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Taiwan Automated Telescope (TAT) at Maidanak
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Taiwan Automated Telescope Taiwan Automated Telescope (TAT) at Maidanak(TAT) at Maidanak
Taiwan Automated Telescope Taiwan Automated Telescope (TAT) at Maidanak(TAT) at Maidanak
Wang, Li-HanWang, Li-Han
National Tsing Hua University, TaiwanNational Tsing Hua University, Taiwan
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Outline• Taiwan Automated Telescope Network
• Issues from TAT Experience at Maidanak
• Suggestions
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Taiwan Automated Telescope Network
• It will consist of several fully-automated telescopes at appropriate longitudes around the world.
• Current sites Hsinchu, Taiwan (test site) Teide Observatory, Tenerife, Canary Is. ,Spain Maidanak Observatory, Uzbekistan• Future sites Mauna Loa Observatory, Hawaii Yunnan Observatory, China …….
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TAT at Teide, Spain
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TAT at Maidanak
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Instrumentation
• Fully automated system• 3.5 inch Telescope (Questar, Maksutov Type)• German Type Equatorial Mount (Takahashi NJP )• 1024 * 1024 CCD (Apogee U6)• No any filters• Linux-based Computer
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ObserverInternet
Linux-base Computer
CCD
Equatorial Mount
Electrical Box
Enclosure
Weather Station & GPS
WebCam
Procedure
control control controlcontrol
controlcontrol
control
eg1 eg2 eg3
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Outline• Taiwan Automated Telescope Network
• Issues from TAT Experience at Maidanak
• Suggestions
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Major Issues from TAT Experience at
Maidanak (2007.07 – 2010.06)
• Electric Power Stability• Internet
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TAT Power System
• Stabilizer• Transformer(22
0V→110V)• UPS
Total power consumption : < 2KW
c s
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Power Stability Problems
1. Voltage Fluctuation 2. Power interruption (frequent, long,
unexpected)
Result in1. More problems in electronic devices2. UPS battery depletion (shortens battery life time)3. Heater OFF → Low temperture → Battery Death
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Power Stability Problems
1. Voltage Fluctuation 2. Power interruption (frequently, long,
unexpected)
Result in1. More problems in electronic devices2. UPS battery depletion (shortens battery life time)3. Heater OFF → Low temperture → Battery Death
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Voltage Data from UPS (after stabilizer )
Date and TimeLine In (Max)
Line In (Min)
Line In (Average
)
Line Out(Average
)Freq
2010/06/13 22:15:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 22:25:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 22:35:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 22:45:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 22:55:24 108.00 84.20 108.00 123.80 50.00
2010/06/13 23:05:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 23:15:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 23:25:24 107.20 106.50 107.20 123.10 50.00
2010/06/13 23:35:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 23:45:24 108.00 106.50 107.20 123.10 50.00
2010/06/13 23:55:24 108.00 106.50 107.20 123.10 50.00
p
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Power Stability Problems
1. Voltage Fluctuation 2. Power interruption (frequently, long,
unexpected)
Result in1. More problems in electronic devices2. UPS battery depletion (shortens battery life time)3. Heater OFF → Low temperture → Battery Death
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Weather Data
• Indication of power interruption
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Power Stability Problems
1. Voltage Fluctuation 2. Power interruption (frequently, long,
unexpected)
Result in1. More problems in electronic devices2. UPS battery depletion (shortens battery life time)3. Heater OFF → Low temperature → Battery Death
![Page 18: Taiwan Automated Telescope (TAT) at Maidanak](https://reader035.fdocuments.in/reader035/viewer/2022062721/568135e4550346895d9d5871/html5/thumbnails/18.jpg)
Major Issues from TAT Experience at
Maidanak (2007.07 – 2010.06)
• Electric Power Stability• Internet
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Internet Current status• Remote control • TAT web page• Webcam image (single frame)• Incapable of image transfer
shell eg1 eg2 eg3speed eg1, eg2 ,eg3
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Suggestions
• Power 1. Monitoring power stability 2. Solving problems of power instability
• Internet 1. Capable of image transfer
Infrastructure needs to be improved.
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Thanks Thanks Thanks Thanks
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b
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b
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Voltage Data from UPS (after stabilizer )
80
90
100
110
120
2010/6/1221:00
2010/6/1303:00
2010/6/1309:00
2010/6/1315:00
2010/6/1321:00
2010/6/1403:00
2010/6/1409:00
2010/6/1415:00
2010/6/1421:00
2010/6/1503:00
Voltage Max
Min
b
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Fully-Automated Observation
• Check information on Web Page
b
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Fully-Automated Observation
• Control by internet
• Edit observation schedule by internet
b
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Fully-Automated Observation
• Control by internet
• Edit observation schedule by internet
b
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Internet Speed Test- Ping -
b
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Internet Speed Test- Transfer Image -
b
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Internet Speed Test- Transfer Image -
b