Venus

All images have been acquired with a Celestron Schmidt-Cassegrain 235 mm telescope

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  Venus 2013
C14 telescope, infrared filter
 

Fair to goog seeing. Note the complex clouds structure in infrared. Daylight image
 

Good seeing. IR image in daylight
 

Fair seeing. IR image in daylight
 

Fair seeing. IR image in daylight
 

Fair seeing. IR image in daylight
 

Bad seeing. IR image, first of the season in daylight

 

  Venus 2012
C14 telescope
 
 

Fair seeing
 

 

Very good seeing. Small scale clouds visibile. IR image

Good seeing, IR image

Poor seeing, IR image

Fair seeing, IR image

Fair seeing, some small scale clouds. IR image

Poor to fair seeing. IR-UV images show different clouds

 

  Previous Venus seasons
C9,25 telescope
 
 
 

Fair to good seeing. Still small scale features in IR image
 

 
 

Fair seeing. infrared image confirms the patterns seen in the previous observations

 

 

Venus grow in diameter in few days, approaccing the maximum elongation. Infrared image

 

 

Fair to good seeing. Still prominent infrared patterns in the atmosphere of Venus

 

 

Fair seeing. Infrared image shows pattern similar to May 25 image

 

Good seeing. Infrared image shows clouds structure similar to May 25-26 images

 

 

Fair seeing, only infrared image because the clouds 

 

Very poor seeing. Still some features in UV and IR, but quite blurred

 

Full complete spectral coverage of Venus clouds with good seeing. Note the similarities of IR images respect to the previous day

 

Near infrared images with excellent seeing show many small scale clouds and their movement.

 
 

Full complete spectral coverage of venus clouds with good seeing

 

Full complete spectral coverage of Venus clouds

 

 

Infrared and UV images showing the rotation of clouds deck

 
 

Uv and IR images. Note the rotation of IR clouds in 4 hours.

 

Fair seeing. Infrared image only

 

Reprocessing of two best images of Venus during 2010 elongation, showing the results in near UV (left) and near IR (right) achievable with a 235 mm telescope

 



Poor seeing. Infrared images taken with an IR 1000 and methane filters (890 nm).

 



Poor seeing, only IR image (965 nm)

 



Poor seeing in UV but excellent seeing in IR. Note the small scale clouds 

 

UV map of 25-29 rotation

 



Ultraviolet image and 4 infrared images showing clouds rotation

 



Ultraviolet and infrared images showing the rotation of clouds

 

 



UV and IR images. Note the different aspect of the clouds

 

UV and IR images showing clouds rotation. The superrotation of the atmosphere is visibile in both wavelengths, although IR wind speed is smaller than UV

 

Poor seeing. UV image

 

Very good seeing. Many details in UV and IR image.

 

The Venus nightside imaged at 1 micron wavelength shows cleary some surface details. Comparison with altimetric radar image taken by Magellan spacecraft shows a perfect matchig.
 

 

 

Low clouds patterns in the nightside of Venus

 

A completa cylindrical map showing the cloud coverage of April 6-9 2010 rotation

 

Poor seeing. Curious dark structures at equatorial latitudes
 

 

Fair seeing. Some low scale bright clouds can be seen near the left limb

 

Poor seeing. A prominent dark cloud

 

Poor seeing. Bright equatiorial clouds
 

 

Good seeing. Venus shows fine details in the thick and complex cloud's structure 

Venus in 2010. Poor seeing but large scale structure of the complex cloud's system is visible

Poor seeing, another daylight image. The Y shaped clouds appear again, as in the April 23rd and 10th 2007 images
 

Poor seeing. Dark cloud close to the equatorial regions

New season of Venus, daylight image at UV wavelength

Good seeing. Another comparison bewteen UV (left) and IR image, and an attempt to built a color picture made of those two channels
 

Poor seeing. comparison bewteen UV (left) and IR image. The features of che clouds are completely different
 

Good seeing, IR 1 micron image shows some features and their moion across the time

Good seeing. A prominent equatorial bright cloud

Cylindrical map of 20-23 April rotation. Compare this map with the previous to see the changes in cloud structure
 

Very good seeing. The classical Y shaped of the clouds clearly visible

Fair to good seeing. High contrast of the dark equatorial and filiform cloud
 

Poor to fair seeing. Some small dark features in the clouds

Poor seeing. Note the evolution of the clouds compared to April 16th image

Cylindrical map of 16-19 April rotation at UV wavelength
 

UV (left) and IR image at 1 micron showing details at different optical depths.

UV image with poor seeing. Note te complex cloud structure near the venusian equator

Poor seeing. Another comparison between violet and UV image
 

UV and violet image showing the same strange C shaped structure in Venus atmosphere

Very poor seeing, Comparison bewteen CCD camera with U filter and webcam with violet N.47 filter.
 

Poor seeing. Violet image with a webcam

Cylindrical map of the clouds from 7 to 10 April 2007

Fair seeing, daylight image. Prominent dark equatorial cloud

Daylight image at UV wavelength. Again the Y shaped cloud at the equator

The venus nightside glowing at IR wavelength. Some irregularities visible; maybe real details?
 

Daylight image. A thin crescent in IR light

Daylight image in IR and Violet light. Some low contrast features in IR image, Y shaped cloud in UV picture.
 

Poor seeing. Dark cloud at equatorial latitudes
 

Good to very good seeing. Again the Y shaped clouds near the equator
 

Good seeing, violet light, next day. Not the change in clouds features

Good seeing, violet light. Clouds features clearly visible

The Y shaped clouds at violet walenength

Visible light; Venus at dicotomy

First image at UV-violet wavelengths shows some large scale structures in Venus atmosphere