#IOTA-ES ASTEROIDAL OCCULTATION - REPORT FORM 2.03 - DVTI+CAM TEMPLATE 1.6 #Event #Occultation: POSITIVE #DATE: 12 Dec 2023, 01:13:06 #PREDICTTIME: 12 Dec 2023, 01:13:06 #STAR: HIP 27989 #ASTEROID: Leona #Nr: 319 #OBSERVER #Observer1: Stefan Meister #Observer2: #moreObs: #E-mail: meister@dolphins.ch #Address: Sandgruebstr. 9, CH-8193 Eglisau, Switzerland #OBSERVING_STATION #NearestCity: Corigliano–Rossano (CS) #Countrycode: IT #Coordinates LAT +/-DD MM SS.S LON +/-DDD MM SS.S #Latitude: +39 37 19.000 #Longitude: +016 31 41.629 #Altitude: 44 #Datum _blank=WGS84 N=NAD1927 E=ED1950 T=Tokyo G=GB1936 *=unspecified, or other #Datum: #Teleskop _=unstated 1=Refractor 2=Newtonian 3=SCT 4=Dobsonian 5=Binoculars 6=Other 7=None 8=eVscope #Telescope: 1 #Aperture in cm #Aperture: 12.5 #FocalLength in cm #FocalLength: 80.0 #ObservingMethod _=unspecified a=Analogue & digital video b=Digital SLR-camera video c=Photometer d=Sequential images e=Drift scan f=Visual g=Other #ObservingMethod: a #Observation #StartObs: 01:12:06.198 #D D=Main Star d=second Star G=satellite main star g=satellite 2nd star N=ring M=non detection +time hh:mm:ss.s #D: D01:13:02.890 #Acc_D: 0.100 #R R=Main Star r=second Star B=satellite main star b=satellite 2nd star N=ring M=non detection +time hh:mm:ss.s #R: R01:13:08.390 #Acc_R: 0.100 #EndObs: 01:14:06.226 #Duration: 5.500 #Exp_Time: 0.010 #Timesource _=unspecified a=GPS b=NTP c=Telephone (fixed or mobile) d=Radio time signal e=Internal clock of recorder f=Stopwatch g=Other #Timesource: a #Camera: DVTI+CAM, serial #17 #Signal/Noise: #Weatherconditions #Wind: #Temperature: 15.7 #Transparency 1=Clear 2=Fog 3=Thin cloud <2 [mag loss <2 mag.] 4=Thick cloud >2 [mag loss >2 mag. 5=Broken opaque cloud [that is, observed thru gaps in the cloud] 6=Star faint 7=By averted vision #Transparency: 1 #Stability _=unstated 1=Steady 2=Slight flickering 3=Strong flickering #Stability: 2 ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2023 Dec 12, 01:13 (UTC) STAR: HIP 27989 mv: 0.5 mag ASTEROID: (319) Leona mv: 14.2 mag (diam. 61.1 km) combined magnitude: mv: 0.5 mag delta-magnitude: mv: 13.7 mag 2 OBSERVER: Name: Stefan Meister E-mail: meister@dolphins.ch Address: Sandgruebstr. 9, CH-8193 Eglisau, Switzerland 3 OBSERVING STATION: Nearest city: Corigliano–Rossano (CS) Station: Relais Il Mulino, Contrada Santa Domenica, Contrada Chiubbica, 87064 Corigliano CS Latitude: N 39 37' 19.000" (WGS84) Longitude: E 16 31' 41.629" (WGS84) Altitude: 44 m (MSL) (WGS84) Single station: yes Predicted observation: yes (Distance 5.4 km from C.L.) Probability: 100.0 percent +----------------------------------+ 4 TIMING OF EVENT: | | | OCCULTATION RECORDED: POSITIVE | | | +----------------------------------+ Type of event: S = Start observation I = Interrupt-start D = Disappearance B = Blink F = Flash E = End observation I = Interrupt-end R = Reappearance M = Mid-event P = Predicted time Event Time (UTC) Acc. Comments Code HH MM SS.sss S.sss S 01 12 06.198 +/- 0.001 s : Start observation (UTC) E 01 14 06.226 +/- 0.001 s : End observation (UTC) P 01 13 06.111 +/- 0.369 s : Predicted time (UTC) (predicted: max. 11.6 s) In case of a positive event: see extracted times in the AOTA log file. 5 TELESCOPE: Type: Refractor Aperture: 125 mm Focal length: 800 mm Magnification: focal (resulting field of view: 31.4' in x-axis with 430 chip) Mount: equatorial Motor drive: yes 6 TIMING & RECORDING: Time source: GPS Quality of signal: Accuracy 2 m Camera/Sensor: Digital Camera with integrated GPS-VTI (DVTI+CAM, serial #17) Image Sensor Sony IMX430LLJ-C (1.1" 1624x1240 4.5um CIS) Website of the project: https://groups.io/g/d-vti-cam/ Settings: 408x310, Exposure time 10 ms, Gain +00 dB, Binning 4x4, Format ADV 16-bit Time insertion: Digital GNSS timestamp into image sensor data stream 7 OBSERVING CONDITIONS: Moon: below horizon Temperature: 15.7 deg C Transparency: 1 Star image stability: 3 Altitude of star: 50 deg Azimut of star: 223 deg in Orion StarConstellation: Orion 8 ADDITIONAL COMMENTS: Feed: Lucky Star Events Video recording software: DVTI Cam Control v5.7.0-37 Further Comments: Revised version from 23.12.2023 analysed with AOTA (pls. delete the previous one) See also attached detailed Report (EURASTER report below SODIS report within the text file). Tools used: PyMovie 4.0.2 and Occult/AOTA v4.2023.11.30 Wind: occasional gusty wind, but cannot quantify the Bft. class. Filter: Photometric Bessel R Filter used.