ASTEROIDAL OCCULTATION - REPORT FORM

    +------------------------------+  +------------------------------+
    |            EAON              |  |            IOTA/ES           |
    |                              |  |   INTERNATIONAL OCCULTATION  |
    |     EUROPEAN  ASTEROIDAL     |  |      TIMING  ASSOCIATION     |
    |     OCCULTATION NETWORK      |  |       EUROPEAN SECTION       |
    +------------------------------+  +------------------------------+

1 DATE: 06 January 2013                   STAR:  TYC 1856-00745-1 

  ASTEROID: Sylvia 		Nï: 87


2 OBSERVER_1: Name: Vasilis Metallinos
            E-mail: elpismet@otenet.gr
            Address:  Eth.Palaiokastritsas 96, GR-49100 Corfu, Greece

3 OBSERVING STATION: Nearest city: Corfu, Greece 
  Station: Mobile Station @ Alikes Potamu Beach
  Latitude: 39°38'12,37"N (GPS)
  Longitude: 19°52'38,84"E (GPS)
  Altitude: 2m.

  Datum (WGS84 preferred):

  Single, OR Double or Multiple station (Specify observer's name):


                         +----------------------------------+
4 TIMING OF EVENTS:      |                                  |
                         |  OCCULTATION RECORDED: POSITIVE  |
                         |                                  |
                         +----------------------------------+
  Type of event
  Start observation   Interrupt-start   Disappearance   Blink   Flash
  End observation     Jnterrupt-end     Reappearance    Other (specify)

                                                  Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
    S: UT 01hr 32min 20sec
     :
    D: UT 01hr 36min 20.8773sec ± 0.1 sec
    R: UT 01hr 36min 45.3736sec ± 0.1 sec
     :
    E: UT 01hr 46min 0sec
  
                          Duration : 24.73sec ±0.2 sec

                          Mid-event :UT 01hr 36min 33.2423sec   ±0.2sec

  Was your reaction time applied to the above timings? Not applicable

5 TELESCOPE: Takahashi TOA-130
1000mm
Type: Apochromatic Refractor       
Aperture: 130 mm 
f/7.7
Quiderscore: Finder-9X50

Mount: Takahashi Temma2, Equatorial, GOTO mount with TheSky6   
Motor drive: Yes

6 TIMING & RECORDING: 
  Time source: GPS++ Alexander Mier Video Time(AME) Inserter w. Garmin 18 GPS
  Sensor: Watec Wat-120n+
  Recording: Windows8, Virtualdub, avi capture with eMPIA USB 2.0 EM2841 

  Time  insertion (specify):
  Event insertion (specify):

7 OBSERVING CONDITIONS:
  Atmospheric transparency: Good     Wind: 8 m/s    Temperature: ~ +6 C
  Star image stability: no so good         Minor planet visible: no

8 ADDITIONAL COMMENTS: 

Remus and Romulus is probably negative from here but I've got some clouds after 01hr 38min 20sec, 
No light Curve confirm from my video till 01hr 38min 20sec for Remus and Romulus



Wat120n+ was recording at Slow-mode 3
So, Slow3 has Integration time [s] 0.160 & Correction time [s] -0.110:

- average level at full flux (before and after occultation) is X1, 
- average level at occultation flux is X2. 
- average level of the group (START OCC) is X3. 
- average level of the group (END OCC) is X4.

×1 = 1730
×2 = 269.9787
×3 = 559.45 
×4 = 349.675 

If X and Y are the fractions of exposure when D and R occurs, we have:
X1 X + X2(1-X) = X3 for D, so X = 0.1983
X1 Y + X2(1-Y) = X4 for R, so Y = 0.05459


D: UT 01hr 36min 20.849sec -0.11s +0.02s -> UT 01hr 36min 20.759sec
R: UT 01hr 36min 45.489sec -0.11s +0.02s -> UT 01hr 36min 45.399sec 

D: UT 01hr 36min 20.759sec -0.08s + 0.1983 -> UT 01hr 36min 20.8773sec 
R: UT 01hr 36min 45.399sec -0.08s + 0.0546 -> UT 01hr 36min 45.3736sec




Here is the light Curve 
http://www.astrovox.gr/forum/album_pic.php?pic_id=15885