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Venus Observation (June 10, 2010)

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#1 CarlosEH

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Posted 10 June 2010 - 02:42 PM

I made an observation of Venus on June 10, 2010 (00:30 U.T.) over the western sky under dusky sky conditions. Venus shined brilliantly in the sky like a beacon.

Date (U.T.): June 10, 2010
Time (U.T.): 00:30
Ls 293*, De -2.1*, Ds -2.4*
p 78%, 13.7”, -3.99m
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 295x and 388x
Filters: Wratten 23A (Light Red) and 38A (Blue)
Seeing (1-10): 5-6, Antoniadi (I-V): III
Transparency (1-6): 3

Notes:
Dusky to dull (4-5/10) albedo features are noted over the Venusian atmosphere (especially enhanced using the Wratten 38A (Blue) filter). The northern and southern cusps (polar regions) are extremely bright (9/10). The preceding limb appeared extremely bright to brilliant (9-10/10).

A digital image produced in Pixelmator.

Carlos

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#2 CarlosEH

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Posted 10 June 2010 - 02:43 PM

A star (82 Gemini/HIP 38106A, 6.85m) was visible north and following Venus. It was an impressive sight in the eyepiece field.

A digital image produced in Pixelmator.

Carlos

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#3 Kris.

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Posted 10 June 2010 - 03:31 PM

fascinating Carlos! i really got to get myself a blue or violet filter, soon!
nice background btw.

#4 mathteacher

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Posted 10 June 2010 - 03:35 PM

That is a very interesting sketch. Who makes your Mak? Thanks.

#5 Tommy5

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Posted 10 June 2010 - 10:09 PM

Another amazing sketch, i can barely make out very subtle albedo markings on venus they almost seem imaginary, your sketch is excellent and probably matches some uv photos of the planet, thanks for posting. :cool:

#6 Sol Robbins

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Posted 10 June 2010 - 10:50 PM

Carlos,

Awesome!

#7 frank5817

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Posted 11 June 2010 - 12:25 AM

Carlos,

That is a beautiful Venus sketch. Great attention to pulling out the albedo features.
Always a pleasure to see your view. :bow: :cool: :rainbow:

Frank :)

#8 CarlosEH

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Posted 11 June 2010 - 03:44 AM

Thank you all for the kind compliments on my Venus observation. The albedo features were easier to detect using the red (W23A) and blue (W38A) filters. Changes in seeing and haze will make it difficult to detect the subtle albedo features over the Venusian atmosphere. The best of luck in your own observations of Venus.

Carlos

#9 Special Ed

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Posted 11 June 2010 - 06:44 AM

Carlos,

Beautifully done and presented--Venus never looked better!

#10 Jef De Wit

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Posted 11 June 2010 - 10:50 AM

Wow, impressive sketch. I only see Venus as a dancing dot.

#11 nunciusaustralis

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Posted 11 June 2010 - 09:15 PM

Great sketches. Also saw Venus doing par with some gemini star few days ago. Well done :bow: :waytogo: :applause:

#12 CarlosEH

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Posted 12 June 2010 - 12:18 AM

Jef, Michael, and Nuncius

Thank you all for your compliments on my observation of Venus. The albedo features rendered were delicate in the eyepiece field. The filters helped significantly to bring them out. The best of luck in your own observations of Venus.

Carlos

#13 mike bacanin

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Posted 12 June 2010 - 06:39 AM

Carlos,

A beautiful rendering of venus,which i find very interesting in regard to the cloud shadings.
Thank you for sharing it with us.

Mike

#14 CarlosEH

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Posted 13 June 2010 - 04:40 AM

Mike,

Thank you for the compliment on my Venus observation. The detail over the Venusian atmosphere was very interesting. The red (W23A) and blue (W38A) filters helped to bring out the details rendered. The best of luck in your own observations of Venus.

Carlos






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