| Image | Se1990ch_cor1.jpg |
| Date | 22. 07. 1990 |
| Time | Second contact 03:03:06 UT, third contact 03:04:50 UT
Eclipse duration 104 s |
| Place | Russia, Chukotka, Markovo village near Anadyr river |
| Coordinate | E 170° 30' , N 64° 43' |
| Conditions | Good - altitude of the Sun 41° above the horizon |
| Optics | Merz 160 mm stopped down to 90 mm, focal length 1785 mm |
| Film | Fortepan 400 |
| Exposure | 1/125 s - 2 s |
| Processing | Sum of 7 images enhanced by means of adaptive kernel convolution. The original images are B&W, the color is added by image processing.
Image processing by Miloslav Druckmüller |
| Scanner | Nikon LS 8000 (4000dpi resolution, 16 bit/pixel) |
| Software | Sofo ACC 6.0 Scientific Image Analyzer with Match II Module (final processing)
Corona 3.0 (coronal structure enhancement)
PhaseCorr 2.0 (rotation estimation - registration of images) |
| Note | The graph above the table shows the average values of the relative number of sunspots in which the red arrow indicates the time of 1990 eclipse. Graph was created according to data from Sunspot Index Data Center, Brussels. |
| Orientation | This image has the standard orientation i.e. North on the top end East on the left |
| Copyright | © 1990 Úpice Observatory, © 2004 Miloslav Druckmüller |
