Presentation on theme: "A video time inserter for the times"— Presentation transcript:
1 A video time inserter for the times IOTA-VTIA video time inserter for the times
2 Occultation timings in the 1600’s Accurate clocks not availableTimes recorded by measuring the altitude of a known star at the time of an eventAccuracy – several minutes
3 Occultation timings in the 1700’s & 1800’s Accurate pendulum clocks and chronometers in observatoriesClocks set by transit observationsVisual recording of eventsAccuracy – around 1 second
4 Occultation timings in the early 1900’s Accurate pendulum clocks and chronometers in observatoriesRadio transmission of timeVisual recording of eventsAccuracy – around 0.1 second, but affected by Personal Equation.
5 Occultation timings in the mid 1900’s Atomic clocksRadio transmission of time – eg WWVVisual, and some photoelectric, recording of eventsAccuracy – around 0.1 second, but affected by Personal Equation.
6 Occultation timings in the late 1990’s Atomic clocksRadio transmission of time – eg WWVVideo recording, but with audio time signalAccuracy – around 0.1 second, but no Personal Equation.
7 Occultation timings in the early 2000’s Atomic clocksTime from GPS systemVideo recordingKIWI system developed to insert the time into the videoAccuracy – around 0.03 second, and no Personal Equation
8 Occultation timings from 2008 KIWI system withdrawnNo readily-available commercial alternativeRepairs of existing KIWI’s not always possible.
9 Occultation timings from 26 May 2011 IOTA-VTI system becomes available
10 IOTA-VTIDeveloped by Tony Barry of Western Sydney Amateur Astronomy Group (WSAAG), with the assistance of Dave Gault (also of WSAAG)Manufactured in the US by Walt Morgan (VideoTimers) with the assistance of Sandy Bumgarner.
11 IOTA-VTI To ensure continued availability at minimal cost: Exclusive perpetual royalty-free licence to IOTA (US)IOTA (US) has granted a 5-year exclusive sub-licence to VideoTimers for the manufacture and sale
12 On behalf of Tony Barry, Dave Gault, Walt Morgan, and Sandy Bumgarner, we proudly ‘launch’ the IOTA-VTI : the next generation of video time inserter for occultation observations.