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A 3.71 second occultation was recorded by John Broughton at Reedy Creek, QLD, AU, by recording CCD images measured photometrically.
View the updated prediction.
Observers: 1 J. Broughton, Reedy Crk, Australia
Discussion:
The circle above is plotted at the expected 48km diameter of Kallisto. With only one chord it is not possible to determine whether John was north or south of the central line of the event.
The figures below show the drift-scan image of the occultation together and the data as analysed by John's Scanalyser software.
Observational Data:
Observer's Name : John Broughton
Aperture (cm) : 50.1
Focal length (cm) : 138
Type (e.g. SCT; Newtonian) : F/2.7 Astrograph
Magnification : CCD drift-scan at 4.1 pps, 60'FOV
Observing site name : Reedy Creek, Gold Coast
Longitude (East +ve) : +153 23' 49"
Latitude (South -ve) : -28 06' 36"
Height above Sealevel (metres) : 66
Geodetic Datum (e.g.WDD84,NZ1949): AGD66
Sky Transparency (Delete two) : Good
Star Image Stability (Delete two): Good
Other Conditions:
(Wind, Clouds, Lights, etc.): None
TIMINGS: (PLEASE REPORT IN UNIVERSAL TIME)
Time Source (e.g. WWV, VNG) : WWVH.
Recording method (e.g. tape) : Tape.
Could you see the Asteroid? : Only combined light monitored.
Approx. Limiting Magnitude : 14.5
| Estimated |
Universal Time | Reaction | Accuracy, Remarks
h m s | Time (sec) |
COLUMN FORMAT TO USE---> __:__:__._ _._ _________________)
Started Observing : 13:13:49.88 n/a 0.01
Disappearance At : 13:14:30.60 n/a 0.04
Reappearance At : 13:14:34.31 n/a 0.04
Stopped Observing : 13:15:10.53 n/a 0.01
Duration : 3.71
ADDITIONAL COMMENTS:
Rigorously timed CCD drift-scan measured in Scanalyzer:
http://www.users.bigpond.com/reedycrk/driftscantiming.htm