THE ROYAL ASTRONOMICAL SOCIETY OF CANADA
Bulletin No. 12
GREETINGS fellow planetary observers! Since the last bulletin was issued, winter set
in and I was expecting a corresponding drop in the number of observations received.
However, this is not the case! Evidently many of you are using anti-freeze for blood,
as we have been getting a good number of mid-winter observations.
Only three Centres have not as yet become involved in our program. Recently, I received
letters reporting revivals or births of observing programs in St.John's and London. This
is most encouraging!
Remember ... your scientifically recorded observations are needed; refer to Bulletin No.9
MERCURY and VENUS: These planets are very close to the sun during the first part of
1970. We will be requiring observations of Venus, though, as soon as
JUPITER: We cannot stress too strongly the value of accurate timings of the phenomena
of Jupiter's satellites. Our professional colleagues have requested these.
The surface features on Jupiter are always changing and thus should be kept
under constant scrutiny. Remember that all of us are involved in the dis-
covery that the South Equatorial Belt appears to vary in intensity in connec-
tion with the orbital position of Callisto. More observations are needed
desperately .. please!
SATURN: We have received a good number of observations of Saturn with magnitude
estimates of the satellites - this is good, as some of them appear to be
variable. There has been an outbreak of white spots on Saturn (see January
issue of "Sky and telescope"). Your intensity estimates of the bands, belts
and rings of Saturn are needed, especially in this time of turbulence in
URANUS: Could some of our observers with 12.5" scopes (and larger) begin a program
MARS: I have Just completed an analysis of observations of Mars for 1969. A map
has been produced from your observations, which is of reasonably good
calibre. It is hoped to have the report on Mars printed in the JOURNAL or
the new national "newsletter".
A Happy New Year with clear skies to you all!
Kenneth E. Chilton,
3 February, 1970/ 93 Currie Street, Hamilton 57, Ontario
Planetary Section Bulletin No. 12