Download - EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

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Page 1: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

EU-HOUMW training session Limassol, Cyprus December 6-7, 2011

Cezar LEŞANUResearch AssistantAstronomical Observatory-Planetarium Compartment

University “Ştefan cel Mare” of Suceava, Romaniawww.usv.ro

EU-HOUMW Internet Educational Solar Radio Telescope

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Page 2: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.
Page 3: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Atmospheric opacity

www.wikipedia.com

Page 4: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Advantages of the radio astronomy

Radio observations are possible:• during the day• on full Moon• on bad weather (cloudy sky)• inside and behind dust and gas clouds

Page 5: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

1890 Thomas Alva Edison

wwwSource: www.nrao.edu

Page 6: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

1897 Sir Oliver J. Lodge

Source: www.nrao.edu

Page 7: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Wilsing şi Scheiner (1896)

Source: www.nrao.edu

Page 8: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Charles Nordman (1900)

Source: www.nrao.edu

Page 9: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

What is a radio telescope? http://radiosky.com/simple.html

Page 10: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Small total power radio telescopeusing on the shelf Satelite TV Ku-band equipment

Offset TV satellite dish

Power Supply

14-18V DCAnalog satellite finder

(modified)

LNB

Computer + data logging software

Data acquisition board

Page 11: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Detect microwaves emitted by the Sun and approximate the temperature at ~11GHz (chromosphere)

source: http://sun.kochi-ct.jp/e/observatory.html

Page 12: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Goal of the EU-HOU Internet Solar Radio Telescope

• Bring to the classroom via Internet the Solar radio astronomy (1-2 hours theoretical background, data acquisition, exercises)

• Easy access (user, password), automatic disconnection (10-30 min)

• Multiple user access in real time to the acquired data

• Easy hardware setup for host institutions - no PC server needed, no space/office needed, short cables (mains power, Internet LAN or WLAN)

• Robust enough for long term, intensive use in various weather conditions

Page 13: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Embedded server controllerBlock diagram

User interface

Az-El antenna rotator YAESU G5500

TVSat dish + Ku band LNB

Embedded server

Digitalcomands

AnalogpositionfeedbackRF signal

~1GHz

External IP camera

Internet

Page 14: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Exercises examples

• Where is the Sun? – Calculate the Sun AZ/EL for a given location, date and time (OR use a calculator e.g. http://www.jgiesen.de/SunView/index.htm) .

• Find Antenna Half Power Beam Width (parameter needed for the next exercise, Sun transit - 30 min data acquisition

OR use the HPBW given in the antenna data sheet).

• Measuring the Sun temperature at 11GHz(10min data acquisition, measure the ground and sky temperatures and calculate the Sun’s temperature).

Page 15: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

The Internet Solar Radio Observatory Imai Laboratory, Kochi National College of Technology, Japan

source: http://sun.kochi-ct.jp/e/observatory.html

Page 16: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

The Internet Solar Radio Observatory Imai Laboratory, Kochi National College of Technology, Japan

source: http://sun.kochi-ct.jp/e/observatory.html

Page 17: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Source unknown

Page 18: EU-HOUMW training session Limassol, Cyprus December 6-7, 2011 Cezar LEŞANU Research Assistant Astronomical Observatory-Planetarium Compartment University.

Thank you!