香港同好觀測提交記錄
2UCAC 45491367(mag 11.8) by (697)Galilea on 2011 Oct. 20
**** Positive observation:
Observer: Taksun Poon, Kenneith Hui
Place: Hokoon Science Centre, Kowloon, Hong Kong, China
Long.: 114o 06' 28.4" E, 22o 23' 01.7" N,
Height: 160m (WGS84, MSL)
Method: Video with frame analysis; RC-type reflector 50.0cm F8.0
Time signal: GPS-time inserted
Result: D 18h 03m 19.43s +/-0.55s
R 18h 03m 24.75s +/-0.55s
Note: Observation was made from 16h 58m to 18h 20m.
Star and asteroid merged at 17h 55m,
separated at 18h 12m 55s.
Conditions: clear, lights; stability: slight flickering.
Very rough estimation due to ccd problem.
StellaCam was set at 6 (32 frame integration)
The timing was based on GPS insertion onto video stream.
The time resolution was limited by the detection limit
of the StellaCam3. Setting 6, which is equivalent to 32
frame integration, was used, meaning a time resolution
of 1.1 second. The error of 0.55 second was based on
odd/even frame estimation.
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發表於 2011-10-22 16:41:45
