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(meteorobs) Telescopic Meteors II: Don Macholz
From the 1979 AMS annual report comes this excellent report by Don Macholz.
He reports an average of 2.11 meteors per hour in 1553 hours of sweeping for
comets, bearing out Malcolm Currie's note on observed rates while conducting
some other program besides watching meteors. The monthly rates vary from a
low of 0.19/hour in the evening hours of March, 1977, to a high of 3.65/hour
in morning hours of August, 1978.
Table 2
OBSERVATIONS OF DON MACHHOLZ
Evening**
1977 1978
Hours/Met/Rate Hours/Met/Rate
JAN 12.25 13 1.06 17.75 18 1.01
FEB 13.50 12 0.89 0.00 - -
MAR 10.75 17 1.58 5.25 1 0.19
APR 10.50 13 1.24 9.75 6 0.62*
MAY 9.75 12 1.23 17.50 14 0.80*
JUN 9.75 9 0.92 13.00 9 0.69
JUL 11.25 16 1.42 20.25 23 1.14
AUG 11.75 24 2.04 13.00 15 1.15
SEP 14.00 15 1.07 13.50 13 0.96
OCT 15.00 25 1.67 17.25 22 1.28
NOV 17.50 24 1.37 11.25 12 1.07
DEC 21.50 26 1.21 9.50 3 0.32
TOT 157.50 206 1.31 148.00 136 0.92
Morning
1977 1978
Hours/Met/Rate Hours/Met/Rate
JAN 30.00 79 2.63 4.25 6 1.41
FEB 24.25 53 2.19 10.25 15 1.46
MAR 28.50 87 3.05 20.00 23 1.15
APR 28.75 59 2.05 16.50 8 0.48*
MAY 32.75 64 1.9S 45.50 45 0.99*
JUN 37.50 97 2.59 37.00 73 1.97
JUL 44.00 152 3.45 41.00 83 2.02
AUG 34.00 124 3.65 48.75 120 2.46
SEP 31.00 103 3.32 30.75 69 2.24
OCT 20.25 61 3.01 44.75 87 1.92
NOV 19.50 41 2.10 27.00 56 2.07
DEC 16.00 52 3.25 22.25 70 3.15
TOTAL 346.50 972 2.81 348.00 654 1.88
Telescopic meteor totals for Don Machholz since 1976:
1976: 553 hours 1312 meteors 2.37 average hourly rate
1977: 504 1178 2.34
1978: 496 790 1.59
TOTAL: 1553 3280 2.11
INSTRUMENT: 10-inch reflector, f/3.8, 36x, 2.4' diameter field.
*4-1/4-inch reflector, f/5, 25x, 3.0' field, used for 10.50
hours in Apr. 1978 and 20.50 hours in May 1978)
OBSERVING SITE: Loma Priesta, Santa Cruz Mtns., California (elevation 3300')
PROGRAM: Comet hunting.
**Evening = before midnight PST
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