Astro g project vsop 2 vlbi space observatory programme 2
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ASTRO-G project VSOP-2 – VLBI Space Observatory Programme - 2. 10 times higher sensitivity . 10 times higher frequency observation 10 times higher resolution with ~ 40 m arcseconds. ~35,000 km. 9.26 m Antenna for Radio Astronomy Mass 1,300 kg (Nominal) 1 Gbps Data Downlink.

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ASTRO-G project VSOP-2 – VLBI Space Observatory Programme - 2

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Astro g project vsop 2 vlbi space observatory programme 2

ASTRO-G projectVSOP-2– VLBI Space Observatory Programme - 2

10 times higher sensitivity.

10 times higher frequency observation

10 times higher resolution with ~ 40 m arcseconds

~35,000 km

9.26 m Antenna for

Radio Astronomy

Mass 1,300 kg (Nominal)

1 Gbps Data Downlink

Observing band 8, 22, 43 GHz

Dual polarization

Phase-referencing capability

The next generation space VLBI (SVLBI) mission following the VSOP mission.


Astro g project vsop 2 vlbi space observatory programme 2

ASTRO-G project scientific objectives

Radio galaxies

Quasars

Magnetic fields of galaxies

Observe Astronomical Objects with the highest resolution.

Jets from the accretion disks around black holes

Generate VLBI Array with Ground Radio Telescopes.


Astro g project vsop 2 vlbi space observatory programme 2

ASTRO-G Schedule

FY2006

(H18)

2007

(H19)

2008

(H20)

2009

(H21)

2010

(H22)

2011

(H23)

2012

(H24)

2013

(H25)

2014

(H26)

2014

(H27)

Review for

Project Start

Review to be a pre-project

Design Review #2(PDR #2)

Launch(Planned)

Science Operation

Design Review #3(CDR)

Design Review #1(PDR #1)

System Definition Review (SDR)

Observing system Test

Integration Test

Initial Orbit Check

EDC Manufacture and Test

Flight

Operation

EDC Detailed Design

EDC Basic Design

Concept Design

LDC Manufacture and Test

LDC Detailed Design

LDC Basic Design

Earlier Development Components (EDC) (Main antenna, Ka Ant., Cryostat, Main Structure, Thruster

Later Development Components (LDC): Observing system, GPS, SLR, and other BUS system

EAVN WS 2009 Mar 18


Current status of astro g

Current Status of ASTRO-G

Satellite development

Current master schedule is based on the launch scheduled to be 2013 January/February

We are now Basic Design Phase ... (Phase -B) .

Preliminary Design Review (PDR) for earlier development subsystems (Antenna, KaANT, Structure, Thruster, Cryostat) have finished March 13, 2009. PDR of all system will be scheduled in March 2010.

Mechanical and thermal mathematical model are made, and the checking the system based on the model is on going.

Engineering Model of Horn to LNA was tested at ISAS till February.


Current status of astro g continued

Current Status of ASTRO-G(Continued)

Ground Facilities

Some Unknown factors

Tracking station

Usuda and Yebes (Spain)? now. One more?

Ground Radio Telescopes

EAVN, EVN, Australia, VLBA(?) & US, S.Africa (?), …

Japanese activities, (JVN upgrade for VSOP-2). Science Support

Correlators

KJJVC, and others (Software correlators ?)

International Collaborations

VISC-2 meeting @ December, 2008.

Submit space VLBI proposal to US Decadal Survey


Astro g project vsop 2 vlbi space observatory programme 2

Large deployable antenna system

RF Gain Requirement (43 GHz)

6

6


Astro g project vsop 2 vlbi space observatory programme 2

Radio Quiet Room in JAXA

Compact range system

(September 2008)


Astro g project vsop 2 vlbi space observatory programme 2

1.5 m meshantenna for RF test


Astro g project vsop 2 vlbi space observatory programme 2

Thermal/Vacuum

Test for a module

Of LDR

(Aug. – Sept. 2008)


Astro g project vsop 2 vlbi space observatory programme 2

22/43GHz

(@ Sagamihara / JAXA)

RF Test=>Vibration Test=>RF Test=>SHIへ

(2008/11/1-2009/2/19)

8GHz

(@ Osaka Pref. University)

RF Test=>Vibration Test(Sagamihara)=>RF Test

=>SHI  ( 2008/11/1-2009 3/M)

Frontend Development Status

43 GHz (After Vibration Test)

OK!

Frequency [GHz]

22 GHz (After Vibration Test)

OK!

22 GHz Test Set (Sagamihara)

10


Summary

Summary

Satellite development is on-going.

Engineering Model Test for Antenna, Frontend, etc.

PDR #1 is finished in March 13th, 2009.

Currently it is in basic design phase (Phase-B)

International Collaboration is on-going.


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