ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 27 Feb 2021                              STAR: TYC 2457-01767-1 

   COMET: 9P/Tempel                                       No: 

 2 OBSERVERS: 
  Name      : Wojciech Burzynski                    Abrr: BZY
  Address   : 15-345 Bialystok, Poland

 3 OBSERVING STATION: 
  Nearest city : Suprasl
  Station      : Lipowy Most                 Acc.
  Latitude     : 53 12 31.5 N            -   0.1"
  Longitude    : 23 31 37.9 E            -   0.1"
  Altitude     : 145 MSL                 -   1 m

  Datum (WGS84 preferred): WGS84

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

 4 TIMING OF EVENTS:  
  +----------------------------------------------+
  |       OCCULTATION RECORDED: NEGATIVE         |
  +----------------------------------------------+
  Type of event:
 "S"tart observation   "I"nterrupt-start   "D"isappearance   "B"link   "F"lash
 "E"nd observation     "J"nterrupt-end     "R"eappearance    "O"ther (specify)

  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
  S - 22:20:00.6         +/- 0.1
  E - 22:42:00.5         +/- 0.1 


  Predicted max. duration (secs) : 1.2
  Predicted max. drop (mag)      : 5.6
  Predicted mid-event (UT)       : 22:30:35
  Predicted error in time        : 10.8 min 

  Was your reaction time applied to the above timings? - not relevant
  
 5 TELESCOPE: 
  Type        : NEW  f/4.7                            Aperture   : 254 mm
  Focal length: 1200 mm                               FOV        : 32.37' x 20.23'
  Mount       : equatorial GOTO                       Motor drive: yes

 6 TIMING & RECORDING:
  Time source      : GPS 1PPS  
  Sensor           : QHY 174M GPS
  Mode of recording: 1024x768, 12 bit SER, Amp Noise Reduction=On, Gain=200
  Shutter          : 0.500 s
  Recording        : Laptop Dell Latitiude 3540 (Intel Core i5/RAM 8 GB/SSD 128 GB)
  Recording        : SharpCap 4.0.7403.0

 7 OBSERVING CONDITIONS: 
  Atmospheric transparency          : good 
  Wind  (m/s)                       : 6
  Temperature (deg C / humid.)      : 1 / 85
  Star image stability              : good 
  Minor planet visible              : no
  Local conditions (degree)         : star altitude: 53, sun altitude: -45 
  Local moon conditions (degree)    : moon altitude: 45, moon distance: 57

 8 ADDITIONAL COMMENTS:
  Observed star                           : TYC 2457-01767-1 
  Star magnitude (mag)                    : 8.0
  Minor planet magnitude (mag)            : 13.6
  Feed                                    : COMETOCC, last updated Feb 27, 2021
  Rank                                    : 0
  Distance (km)                           : 2276 km from the central line
  Shadow width (km)                       : 13
  Predicted probability OccultWatcher (%) : 0.1
  Predicted combined magnitude (mag)      : 8.0 
  Faintest star on movie (mag)            : 14.9
  Evaluation with PyMovie 2.9.3

  9 REMARKS: numerous thin clouds moving across the FOV, but the star remained visible all the time