A 2 second occultation was recorded by John Broughton, using a Newtonian Telescope and LN-300-11673 camera.

A 5 second occultation was recorded by John Broughton, using a Newtonian Telescope and LN-300-11673 camera.

A 5 second occultation was recorded by John Broughton, using a Newtonian Telescope and RunCam Night Eagle Astro camera.

1 miss was recorded for this event.

View the IOTA update.

Observers:
  1(M) J Broughton, Reedy Creek, Queensland, Australia     
  2    J Broughton, Rochedale, Queensland, Australia       
  3    J Broughton, Beerwah, Queensland, Australia         
  4    J Broughton, Coles Creek, Queensland, Australia     
  5(P) Prediction- IOTA Feed                

       

Discussion:

The DAMIT model above is plotted at the expected diameter of Dembowska. The model has been plotted to fit the observed chords. The centre line of the event appears close to, but slightly north of, the predicted path.

The figure below shows the Tangra light curve of the occultation. Curves here

Observational Data:

Observation details for MP ( 349 ) Dembowska
By Star              UCAC2 39615003
On 2017-08-07  at 18:20:07.0

_______________________________

Observer   John Broughton
Location   Reedy Creek, QLD, AU
Longitude  +153:23
Latitude   -28:06
Altitude   66 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear 
Camera Type  Watec 120N+    PAL/CCIR      
Camera Delay 
Timing     GPS - other linking Video with frame analysis

Missed

Comments:     

_______________________________

Observer   John Broughton
Location   Rochedale, QLD, AU
Longitude  +153:06
Latitude   -27:33
Altitude   16 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear 
Camera Type  LN-300-11673   PAL/CCIR      
Camera Delay 
Timing     GPS - other linking Video with frame analysis
Disappearance  18:20:05.73
Reappearance   18:20:07.97
Comments:     

_______________________________

Observer   John Broughton
Location   Beerwah, QLD, AU
Longitude  +153:01
Latitude   -26:51
Altitude   28 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear 
Camera Type  LN-300-11673   PAL/CCIR      
Camera Delay 
Timing     GPS - other linking Video with frame analysis
Disappearance  18:20:03.96
Reappearance   18:20:08.76
Comments:     

_______________________________

Observer   John Broughton
Location   Coles Creek, QLD, AU
Longitude  +152:43
Latitude   -26:20
Altitude   80 m
Datum      WGS84
Telescope Newtonian
Aperture   32 cm
Seeing     Steady Clear 
Camera Type  RunCam Night Eagle Astro     PAL/CCIR      
Camera Delay 
Timing     GPS - other linking Video with frame analysis
Disappearance  18:20:02.97
Reappearance   18:20:07.93
Comments: