Recent and Future Development of the Nobeyama 45-m Telescope - - PowerPoint PPT Presentation

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Recent and Future Development of the Nobeyama 45-m Telescope - - PowerPoint PPT Presentation

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Recent and Future Development of the Nobeyama 45-m Telescope Tetsuhiro MINAMIDANI (Nobeyama Radio Observatory) Outline Recent Issues & Actions Current System of Nobeyama 45-m Telescope On-going activities Future Development

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SLIDE 1

Recent and Future Development of the Nobeyama 45-m Telescope

Tetsuhiro MINAMIDANI (Nobeyama Radio Observatory)

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SLIDE 2

Outline

  • Recent Issues & Actions
  • Current System of Nobeyama 45-m Telescope
  • On-going activities
  • Future Development

– Community-Driven / Test for future development – NRO Driven

  • Summary
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 2

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SLIDE 3

Outline

  • Recent Issues & Actions
  • Current System of Nobeyama 45-m Telescope
  • On-going activities
  • Future Development

– Community-Driven / Test for future development – NRO Driven

  • Summary
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 3

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Issues of the Last Season (1/2)

  • Sub-ref. Z2 Driving System

– Season2017-2018

  • Frequently stuck in the early phase (= commissioning phase)
  • Recovered by warming up the cylinder tentatively.
  • Monitor and alert features were implemented.
  • No serious troubles during the Open-Use Observations

– FY2018

  • Recovered with MELCO

– Season 2018-2019

  • No troubles until now
  • Regular check and preventive maintenance works (grease-up

etc.) is scheduled every two months.

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 4

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SLIDE 5

Issues of the Last Season (2/2)

  • FOREST Receiver

– Season 2017-2018

  • Dewar temperature was raised and unstable from April…

– FY2018

  • Added additional compressor.
  • Two compressors are used for the FOREST receiver.

– Season 2018-2019

  • Quite stable temperature.
  • Planned warm-up and cooling-down is scheduled in the end
  • f March
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 5

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Recent Issues & Actions (FY2014 -)

  • Antenna

– Replacing sub-ref. servo system (FY2015 done) – Surface adjustment (FY2015 done)

  • Optics

– Put (Stick) metal foils to M2 and M3 (FY2015 done) – Replace chopper wheel mechanism (FY2016 done) – Replace beam switching mechanism (FY2017-2018) – Replace mirror switching controller (FY2017-2018) : Done in FY2018

  • Receiver – IF - Backend

– So many frontends è Decommissioning of S40, S80, S100, TZ – Commissioning of Z45 (Season2015-2016) è Open to Community Season 2016-2017 – Decommissioning of Old IF system

  • Relocate Continuum Backend (FY2015 - 2016)

– Commissioning of SAM45 spectral window mode (Season2015-2016) è Open to Community Season 2016-2017

  • Monitor & Control

– Expand remote observation: Hokkaido, Nagoya, Kagoshima, ASIAA, KASI – Metrology system (Wind / Thermal)

  • Observing/Reduction/Analysis Softwares

– New programs for generating observing script (nobs): updating – Toward CASA

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

Blue: Done Green: Done (updated) Red: on-going

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SLIDE 7

Replace mirror switching controller

  • Switching: x3 faster
  • User interface is updated.

– Switching buttons (GUI) are also available on COSMOS machine.

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 7

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SLIDE 8

New programs for generating

  • bserving script (nobs): updating
  • Line
  • Continuum
  • zobs and obs

– NOT updated. – will be obsoleted.

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

https://www.nro.nao.ac.jp/~nro45mrt/html/obs/nobs/index.html

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Other Activities toward Simple and Stable Operation

  • Reducing the number of synthesizers for 1st LO

– One synthesizer is shared with H40 and Z45 receivers.

  • FOREST

– CLNA Bias circuit was replaced for monitoring and controlling. – Some monitors were added.

  • Distribution of 10 MHz reference signal in the

receiver cabin was updated.

