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The Modernization of the Pulkovo Photographic (Photoelectric) Vertical Circle by a CCD Array

  • G. A. Goncharov (a1), B. K. Bagildinsky (a1), E. V. Kornilov (a1), D. D. Polojentsev (a1), K. V. Rumyantsev (a1) and V. D. Shkutov (a1)...

Extract

The Zverev photographic vertical circle (PVC) of the Pulkovo observatory is in the process of modernization. The features of the vertical circle are:

  1. a)Maksutov mirror-lens optical system with small aberrations and wide passband: aperture: 20 cm, focal length: 200 cm, focal scale: 103 arcsec/mm.
  2. b)Very compact instrument: 140 cm total length, 60 cm — tube.
  3. c)Wide field: 25 × 25 mm = 40′ × 40′. Wide-field imaging can be combined with meridian observations.
  4. d)Easily-reversible instrument: reversing takes less than 30 seconds.
  5. e)Two divided vertical circles of glass. Photoelectric circle reading microscopes.
  6. f)Photographic micrometer in focal plane. This will be changed with a CCD micrometer.

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Copyright

References

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Hoeg, E. 1995 in IAU Symposium No. 166, Astronomical and Astrophysical Objectives, Kluewer Academic Pub., in press.
Goncharov, G. 1995 in IAU Symposium No. 166, Astronomical and Astrophysical Objectives of Sub-Millisecond Optical Astrometry, Kluwer Academic Pub., Dordrecht, in press.

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