ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2020 Apr 02, 03:50 (UTC) STAR: UCAC4 437-064975 mv: 14.5 mag ASTEROID: (2363) Cebriones mv: 16.3 mag (diam. 96 km) combined magnitude: mv: 14.3 mag delta-magnitude: mv: 2.0 mag 2 OBSERVER: Name: Andreas SCHWEIZER E-mail: aschweiz@mac.com Address: Strumbergaecherstr. 3A, 8907 Wettswil, Switzerland 3 OBSERVING STATION: Nearest city: Buelach, Switzerland Station: Observatory Buelach (MPC Observatory Code: 167) http://www.sternwartebuelach.ch/ Latitude: N 47 31 10.4 (WGS84) Longitude: E 08 34 14.3 (WGS84) Altitude: 550 m (MSL) (WGS84) Predicted observation: no (located OUTSIDE of predicted shadow path, 159km E of C.L.) Probability: 14.1 percent Single station: Andreas SCHWEIZER +----------------------------------+ 4 TIMING OF EVENT: | | | OCCULTATION RECORDED: NEGATIVE | | | +----------------------------------+ 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 03 50 05.826 +/- 0.001 s : Start observation (UTC) D - +/- - : Disappearance (UTC) R - +/- - : Reappearance (UTC) E 03 51 26.423 +/- 0.001 s : End observation (UTC) Duration: - +/- - : (predicted: max. 6.0s) P 03 50 46 +/- 9 s : Predicted time (UTC) 5 TELESCOPE: Type: Newton Reflector f/5 Aperture: 500 mm Focal length: 2500 mm Magnification: focal (resulting field of view: 15.5' in x-axis) Mount: equatorial Motor drive: yes 6 TIMING & RECORDING: Time source: GPS Quality of signal: Accuracy 3m Camera/Sensor: Digital Camera with integrated GPS-VTI (Prototype v2b, #7) IMX174LLJ, Pixel size 5.86my, QE ~77% @ 530nm Website of the project: https://groups.io/g/d-vti-cam/ Settings: 960x600, 2x2 Binning, Exposure time 200ms (5 fps), Gain +20dB, Format ADV 16 Bit Dark frame subtracted Time insertion: - within Camera, visual and digital GPS timestamp (highly accurate) - Backup with NTP synced PC timestamp (not accurate, just used for comparison purposes) 7 OBSERVING CONDITIONS: Atmospheric transp.: good Moon: below horizon Wind: no Star image stability: very good Altitude of star: 40 deg Azimut of star: 184 deg in Ophiuchus 8 ADDITIONAL COMMENTS: Feed: LuckyStar Video recording software: DvtiCamControl v4.9.2 Light measurement tool: Tangra v3.6.23 Remarks: Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)