iceman
26-06-2009, 06:38 AM
Hi all
This image of Venus in Ultra Violet light was captured on the morning of the 23rd June – the same morning that I captured my first Mars of 2009 (http://www.mikesalway.com.au/2009/06/25/mr-first-mars-for-2009-at-a-tiny-4-9-arcseconds) and Jupiter with the NEB Upheaval (http://www.mikesalway.com.au/2009/06/23/jupiter-grs-and-neb-outbreak-june-23). It was a busy morning!
The colours reveal some albedo differences in the cloud tops on Venus, and come from a combination of using a Schuler UV filter for capturing the luminance (detail) data, and processing the image as a false-colour composite using colour data from the RGB channels as well as the UV channel.
The seeing was only average, and Venus was at a respectable 30° altitude – shining brilliantly at mag -4.18.
More here:
Venus in UV False Colour - 23rd June (http://www.mikesalway.com.au/2009/06/26/venus-in-false-colour-23rd-june)
I’m still waiting for a morning of great seeing to capture an excellent image of the cloud tops on Venus – but with the Sun not rising until 7am (well after the time I’ve had to go to work), it limits my opportunities at this time of year. Venus is on its way back towards the Sun over the next 5 months, heading for inferior conjunction in December, so hopefully I’ll get a few more chances before Venus dips too low.
Thanks for looking.
This image of Venus in Ultra Violet light was captured on the morning of the 23rd June – the same morning that I captured my first Mars of 2009 (http://www.mikesalway.com.au/2009/06/25/mr-first-mars-for-2009-at-a-tiny-4-9-arcseconds) and Jupiter with the NEB Upheaval (http://www.mikesalway.com.au/2009/06/23/jupiter-grs-and-neb-outbreak-june-23). It was a busy morning!
The colours reveal some albedo differences in the cloud tops on Venus, and come from a combination of using a Schuler UV filter for capturing the luminance (detail) data, and processing the image as a false-colour composite using colour data from the RGB channels as well as the UV channel.
The seeing was only average, and Venus was at a respectable 30° altitude – shining brilliantly at mag -4.18.
More here:
Venus in UV False Colour - 23rd June (http://www.mikesalway.com.au/2009/06/26/venus-in-false-colour-23rd-june)
I’m still waiting for a morning of great seeing to capture an excellent image of the cloud tops on Venus – but with the Sun not rising until 7am (well after the time I’ve had to go to work), it limits my opportunities at this time of year. Venus is on its way back towards the Sun over the next 5 months, heading for inferior conjunction in December, so hopefully I’ll get a few more chances before Venus dips too low.
Thanks for looking.