A 15 second occultation was recorded by Dave Herald, using an SCT Telescope and Watec 910BD camera.

An 8 second occultation was recorded by John Newman, using an SCT Telescope and Watec 910BD camera.

One miss was recorded for this event.

View the IOTA update.

Observers:
  1(M) D Hooper, Melbourne, Victoria, Australia
  2    J Newman, Canberra, Australian Capital Territory, Australia
  3    D Herald, Murrumbateman, New South Wales, Australia 
  4(P) Prediction- IOTA Feed                

         



       

Discussion:

The ellipse above is plotted at the expected diameters of Gunila. The ellipse has been plotted to fit the observed chords. The centre line of the event is clearly to the west of the predicted path.

The figures below show the Tangra light curve of the occultation.

Newman:

Hherald:

Observational Data:

Observation details for MP ( 983 ) Gunila
By Star              UCAC4 334-126500
On 2017-04-18  at 14:51:09.0

_______________________________

Observer   Dean Hooper
Location   Melbourne, VIC, Australia
Longitude  +145:05
Latitude   -37:59
Altitude   10 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   28 cm
Seeing     Slight flickering Clear Nearby quarter Moon
Camera Type  Watec 910HX    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Miss Gain reduced to 37dB to lessen bright background noise. 

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW, Australia
Longitude  +148:59
Latitude   -34:57
Altitude   594 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   40 cm
Seeing     Steady Clear 
Camera Type  Watec 910BD    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  14:52:21.40
Reappearance   14:52:36.72
Comments:  Lightcurve from 14:50:30 to 14:54:01 by Tangra v3.6.3 using AperturePhotometry/AverageBackground. 
Analysis by AOTA v4.2.12.0. Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   John Newman
Location   Canberra, ACT, AU
Longitude  +149:02
Latitude   -35:11
Altitude   657 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   40 cm
Seeing     Steady Clear 
Camera Type  Watec 910BD    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  14:52:21.72
Reappearance   14:52:29.68
Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.8