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                 ASTERIODAL OCCULTATION - REPORT FORM

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           	           EAON & IOTA-ES

               EUROPEAN ASTEROIDAL OCCULTATION NETWORK

    INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

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1.DATE: 2019/10/25
  STAR: 1B 1260-50504
  ASTEROID: (24835) 1995 SM55

2.OBSERVER:
  	Name: Gerhard Dangl
	Phone: ++43-(0)2842-53908
	Address: AUSTRIA, A-3830, Nonndorf 12
	E-mail: gerhard@dangl.at

3.OBSERVING STATION:
	Nearest city: Waidhofen an der Thaya
	Latitude:  N 48 47 13.5 (WGS84)
	Longitude: E 15 14 08.4 (WGS84)
	Altitude:  596m         (WGS84)
                   552m         (MSL)
	Single/Multiple: Single

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4.TIMING OF EVENTS:
	Occultation recorded: NEGATIVE
	Type of event:
	"S"tart observation; "I"nterrupt-"s"tart; "D"isappearance;
	"B"link; "F"lash; "E"nd observation; "I"nterrupt-"e"nd;
	"R"eappearance; "O"ther (specify)
	
	Personal Equation Substracted: No
	Event Time (UT)		P.E. Accuracy + Comments
	code: HH:MM:SS.ss       S.ss  S.ss
	
	S:    22:47:15

	E:    22:57:58
	
5.TELESCOPE:
	Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: CCD/primary focus/FOV 25.7' x 19.2' (1391 x 1039, 1.11" x 1.11" per pixel)
	Mount: Equatorial, EQ8
	Motor drive: Yes

6.TIMING & RECORDING:
	Timekeeping: Via Internet from time server University Vienna with software Dimension 4
        Sensor/Camera: Atik 314L+ B/W with Sony ICX285AL 2/3" CCD-Sensor, Lens on chip, Mode Bin 2x2, CCD cooled to 253K
	Mode of recording: It=10s (0.091 Img/s), Monochrom, Progressive scan, Interline transfer, 16bit FITS Format
	Device of recording: Notebook with SSD and OS W7/64P and recording software Artemis Capture Version 3.32.0
        Time insertion: FITS header via recording software Artemis Capture Version 3.32.0, time accuracy typical UTC +/- 50ms

7.OBSERVING CONDITIONS:
	Atmospheric transparency: fair
	Wind: no
	Star image stability: fair
	Minor planet visible: no
	Temperature: 281 Kelvin (+08 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star 1B 1260-50504, +17.5mag, 71deg Elevation.
        
        FITS evaluation accomplished with Astrometrica 4.11.1.442 and Tangra 3.6.19

        Event data details according to the predictions from Occult Watcher Feed LuckyStar.
        Predicted event time was 22:50:31 UTC (+/- 2.3min) for my observing position.
        Predicted maximum duration was 30.3 seconds with a 3.1mag drop.
        Position was 1229km from predicted central line in NW direction
        between path edge and 1-sigma line with a probability of 9.5%.
        No occultation event detected (It=10s).
        
        3-D Position
	Garmin GPS18x LVC (Update of Almanac data before recording start)
        Receiving 09 satellites
        Horizontal Dilution of Precision 0.9
        Geoidal separation 44.5m (Altitude 551.9MSL + 44.5 = 596.4 m in WGS84 datum)

        Gerhard Dangl
        gerhard@dangl.at
        www.dangl.at/
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