1. MODWG #03 contents of SonotaCo
How is the SonotaCo Network working ?
-- Processing data flow
-- Our experiences on the network
Solutions on UFOseries
-- UFOCaptureV2
- UFOAnalyzerV2
- UFOOrbitV2
Hints for the future
-- FBI
(a new trajectory analysis for curved meteors)
-- UFORadiant
(a prototype of actual meteor database viewer)
-- a walk in universe !
Demonstrations
-- UFOCapture
-- UFOAnalyzer
-- UFOOrbit
-- INF2MCSV
-- NightSchedular
-- UFORadiant
Observation Equipments
(cam / lens / AD / housing / grating)
Problems of current VMO design for us
-- UFOSeries for VMO
April/ 2010 SonotaCo Network

2. How is the SonotaCo Network working
Night sky video observation network on the internet, established in 2004.
Observing meteors, TLEs using UFOCapture
70 registered stations
(including 22 hi-schools)
almost 20 stations (daily reporting) cover 50% of sky above the land of Japan
April/ 2010 SonotaCo Network

3. Meteor Observations
Year
#stations
> 100 obs
#single station observations
#simultaneous meteors
Epoch
2003 1
Not analyzed
Apr: UFOCapture
Sep: UFOCaptureEx (w. S.M.)
2004 10
…10,000
Jan: UFOAnalyzer
Dec: UFOOrbit, CSV Hub
2005
…60,000
Not counted
May: UFOCaptureV2
2006 15
...100,000
7,705
Mar: UFORadiant
Oct: Finding of OCU
2007
SNM\2007.txt 20
163,804
19,274
Jan: UFOAnalyzerV2
Apr: UFOOrbitV2
2008
SNM\2008.txt 21
146,301
19,436
2009
SNM\2009.txt
22 (73cams)
180,735
25,940
Jan: J4 shower catalog
Jun: SNM2007,2008
April/ 2010 SonotaCo Network

4. 64650 meteors in 2007-2009 observed by SonotaCo Network
April/ 2010 SonotaCo Network

5. April/ 2010 SonotaCo Network
Where the Earth Collision Objects come from, and where they do not come form.
Sporadic meteors observed in
April/ 2010 SonotaCo Network

6. Processing Data flow on SonotaCo Network
April/ 2010 SonotaCo Network

7. April/ 2010 SonotaCo Network
What happened in Simultaneous Observation
-- Observation by more than 2 station happens often!
30% are observed by more than 2 stations up to 10 stations
April/ 2010 SonotaCo Network

8. April/ 2010 SonotaCo Network
Meteor Distance
Magnitude ( )
Factors :
Detection sensitivity
Natural distribution of meteor magnitude
Distance and elevation angle of cameras
Weather equality on the region
< 150km %
km 40%
km 20%
> 300km %
Up to 700km
April/ 2010 SonotaCo Network

9. Elevation angle (where is the best angle?)
Zenith was not the highest probability direction.
Effective observed area size was the major factor.
200 to 300km distance of two stations would be the best efficiency ?
April/ 2010 SonotaCo Network

10. What was got by only 2 stations
(average Qc = 39.9 deg)
(average Qc = 55.7 deg)
2 all-sky stations
(average Qc = 38.5deg) … 157km is too close!!
Only 2 cameras
April/ 2010 SonotaCo Network

11. April/ 2010 SonotaCo Network
Why SonotaCo Network is growing (what I think important to cooperate with non-professional scientists)
Network is rewarding the each observer’s efforts.
-- Multi station results can be confirmed by observer themselves very soon.
-- Members can share the delight of findings with each other on the online forum.
-- Observers are respected, cited, and often acknowledged.
-- Everyone can play a role for the latest science by acceptable expense.
Openness
-- All discussions are done on the online public forum where anyone can join in.
-- Even read only guests can see the all events that were happened near him.
Privacy keeping
-- Precise location of the stations are encrypted, and hidden from human eyes.
( almost all the home observers hoped to hide below 0.01 degree of long/lat. )
--- Nickname allowed
To allow these anonymousness, the data must be checkable its consistency, reliability, and accuracy by itself
(Now UFOOrbit is rejecting improper data and selecting their quality).
April/ 2010 SonotaCo Network

12. April/ 2010 SonotaCo Network
Conclusion
Public research on the internet has the possibility to gather tremendous number of observations.
We should create a safe, easy, and interesting online network.
( Online discussion forum may be needed for each language ).
We should create the observation database first.
Once multi-station observation begins in public, it will grow rapidly.
Simultaneous observation encourage the observers a lot.
Sharing of beautiful events is exciting itself. Actual information of what are happened in nights instincts many peoples scientific mind. If they know the possibility, observers or their cameras increase naturally.
It can be started from only 2 stations at 300km far.
April/ 2010 SonotaCo Network