  • Replacement of Computers

– # of servers for COSMOS (Control System): 10 à 1 !!

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 9

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Outline

  • Recent Issues & Actions
  • Current System of Nobeyama 45-m Telescope
  • On-going activities
  • Future Development

– Community-Driven / Test for future development – NRO Driven

  • Summary
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 10

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SLIDE 11

Nobeyama 45-m Telescope

  • Diameter: 45m
  • Surface accuracy: 100um

rms

  • 5 Receivers
  • Frequency coverage: 20 –

116GHz

  • Beam size: 15” @ 115GHz
  • Pointing accuracy: ~ 3”
  • Main beam efficiency: ~ 0.45

@ 115GHz

  • Aperture efficiency: ~ 0.36

@ 115GHz

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

Nobeyama Radio Observatory (NRO) https://www.nro.nao.ac.jp/~nro45mrt/html/index-e.html

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2018-2019 System

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

Antenna Optics

H22 H40 Z45 T70 FOREST Old IF New IF Continuum BE SAM45 VLBI BE

Receiver IF chain Backend

45m Switch OPEN USE Internal Use Commissioning New VLBI BE PolariH (HINOTORI project)

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Receivers

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

H22 OPEN USE H40 OPEN USE Z45 OPEN USE T70 OPEN USE FOREST OPEN USE

# of Beams

1 1 1 1 4

Polarizatio n

RHCP/LHCP LHCP H/V H/V H/V

Rx.type

HEMT HEMT HEMT SIS (2SB) SIS (2SB)

RF freq.[GHz]

20-25 42-44 42-46 71 - 92 80 - 116

IF B.W[GHz]

5-7 2 5-7 2 4-8 4 4-8 4 4-12 8

Tsys[K]

100 250 100 120 - 270 150 - 300

IF chain

Old/New Old/New Old/new New Old/New

Continuu m BE

OPEN USE Internal OPEN USE Internal OPEN USE

VLBI BE

  • x

x

(2018B- ) H22 and H40 can be used simultaneously with a perforated filter.

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Backend (Single dish)

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

OCTAD-A + SAM45

OPEN USE

  • Cont. BE

OPEN USE

Type F-FX type correlator Detector AD IF chain New Old # of Array 16 2 (6) # of ch / array 4096

  • Freq.

Coverage (BW) (MHz) 2000 (1600 eff) / 1000 / 500 / 250 / 125 / 63 / 31 / 16 2000 Freq. Resolution (kHz) ~ BW / 4096 x 2

  • Channel

separation (kHz) BW / 4096

  • 14
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Outline

  • Recent Issues & Actions
  • Current System of Nobeyama 45-m Telescope
  • On-going activities
  • Future Development

– Community-Driven / Test for future development – NRO Driven

  • Summary
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 15

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SLIDE 16

On-going Activities

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

  • Replace beam switching mechanism

– Design phase (with simple test)

  • Decommissioning of Old IF system: Relocate Continuum Backend

– Implementation will be done in FY2019

  • Metrology system (Wind / Thermal)

– Study phase

  • Measurements of level differences among the main-dish panels
  • K-GPU spectrometer
  • Auto-pointing

– API for online data loading is preparing – Design and tests of the Auto-pointing algorithm is on-going. – Telescope test for low-frequency observation is planned in the Season 2018-2019.

  • Queue observations

– COSMOS was updated (JSON-based web API; ~2017) – Python-based queue system is under development (will be tested in the Season 2018- 2019).

  • Data reduction with CASA

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First Spectra with 45-m Telescope (Dec. 25, 2017)

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

K-GPU Spectrometer SAM45

SiO (v=2, J=1-0) @ 42.8GHz SiO (v=1, J=1-0) @ 43.1GHz

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On-going Activities

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

  • Replace beam switching mechanism

– Design phase (with simple test)

  • Decommissioning of Old IF system: Relocate Continuum Backend

– Implementation will be done in FY2019

  • Metrology system (Wind / Thermal)

– Study phase

  • Measurements of level differences among the main-dish panels
  • K-GPU spectrometer
  • Auto-pointing

– API for online data loading is preparing – Design and tests of the Auto-pointing algorithm is on-going. – Telescope test for low-frequency observation is planned in the Season 2018-2019.

