1 / 17

The Miyun 50m radio telescope and possible upgrading project

The Miyun 50m radio telescope and possible upgrading project. Jin Chengjin & Zhang Juyong Miyun Radio Astronomy Group, NAOC 2003, 11, 03. Contents:.  Brief history of the Miyun 50m project  The current status  The possible upgrading plan. Brief history:.

bary
Download Presentation

The Miyun 50m radio telescope and possible upgrading project

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Miyun 50m radio telescope and possible upgrading project Jin Chengjin & Zhang Juyong Miyun Radio Astronomy Group, NAOC 2003, 11, 03

  2. Contents:  Brief history of the Miyun 50m project  The current status  The possible upgrading plan

  3. Brief history: • The Miyun Station was founded in 1960s. • The MSRT and the Miyun 15m telescope

  4. Scientific motives for building a new 50m radio telescope: • Long-time monitoring of pulsars • Gravitational wave detection • IPS observations • A VLBI unit

  5. The conceptual design in the beginning (~2001,11): • L-band telescope • Metal mesh • Light weight

  6. Some improvement afterwards (~2002,3): Chinese Lunar project • S/X band • Metal plate + mesh • Much stronger

  7. The status: • The contract was signed in Oct, 2002. • The technical design has been finished. • In parallel, we have organized several technical reviews for the antenna design. • The prospection was completed. • The antenna is schedueled to be completed in the first half of 2005.

  8. The technical review meetings: • Reviewed by domestic experts (2002, 4) • Reviewed by experts from Germany, the UK and Australia (2002, 6) • Reviewed by structure engineer from NRAO (2003,2) Constructive comments & suggestions

  9. The 15-m Radio Telescope This telescope was built in 1992.  The first pulsar observation was performed with this 15-m telescope.

  10. The prospecting apparatus(2003, 7):

  11. 50m Telescope Design Specifications: Dish diameter ： 50 m Mounting ： Altitude-Azimuth Surface ： metal plate + metal mesh Metal plate : inner 30m Wire mesh : outer part RMS surface accuracy： 1.0mm (inner 30m) 3mm (outer part) Short wavelength limit ： 2.0cm(15 GHz) (inner 30m) Pointing accuracy： 19 arcsec Slew rates (elevation) ： 0.5 degree per second Slew rates (azimuth) ： 1.0 degree per second Optics ： Prime focus f/D = 0.35

  12. Possible upgrading plan: • The reflecting surface • The pointing accuracy • The optics Goal: up to 43GHz

  13. The reflecting surface • Active surface

  14. The pointing accuracy: • Pointing model & A new servo system

  15. The optics: • Secondary focus • Enough space and weight load

  16. The upgrading plan: • A doctor student is working on this project.

  17. Thanks!

More Related