Progress of the 40m Thai
National Radio Telescope& RANGD project
Phrudth Jaroenjittichai
Project Manager
NARIT
Boonrucksar Soonthornthum, Saran Poshyachinda, Busaba H. Kramer,
Pitak Kempet, Kitiyanee Asanok, Nattaporn Thoonsaengngam, and RAOC/SAT members at NARIT
杉山 孝一郎 and 砂田 和良 (NAOJ) as well

Japan VLBI Consortium Symposium 2019
November 23 and 24, 2019www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Radio Astronomy Network and Geodesy
for Development (RANGD)
2017-2021“Capacity Building Through Radio Astronomy”••

Thai National Radioastronomy Observatory (TNRO)• 40m Thai Radio Telescope (TNRT)• 13m VGOS Telescope• Visitor Centre
Receiver and Electronics Laboratories••

www.narit.or.th

Human ExpertiseWorkshops & Seminars
Trainings & Staff exchange

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

History
Workshop
…2013
2014

•

NARIT-KASI winter school

Radio Astronomy Workshop (P.
Thommasson)
2015 • Radio Astronomy & Geodesy
Workshop (H. Schuh)

Telescope

Site•

3m SRT, 4.5m SRT•

RFI U. of Malaya (with Roslan
Umar supervised by Dr. Zamri)•

Present the idea to MOST
Minister•

RFI 100-3300 MHz x 6 locationsin Chiang Mai••

EAVN workshop 2015
(Hokkaido)• AOV meeting @Hobart•

NARIT-KaVA winter school• Training on Radio Telescope
Principles (P. Thommasson)•

RANGD Proposal
Submitted• KaVA meeting @Krabi• RANGD Project Approval• TVN Collaborative
Workshop @Krabi•

Newton Fund I seminar series• Newton Fund I summer school2017 • 2nd Radio Astronomy & Geodesy
Workshop (H. Schuh)•Contract Awarded to MTM• TNRT subsystem projects
started• Site permission from King Rama
IX’s office

•

•

2016

•

•

2018

•

NARITSOKENDAI Winter School 201…

www.narit.or.th

RFI-PTEC 20 MHz - 26.5 GHz@AstoP. @Jomthong• Meeting with Chancellor of Mae
Fah Luang University, Chiang Rai
RFI 20 MHz - 6 GHz @alternative
sites, Phrae, Maejo, Doisaket• Prime candidate @HHK

RFI 20 MHz - 6 GHz @HHK
• Site concluded @ HHK

Site construction started…

12th EAVW, Ibaraki, September, 2019

Thai National Radio Telescope•`Updated’ version of IGN’s 40m Yebes
Radio Telescope•

40m Paraboloid Antenna, CassegrainNasmyth optics•

150 um (rms) total surface accuracy(@52EL)•

300 MHz - 115 GHz•

Slew: Az 3 deg/s, EL 1 deg/s•

Pointing: 2” (no wind),
6” (5 m/s wind)•

Prime-Focus Tetrapod Head Unit (THU)

www.narit.or.th

40m Yebes, Spain

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Thai National Radio Telescope
L (1.0-1.8 GHz)
PAF, etc…

K (18-26 GHz)
C, Q, W, etc …

control room
Faraday room
Phase I
Phase II (TBC)
www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Optics
PAF L

M4L

+QW K
Yebes, IGN
www.narit.or.th

M4R

C+…

Phase I
Phase II (TBC)
Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Phase I Rx’s: L-band & K-band
L-bandK-bandPrimary Focus

Nasmyth Focus

Frequency range (GHz)1.0-1.8

18.0-26.5

Centre wavelength (cm)

21.4

1.36

Beam width (arcmin)

22

1.4

Polarisation

LinearCircular

Cross polarisation-25 dB-25 dB

RF BW

800 MHz

8 GHz

sampler

3 Gsps

>4 Gsps

Packetizer BW

1.5 GHz>2 GHzdigitisation bits
Digitizer Output< 12 bit
2 x 40 Gbps

< 12 bit
2 x 40 Gbps

Total efficiency

0.7

0.5

Gain (K/Jy)

0.32

0.23

Trx

13

20

Tsky (K)1250Tsys (K)25

70

SEFD (Jy)78

304

Position

www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

L-bandD. Singwong

www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,2019

K-bandD. Singwong

www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Quasi-optics & simultaneous KQW

18-26 GHz

75-115 GHz
35-50 GHz

Phase I
Phase II (TBC)

