neo research project in korea wonyong han 1, yong-ik byun 2, hong-suh yim 1, young-jun choi 1,...
TRANSCRIPT
NEO Research Project in Korea
Wonyong Han1, Yong-Ik Byun2, Hong-Suh Yim1,Young-Jun Choi1 , Hong-Kyu Moon1 & NESS Team
1Korea Astronomy and Space Science Institute (KASI)
2Yonsei University
Contents
1. Brief History2. Ystar-Neopat Program3. Ness program4. Future work
1. Brief History
1998 : YUO1 started YSTAR2 program and developed 50-cm
wide-field telescope systems for detection and monitoring
optical brightness variations and moving objects.
1999 : KASI3 formed a task force named NEOPAT4 and
started NEO follow-up observation using their 0.6-m and
1.8-m optical telescopes.
1Yonsei University Observatory, 2Yonsei Survey Telescopes for Astronomical Research
3Korea Astronomy and Space Science Institute, 4Near-Earth Object PATrol
1998~1999 (Preparation)
The Korean Ministry of Science and Technology
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 together 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 2nd 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 ob-
servatory for network & stereo observations.
2007~ (NESS Program)
2. YSTAR-NEOPAT Program
• 0.5 meter aperture
• FOV 1.73 1.73 deg with 2k CCD
• Reaches ~ 17th 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
DATAData 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 candidate, a stamp
animation and report file is created and forwarded to Ko-
rea 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 prepara-tion)
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)
Num
ber
of
candid
ate
s
Num
ber
of
candid
ate
s
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 observa-
tions, 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) tele-scopes.
Please see the Poster
“Stereo Observations for Near Earth Space Survey”
4. Future Work
Near Earth Space Survey (NESS)
Network of Automatic Observatories
T1Sutherland
T2Siding Spring
T3Daejeon