  • Queue observations

– COSMOS was updated (JSON-based web API; ~2017) – Python-based queue system is under development (will be tested in the Season 2018- 2019).

  • Data reduction with CASA

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Data Reduction with CASA

  • Current Status:

– Support MS2 format (OTF & PSW) – End-to-end basic data reduction is confirmed.

  • chopper-wheel calibration, baseline subtraction, intensity scaling, imaging

– Pipeline system based on the ALMA-SD pipeline

  • Succeeded in generating OTF images (but, it takes much time... need to be shortened)
  • Update of Weblog is in progress
  • Plan:

– FY2018

  • Complete the pipeline

(with basic functions)

– FY2019

  • Debug with observed data

– FY2020

  • Release
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 19

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Outline

  • Recent Issues & Actions
  • Current System of Nobeyama 45-m Telescope
  • On-going activities
  • Future Development

– Community-Driven / Test for future development – NRO Driven

  • Summary
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 20

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Future Development

  • Does 45-m telescope have enough capability ?

– Highly depend on the demands from community. – Competitive ?

èAchieve the highest capability (in a few(?) particular fields)

  • Community-Driven / Test for future development

– Development proposal

  • NRO driven

– Multi-beam 67—116GHz Heterodyne Receiver

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 21

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Development Proposal

  • HINOTORI (P-28)

– PI: Hiroshi Imai (Kagoshima Univ.) – Hybrid Installation Project in Nobeyama, Triple-band Oriented – Simultaneous observing system 23/43/86 GHz – New VLBI Backend

  • FMLO

– PI: Akio Taniguchi (Nagoya University) – Commissioning of a New Off-point-less Observing Method for Radio Spectroscopy with a Frequency-Modulation Local Oscillator onto the FOREST

  • ASIAA 30-50GHz Rx

– Co-Pis: Chau-Ching Chiong (ASIAA), Fumitaka Nakamura (NAOJ) – Ultra Wide Bandwidth 7mm Receiver (30-50 GHz) for 45m Telescope

  • MKIDs camera (P-31, 35)

– PI: Naomasa Nakai (Kwansei Gakuin University) – 100 GHz band, 109 pixels

  • MAO

– PI: Yoichi Tamura (Nagoya Univ.) – Millimetric Adaptive Optics: Development of a Wave-front Sensor

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

https://www.nro.nao.ac.jp/~nro45mrt/html/misc/prop_instrument.html

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Multi-beam 67—116GHz Heterodyne Receiver

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

Provided from K. Kimura (Nagoya Univ.)

  • Design study is on-going.

– 9 (or 8) beams – Dual linear polarization – 67 – 116 GHz CLNAs – IF = 4 - 12 GHz – 2SB configuration

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  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope

Provided from K. Kimura (Nagoya Univ.)

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SLIDE 25

Outline

  • Recent Issues & Actions
  • Current System of Nobeyama 45-m Telescope
  • On-going activities
  • Future Development

– Community-Driven / Test for future development – NRO Driven

  • Summary
  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 25

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Summary

  • Nobeyama 45-m Telescope: One of the largest

radio telescope which covering 20 – 115GHz.

  • Major on-going/planned updates since FY2014

will be finished in FY2019.

  • Future Developments

– Achieve the highest capability (in a few(?) particular fields) – Development Proposal (5 programs) – Multi-beam 67—116GHz Heterodyne Receiver – Cooperation with universities and/or other projects in NAOJ is essential.

  • Dec. 26-27, 2018 | TM |

ALMA/45m/ASTE Users Meeting 2018 Recent and Future Development of the Nobeyama 45-m Telescope 26