Montreal

Venus 196101092125

Venus on 1961 January 9/10 at 16:25-16:45 local time (21:25-21:45 UT) as sketched by K.R. Brasch. 8" reflector at 165x. Seeing 0-3. Transparency 5. Disk of planet unusually bright with only slightly less intense area marked 9.5, otherwise featureless without filter.

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Venus 196101052200

Venus on 1961 January 5/6 at 16:55-17:05 local time (22:00 UT) as sketched by Geoffrey Gaherty, Jr. 8" Cave reflector at 180x. Seeing 3. Transparency 2-1. Transparency deteriorated at end of drawing making intensity estimates impossible.

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Venus 196101032130

Venus on 1961 January 3/4 at 16:30-17:05 local time (21:30-22:05 UT) as sketched by K.R. Brasch. 8" reflector at 165x-300x. Seeing 4-6. Transparency 3. Dusky shadings extremely indefinite + washed out; only definite area was white patch in SW, brightest area on disk 9.5. Despite good seeings + filter, markings were more to difficult to see than on other occasions.

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Venus 196101022150

Venus on 1961 January 2/3 at 16:50-17:20 local time (21:50-22:20 UT) as sketched by K.R. Brasch. 8" reflector at 165x-300x. Seeing 4-6. Transparency 4-2. Occasional hazy clouds moved over planet causing very good seeing + a beautiful view. Detail very indefinite even with V filter + good seeing. Neither cusp region prominent as whole disk appeared uniformly dusky. Terminator very close to centre.

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Venus 196012271903

Venus on 1960 December 27 at 14:03 EST (19:03 UT) as sketched by Constantine Papacosmos. 6" refractor at 150x. Seeing 2-3. Transparency 3.

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Venus 196012271905

Venus on 1960 December 27 at 14:05-14:09 local time (19:05-19:09 UT) as sketched by K.R. Brasch. 6" refractor at 150x. Seeing 2-3. Transparency 3.

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Venus 196012242150

Venus on 1960 December 24/25 at 16:50 +10m EST (21:50 UT) as sketched by Jim Low. 4" reflector at 167x. Seeing 3. Transparency 3.

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Venus 196012241900

Venus on 1960 December 24 at 14:00-14:10 local time (19:00-19:10 UT) as sketched by G. Wedge. 6" refractor at 150x. Seeing 4. Transparency 3. Daylight observation. Intensity estimates very unreliable. First attempt at such. Made after seeing other drawings.

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Venus 196012241752

Venus on 1960 December 24 at 12:48-12:57 local time (17:52 UT) as sketched by G. Gaherty. 6" refractor at 150x. Seeing 3-1. Transparency 4 (daylight). First attempt at intensity estimates of Venus; of doubtful value.

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Venus 196012202100

Venus on 1960 December 20/21 at 16:00-16:30 local time (21:00-21:30 UT) as sketched by K.R. Brasch. 8" reflector at 165x. Seeing 3-5. Transparency 4-5. Seeing very good (5) for short time. Drawing I: no filter. Drawing II: Wratten 47B – deep violet filter. Difference between two drawings quite definite.

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