Table 1
Summary of observational data.
| Obs. | D (m) | CCD camera | Number of pixels | Binning | Pixel scale (′′/pxl) | Field of view | Exp. time (sec) | Filters | Nights |
|---|---|---|---|---|---|---|---|---|---|
| TNG (a) | 3.6 | E2V 4240 | 2048 × 2048 | 1 × 1 | 0.252 | 8.6 × 8.6 | 90 | R | 1 |
| CrAO (b) | 2.6 | FLI PL-4240 | 2048 × 2048 | 2 × 2 | 0.56 | 9.5 × 9.5 | 180 | R | 3 |
| INT (c) | 2.5 | x4 EEV | 2000 × 4000 | 1 × 1 | 0.33 | 11 × 22 | 60 | BVR | 2 |
| Terskol (d) | 2.0 | FLI PL-4301 | 2048 × 2048 | 1 × 1 | 0.31 | 10.7 × 10.7 | 180 | BVRI | 2 |
| OSN (e) | 1.5 | CCDT150 | 2000 × 2000 | 2 × 2 | 0.46 | 7.8 × 7.8 | 400, 600 | VR | 16 |
| CAO (f) | 1.2 | DLR-III | 4000 × 4000 | 1 × 1 | 0.314 | 21.5 × 21.5 | 300, 500 | VR | 8 |
| Simeiz (g) | 1.0 | FLI PL09000 | 3072 × 3072 | 3 × 3 | 0.56 | 9.5 × 9.5 | 240 | R, Clear | 8 |
| Tian Shan (h) | 1.0 | Apogee Alta F9000 | 3056 × 3056 | 1 × 1 | 0.74 | 18.9 × 18.9 | 300 | R, Clear | 4 |
| AbAO (i) | 0.7 | FLI IMG6303E | 3072 × 2048 | 1 × 1 | 0.87 | 44.3 × 29.5 | 180 | Clear | 6 |
| Chuguev (j) | 0.7 | ML47-10 | 1056 × 1027 | 1 × 1 | 0.95 | 16.8 × 16.3 | 240, 300 | R | 3 |
Notes. (a)Telescopio Nazionale Galileo, Roque de los Muchachos Observatory, Spain, (b)Crimean Astrophysical Observatory, Ukraine, (c)Isaac Newton Telescope, Roque de los Muchachos Observatory, Spain, (d)Ukrainian-Russian Terskol Observatory, Russian Federation, (e)Sierra Nevada Observatory, Spain, (f)Calar Alto Observatory, Spain, (g)Simeiz Observatory, Crimea, (h)Tien Shan Astronomical Observatory, Kazakhstan, (i)Abastumani Observatory, Georgia, (j)Chuguev Observatory, Ukraine.
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