All times UT unless otherwise noted

679 Pax is predicted to occult magnitude 8.3 HIP 92663 on July 16th 2015 PDT...

Contact is made with Paul Kobetz in Ukiah, who graciously invites a group of us to observe the occultation from Rubicon Observatory. It's 4km from the centerline..

Since I no longer take the 12" LX200 mobile, the main question is are there adequate optics available?? A 17" Planewave attached to a Paramount..

Mounting video to the Planewave would take some doing and I didn't arrive early enough to even try that. A couple of days prior to the event however,

I had located the the target with my ST80, using the Stellarvue 80mm Apochromatic Refractor finderscope would do nicely.. Very nicely.. :-))

The Lightcurve..

AOTA analysis of the file C:\Users\BREIT IDEAS Obs\Videos\PAX.csv
- analysed on Sunday, July 26, 2015 at 1:02 PM UTC
- using AOTA v4.1.5.8

Event #1

  Event location in video frame ID's
   D: 489.0  +4.0/-10.5
   R: 552.0  +0.5/-0.5

  Event time in UTC
   D:  5 50  1.20 ± 0.24   <-----
   R:  5 50  3.41 ± 0.02   <-----

  Duration of transition in frames
   D: 0
   R: 0

  SN at event locations
   D: 4.0
   R: 5.4
   Ave: 4.7

  Applied confidence level
   D: 90 %
   R: 90 %

===== Camera details =====
Camera                 : WAT-902H2 Ultimate
Frames integrated      : 0
Video system           : NTSC
Camera delays have been applied by AOTA to the times

==== Measurement info ====
Measurement tool       : Limovie
Measured at Field level: False
# Measurements binned  : 1
Normalisation          : None
Time scale from tool   : True

===== end of report ======

(with asymmetric transitions)

(with symmetric transitions)

The Lightcurve..

AOTA analysis of the file C:\Users\BREIT IDEAS Obs\Videos\PAX_Fields.csv
- analysed on Sunday, July 26, 2015 at 4:41 PM UTC
- using AOTA v4.1.5.8

Event #1

  Event location in video frame ID's
   D: 490.0  +10.5/-4.5
   R: 553.0  +10.0/-10.0

  Event time in UTC
   D:  5 50  1.38 ± 0.13   <-----
   R:  5 50  3.43 ± 0.17   <-----

  Duration of transition in frames
   D: 0
   R: 0

  SN at event locations
   D: 2.5
   R: 2.8
   Ave: 2.6

  Applied confidence level
   D: 90 %
   R: 90 %

===== Camera details =====
Camera                 : WAT-902H2 Ultimate
Frames integrated      : 0
Video system           : NTSC
Camera delays have been applied by AOTA to the times

==== Measurement info ====
Measurement tool       : Limovie
Measured at Field level: True
# Measurements binned  : 1
Normalisation          : None
Time scale from tool   : True

===== end of report ======

(with asymmetric transitions)

Damit Shape Model #305

Damit Model #306