D. Singwong
ST. Hanwww.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,2019

Signal diagram
Primary/Nasmyth Cabins
L-band 1.0-1.8 GHz
Receivers

K-band 18-26 GHz
Receivers

Digitizers

Down Conversion

NARIT HQ
AstroPark

Fiber optics

Fiber optics

Digitizers

Packetizers

Ethernet Switch

100 dB Faraday Roomwww.narit.or.th

GPU Server #1

ObservingModes

GPU Server #2

Pulsar mode

GPU Server #3

Spectrometer

GPU Server …

Continuummode

On-site Storage

VLBI mode
Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Universal Software Backend• Versatile; one for all• Commercial Of The Shelf systems• Easy to update, scalable• Community Software• TNRT USB modes/demand

Raw input @~144 Gbps
• 1st stage Channelisation• 2nd stage• Pulsar Timing (output 8 Mbps)• Pulsar Search (output 512 Mbps)• Spectrometer (output 16 Mbps)• VLBI (output 32 Gbps)• On-site storage 320 TB @32 Gbps
• Placed inside 6x4x4 sqm Faraday Room•

• Specifications 8 USB nodes• dual Xeon Gold 12 core 3.0 GHz• RAM 64 GB• 10 x 8 TB HDD• 512 GB SSD• 100 Gbps Ethernet• 100 Gbps InfiniBand• 2 x RTX 2080 Ti
Parkes Backend Room (90s)/ATNF

www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Universal
Software
Backend (USB)www.narit.or.th

Universal
Software
Backend

12th EAVW, Ibaraki, September, 2019

Location

Huai Hongkhrai Royal Development Study Center

Radio Quite Zone
National Broadcast andTelecom Commission (NBTC)July 2019

September 2019www.narit.or.th

12th EAVW, Ibaraki, September, 2019

September 2019www.narit.or.th

12th EAVW, Ibaraki, September, 2019C-band (Sino-Thai/SciTech; funded)RF band4.55-13.65 GHz

FDR

1/2020

Polarisation

Lineardevelopment

2020

IF band???

ADC>2 GHz

final assembly

early 2021

TNRT installation

mid 2021

Sampler

www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

2019
Sep

MTM
assembly

Oct

2020

Nov

Dec

Jan

alignment/sub-assembly

Feb

Mar

big
lift

final
assem photo
blygramtrackin metryg

L- assembly

Final
KShipmefabrication/as Test/tr
nt
ainingsemblyRF/mechanic
fabrication

RF
Final
Ship
assem Shipme
toassembly at
nt
bly/tes
Yebes
NARIT
ts

Telescope Control
SystemFinalise SAT
test pipeline

TCSHologr
aphy
comp
onent

Universal
Software
Backend

USBUSB full
USBfunction
Interfa Spectrometer
pulsars onceimplementatioGPUmoden on GPUprotoc
server@Manc@Astropserverolhesterark@Astropark

L-/K-band

Holography

Time &
Hmaser &Frequency GPU delivered
www.narit.or.th

TCS-USB
interface

Time & Frequency
test setup

Apr

2021
May

Jun

2022

jul-dec

Single(Site Acceptance Test) Dish/VLBI&
commissio
technical tests
ning
SAT

Site
Installation

Full
Backend
Implementation(TCS-USBT&F)

ประชุมผู บ้ ริหาร สิงหาคม 2562

KVN
Takahagi 32 m
©NAOJ

CVN

JVN

TNRT40from EAVN web-site
20XX semester ??

(EAVN)

UV-coverage : EAVN + TNRT40
Declination +40°

Declination −29°

©K. Sugiyama

4.5m Small Radio Telescope
HTSC receiver (collaboration with Toshiba co.)1400-1427 MHz (HI)1610-1670 MHz (OH)
2200-2350 MHz• Tsys 200-300•

www.narit.or.th•

Being used for HI galaxy rotation/sky survey•

Plan to upgrade for Pulsar observation
Software Defined Radio (SDR) (ettus N310, 100 MHz
bandwidth, 16bit)
baseband dump, psrfits/psrdada, off-line dspsr folding.

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019

Research & Job Opportunity• Research topics in Astronomy & Engineering• Pulsars:• Pulse profile evolution• Glitches & timing noise• Fast photometry for pulsar astronomy• DSP with SDR and pulsar backend• RFI mitigation• Star-forming regions:
Vela/Chandra• Periodic / accretion bursting masers• Complete molecular / maser line survey• Galaxy / AGN / Magnetar / Eclipse binary / VLBI
• Instrumentation:• Optical design for feed & passive component• Dual-pol feed & receiver systems of 4.5m

SRT

• Optical telescope for TNRT’s pointing model
Saral et al. 2015; Spitzer IRAC band
Alex Dunning (ATNF)• Radio Astronomy Lecture(s) @CMU/Physics• Astrophysics/radio telescope principles• Hands-on data analysis• Recruitments• 2 telescope operators (2020)• research assistants/supporting scientists

www.narit.or.th

Japan12th
VLBI Consortium
23 and 24,
2019
EAVW,Symposium,
Ibaraki,November
September,
2019