by Peter Bus, Klaas Jobse and Jaap van 't Leven
Leonid 2001 Photographic Hour Rates
Observer: Peter Bus
Observation site: Vega-Bray Observatorium, Benson, Arizona, USA
Site Coordinates: 31°56'26.7" N ; 110°15'27.9" W ; Altitude 1100m
Equipment: One single camera; Canon T70 + Canon Command Back
Lens: F3.2 / 28mm
Field Camera: 73° x 49°
Film: Fujichrome Sensia 400 Color Slides
Exposure times: 2m59s (1 second filmtransportation)
Observation Period: 2001, November 18, 9h27m - 11h03m UT (N Leonids = 90)
2001, November 18, 11h15m - 12h51m UT (N Leonids = 42)
Calculations: Hourrates per 18 minutes shifted per 9 minutes
Hourrates are corrected for elevation; HR= (N per hour / sin(h))
Maximum observed: Calculated Photographic Maximum at 10h27m UT = λ 236°.13 (2000.0)
Secondary Maximum? At about 12h27m UT
