radial mask elaboration. The snaps were composed into one image from rings via radial Gaussian blur filter. In the second step a mask was created as subtraction of the radially blurred composition and original composition. This mask was overlaied with the original composition. The process was time and memory consuming and on PII 350 MHz/256 MB took nearly two hours.
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