ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2020 Apr 05, 22:33 (UTC) STAR: HIP 62183 mv: 9.0 mag ASTEROID: (1719) Jens mv: 16.5 mag (diam. 19.9 km) combined magnitude: mv: 9.0 mag delta-magnitude: mv: 7.5 mag 2 OBSERVER: Name: Andreas SCHWEIZER E-mail: aschweiz@mac.com Address: Strumbergaecherstr. 3A, CH-8907 Wettswil, Switzerland 3 OBSERVING STATION: Nearest city: Wettswil, Switzerland Station: Latitude: N 47 20 30.8 (WGS84) Longitude: E 08 28 22.8 (WGS84) Altitude: 580 m (MSL) (WGS84) Predicted observation: yes (located INSIDE of predicted shadow path, 1km S of C.L.) Probability: 22.1 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 22 33 13.852 +/- 0.200 s : Start observation (UTC) D - : Disappearance (UTC) R - : Reappearance (UTC) E 22 33 43.840 +/- 0.200 s : End observation (UTC) Duration: - s : (predicted: max. 1.3s) P 22 33 29 +/- 4.00 s : Predicted time (UTC) 5 TELESCOPE: Type: Refractor f/5.6 Aperture: 107 mm Focal length: 600 mm Magnification: focal (resulting field of view: 65.0' in x-axis) Mount: equatorial Motor drive: yes 6 TIMING & RECORDING: Time source: GPS Quality of signal: Signal lost at time of recording but synchronized to 1PPS before 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: 1920x1200, Exposure time 50ms (20 fps), Gain +16dB, Format ADV 16 Bit 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: yes, 93 percent in 40 deg distance Wind: no Star image stability: good Altitude of star: 19 deg Azimut of star: 169 deg in Hydra Minor planet visible: no 8 ADDITIONAL COMMENTS: Feed: IOTA Video recording software: DVTI Cam Control v4.9.5 Light measurement tool: Tangra v3.6.23 Remarks: Remote observation (pre-pointing) Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)