The Coude Echelle Spectrograph for the Lijiang 1.8m telescope
| Autor: | Hao Xian, Hang-Xin Ji, Liang Chang, Zhen Tang, Jujia Zhang, Chuanjun Wang, Jirong Mao, Hong-Bin Li, Kai Wei, Xi-Qi Li, Bao-Li Lun, He Shousheng, Xiao-Li Wang, Huijuan Wang, Lei Wang, Yu-Xin Xin, Xiao-Jun Jiang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
010308 nuclear & particles physics business.industry Instrumentation media_common.quotation_subject Resolution (electron density) Astronomy and Astrophysics Astrophysics 01 natural sciences law.invention Telescope Wavelength Optics Space and Planetary Science law Limiting magnitude Sky 0103 physical sciences Spectral resolution business 010303 astronomy & astrophysics Spectrograph media_common |
| Zdroj: | Research in Astronomy and Astrophysics. 20:032 |
| ISSN: | 1674-4527 |
| Popis: | The Coude Echelle Spectrograph (CES) was originally mounted on Xinglong 2.16 m telescope in 1994. When the High Resolution Fiber-fed Spectrograph (HRS) was commissioned at Xinglong 2.16 m telescope, the red path of CES was moved to Lijiang 1.8 m telescope, following some redesign and reinstallation. The CES of Lijiang 1.8 m telescope has the spectral resolution (R = λ/Δλ) ranging from 20000 to 50000 corresponding to different slit widths. With a 2k × 2k PI CCD, CES has a wavelength coverage between 570 nm to 1030 nm. In particular, the resolution of 37000 at 0.5 mm slit corresponds to 1.3″ on the sky. The limiting magnitude is V = 11.5 with the use of the tip-tilt feedback system, and the S/N is about 40 for 1 hour exposure at 600 nm (R = 37000). During the installation of CES, the tip-tilt mirror technology had successfully fulfilled high precision guiding and tracking for high resolution spectral observation and significantly improved the observation efficiency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|