A 26.3 second occultation was recorded by John Broughton, using CCD drift scan technique.

View the updated prediction.

Observers:
  1    J Broughton,Reedy Creek, QLD, AU
  2(M) J Bradshaw,Samford, Qld, AU
  3(P) Prediction  23 July

    

Discussion:

The circle above is plotted at the expected 199 km diameter of Iris. With one chord plus the miss Jonathan it is possible to determine that John was north of the central line of the event and that the actual path was about 230km south of the predicted line.

The figures below show the drift-scan image of the occultation together and the data as analysed by John's Scanalyser software.

Observational Data:

Observation details for MP (7 ) Iris
By Star              UCAC2_24430236
On 2009-07-31  at 14:38:54.0

_______________________________

Observer   J Broughton
Location   Reedy Creek,Reedy Creek, QLD 4227, Australia
Longitude  +153:23:52.9
Latitude   -28:06:30.4
Altitude   66 m
Datum      WGS84
Telescope Newtonian
Aperture   51 cm
Seeing     Steady Clear
Timing     Sound Recorder + time signal Drift scan
Disappearance  14:38:40.66
Reappearance   14:38:56.69
Comments: The magnitude drop derived from the levels in the drift scan is 0.18

_______________________________


Observer   Jonathan Bradshaw
Location   Samford, Qld, AU
Longitude  +152:52:22.7
Latitude   -27:21:22.8
Altitude   95 m
Datum      WGS84
Telescope Dobsonian
Aperture   50 cm
Seeing     Slight flickering Clear
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: This was a cert! But somehow still managed to miss… :(
 Report prepopulated by OccultWatcher's Reporting Addin ver.1.1