1. Status Report of Taiwan Two Meter Telescope Yi Chou Graduate Institute of Astronomy National Central University 2016/1/171 2011 兩岸天文儀器會議

2. 2M Telescope Project Project started in early 2006 Funding – Ministry of Education:5500 project Telescope : ~2.6M USD – National Science Council Instrument: ~1.3M USD – NCU Foundation Building, dome & Transportation : ~3.5M USD – Total: ~7.4 M USD 2016/1/172 2011 兩岸天文儀器會議

3. Telescope 2016/1/173 2011 兩岸天文儀器會議

4. 2M Telescope 1. Optical system ： Optical type ： Ritchey-Chretien Effective aperture ： 2000mm Focal ratio ： Primary F2.2, combined F8 Concentration ability ： 80 ％ of light energy in 0.4 arcsec Mirror Surface Accuracy: 1/15λ Available filed of view ： 1 degree Maximum Slew Rate: 4 deg/sec 2.Mechanical system ： Mount type ： Alt-Az mount Total weight ： 23 ton Height in total ： 8664mm Max. instrument load for Cassegrain focus ： 500kg Max. dimension of Csaaegrain instrument ： 2m x2m x2m 2016/1/174 2011 兩岸天文儀器會議

5. Telescope Manufacture Nishimura Opt. Ltd. won the contract and started to design and build the telescope in early 2007. 2016/1/175 2011 兩岸天文儀器會議

6. Telescope Manufacture Oct 2007Telescope design complete Jan 2009Manufacture of mirrors complete Mar 2009Mirrors ship to Japan Major parts of telescope complete Mar 2010Integration test complete Apr 2010Telescope shipped to Taiwan 2016/1/176 2011 兩岸天文儀器會議

7. Telescope Design (10/2007) 2016/1/177 2011 兩岸天文儀器會議

8. Primary Mirror Polishing (06/2008) 2016/1/178 2011 兩岸天文儀器會議

9. Primary Mirror (02/2009) 2016/1/179 2011 兩岸天文儀器會議

10. Parts of Telescope (02/2009) 2016/1/1710 2011 兩岸天文儀器會議

11. Taiwan Two Meter Telescope (03/2010) 2016/1/1711 2011 兩岸天文儀器會議

12. Integration Test (03/2010) 2016/1/1712 2011 兩岸天文儀器會議

13. 2016/1/1713 2011 兩岸天文儀器會議

14. 2M in Taiwan Now (in a Warehouse) 2016/1/1714 2011 兩岸天文儀器會議

15. Site and Building 2016/1/1715 2011 兩岸天文儀器會議

16. Lulin Observatory ~2,860 m Mt Jade ~4,000 m NCU Alisan 2016/1/1716 2011 兩岸天文儀器會議

17. Lulin Observatory LOT 1 meter teelscope TAOS-C NCKU ELF TaidaLELIS 40 cm Telescope TAOS-D TAOS-A/B  環保署 基地台 WeatherStation EPA Lab Future 2M Telescope 2016/1/1717 2011 兩岸天文儀器會議

18. Sketch Maps of 2M Telescope and Observatory Sketch Map of the 2m telescope and observatory Imaginary view of the 2m Observatory 2016/1/1718 2011 兩岸天文儀器會議

20. Difficulties We Met …… However, there is a new regulation in Taiwan that the mountain area above 1500 m was assigned as protected area and only limit buildings are allowed. Astronomical observatory was not included. Thank to assistant from Chairman Wang of Legislative Yuan to coordinate government ministries, astronomical observatory was finally put into the list in late 2007. The building permit was issued on 11/15/2008 from Chiyi county government. A local company won the contract for the building and was ready to start the construction in May 2009 …… 2016/1/1720 2011 兩岸天文儀器會議

21. Difficulties We Met …… In May 2009, Environment Protection Administration (EPA) informed us the construction must be suspended because the 2M building is located inside an animal protection area. – Environmental impact assessment must be done in advanced. – In this animal protection area, four season’s animal inspection is essential. – The building permit was invalid – The building contract had to be rescinded Environmental impact assessment was made from Oct 2009 to Nov 2010 and the report was approved by EPA in March 2011. The new budget was set and the construction will be started soon. 2016/1/1721 2011 兩岸天文儀器會議

22. Instrument 2016/1/1722 2011 兩岸天文儀器會議

23. Instrument The first generation instrument for 2M telescope is the Simultaneous Multi-color Imager. This 4-color simultaneous imager consists of – Dichroic mirrors and filters split the light into 4 bands: 552-689nm(r), 691-815nm(i), 815- 915nm(z) and 967-1024nm(y) – higher QE CCD cameras 3 sets of 1100-series cameras were purchased from Spectral Instruments Inc., USA, within E2V back illuminated deep depletion CCDs for r,i,z bands The other one (NCU-Cam1), with within fully depleted CCD from Hamamatsu photonics K.K., Japan. and Polycold cryo-cooler, is developed by NCU instrument team 2016/1/1723 2011 兩岸天文儀器會議

24. 4-color Simultaneous Imager 2016/1/1724 2011 兩岸天文儀器會議

25. 4-color Simultaneous Imager 2016/1/1725 2011 兩岸天文儀器會議

26. Instrument Lab at NCU To make the multi-color imager for 2M telescope, as well as for future instrument developments, NCU set up an instrument lab in early 2009. Key persons of NCU lab – Jason Wu: Electrical engineer – Duncun Chen: Project assistant – Azure Yang: Project assistant 2016/1/1726 2011 兩岸天文儀器會議

27. Instrument Development July-Sep 2010Three 1100-series cameras arrived July 2010A 1100-series camera tested with LOT Sep 2010Optical adopter design complete April 2011Optical adopter complete July 2011All four camera tested with LOT 2016/1/1727 2011 兩岸天文儀器會議

28. Three 1100-series Cameras Arrived 2016/1/1728 2011 兩岸天文儀器會議

29. A 1100-series Camera Tested with LOT 2016/1/1729 2011 兩岸天文儀器會議

30. LOT/SI1100 First light Image 2016/1/1730 2011 兩岸天文儀器會議

31. LOT/NCUcam-1 First Light Image 2016/1/17 2011 兩岸天文儀器會議 31

32. Optical Adopter Design Complete 2016/1/1732 2011 兩岸天文儀器會議

33. Optical Adopter 2016/1/17 2011 兩岸天文儀器會議 33

34. Summary The manufacture of telescope has been completed and the telescope has shipped to Taiwan in 2010. The environment impact assessment has been completed and the new budget has set. The construction will be started soon/ The 4 cameras, including the one we develop (NCUcam1), and the optical system for the 4-color simultaneous imager have been complete. The integration test cannot be done due to the delay of telescope dome construction. – We are now looking for suitable telescope that allows us to test instrument’s performance, or, furthermore, start scientific observations. 2016/1/1734 2011 兩岸天文儀器會議

35. Thank You 2016/1/1735 2011 兩岸天文儀器會議