NEO Research Project in Korea

assoverwroughtAI and Robotics

Nov 6, 2013 (3 years and 5 months ago)

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NEO Research Project in Korea

Wonyong

Han
1
, Yong
-
Ik

Byun
2
, Hong
-
Suh

Yim
1
,

Young
-
Jun Choi
1

, Hong
-
Kyu

Moon
1

& NESS Team




1
Korea
Astronomy and Space Science Institute (KASI
)


2
Yonsei University


Contents


1. Brief History

2.
Ystar
-
Neopat

Program

3.
Ness program

4.
Future work





1. Brief History


1998 :

YUO
1

started
YSTAR
2

program and

developed 50
-
cm
wide
-
field telescope systems for detection
and monitor
ing
optical brightness variations and moving
objects.



1999 :

KASI
3

formed a task force named
NEOPAT
4

and
started NEO follow
-
up observation using their 0.
6
-
m and
1.8
-
m optical telescopes.



1
Yonsei University Observatory,
2
Yonsei Survey Telescopes for Astronomical Research


3
Korea Astronomy and Space Science Institute,
4
Near
-
Earth Object PATrol





1998~1999

(Preparation)



The Korean Ministry of Science and Tech
nolo
gy
awarded a research grant to the
KASI
NEOPAT

group
to establish the
National Research Lab
(NRL)

for NEO

survey.



`



NEOPAT and YSTAR groups started to work tog
et
her in order
to combine their expertise and resources.



In late 2003, our 1st telescope, started regular operation in
Sutherland, South Africa.

In late 2005, we commissioned
2nd telescope in
Siding Spring Observatory, Australia.






2000~2005 (YSTAR
-
NEOPAT Program)





`



KASI started
2
nd

generation NEOPAT program



: NESS (Near Earth Space Survey)


This program is to develop
new 0.6 robotic telescopes
for
stereo observations
.


And also to develop
stable technology of automatic

observatory
for network & stereo observations
.

2007~ (NESS Program)




2
. YSTAR
-
NEOPAT Program



0.5 meter aperture



FOV 1.73


ㄮ1㌠摥d⁷ 瑨 ㉫2䍃C



Reaches ~ 17
th

mag with 60 sec exposures



High speed mount, 10 deg/sec

TELESCOPE SYSTEM : T1
-
T2


Sky Monitor


AWS

Enclosure


Computer

Observatory System

Computer System


Gateway


Web Server


Firewall


PROCESS


Sky Monitor


GPS Receiver


Weather Station


Telescope Control


Dome Control



WEBCAM

DATA

Data
Storage


4 Security Cameras


SCOPE


MASTER


Data Analysis


SKYCCD


MAINCCD


CCD Control

HUB

Internet

South Africa Station, Sutherland

(April, 2002)

Australia Station, Siding Spring
(December 2004)

Austrailia

Station,
Siding Spring

(
Januanry
, 2005)

DATA PIPELINE : FindMovers

On
-
Site computers run
near real
-
time image processing
and discovery routines
.

For each NEO c
andidate, a st
amp
animation and report file is created and
forwarded to

Korea
for visual confirmation.



Prepare by Y. H. Bae

South Africa Station

New Variable Stars

-

Found a few hundred of variable stars



not previously catalogued (paper in pr
eparation)

Prepare by Y. H. Bae

Moving Objects

-

Number of Nights : 73

-

Number of Mover Candidates : 1029

-

Peak Magnitude : R~15

-

Peak Velocity : ~0.2deg/day

R magnitude

Velocity (deg/day)


Number of
candidates


Number of
candidates

Prepare by Y. H. Bae

3. Near Earth Space Survey

New 0.6m telescope systems

Prepare by Y. H. Bae

Automatic/Robotic Observatory

Our
strategy is focused
to increase
sky
coverage



by employing
multiple
telescopes


Automatic Observatory
is the
best and only solution

to operate multiple telescopes
with small man power


We have developed the s/w for automatic
observations, automatic data processing and

self
-
protection in emergency.



Please see the Poster




The Small Fast Robotic Observation System


Network Observation


Multiple telescopes placed in
different longitudes

allow
continuous observations for a given target


Network Observation is a
powerful tool of time series
monitoring

for variables stars, NEO photometry and
intraday variability of many celestial objects.



Please see the Poster



The Network Observation



Using Several Robotic Telescopes


Stereo Observation

Stereo Observation is to observe to the same target
at the same time by telescopes in different locations.



For nearby targets such as NEO, stereo observations
provide accurate orbital elements quickly by direct
distance estimates.


The accuracy and range of distance measurements
depend on the separation of two (or more) telescopes.




Please see the Poster



Stereo Observations for Near Earth Space Survey





4. Future Work


Near Earth Space Survey (NESS)

Network of Automatic Observatories

T1

Sutherland

T2

Siding Spring








T3

Daejeon