CHAMÄLEON + ONJALA OBSERVATORY
The Jupiter opposition in June 2019
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On 10 June 2019 Jupiter was in opposition to Earth. At a distance of only 641 million km from Earth, the planet appeared with an apparent diameter of 46 arc seconds. At our observation site in Namibia, Jupiter culminated at an altitude of up to 89 degrees above the horizon.


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Changes around the GRF in June and July 2019

The picture on the left shows the position of the southern equatorial band (SEB) and the southern tropical zone (STrZ). Most of the changes were visible in the area of the circular marker.

Generally 3,000 single images were taken, of which 300 were stacked avifile each. The color scheme of the finished images was adapted to images taken by Voyager II (see images below). Recording optics was a Celestron C14 in primary focus (f = 3,900mm), together with a ZWO ASI 224C and a Baader IR pass filter. ALL images in the image compilations are shown at a scale of 1: 1, the image orientation is always: South up, East left.






The following picture sets can be enlarged by clicking on them
         Changes around the GRF in June 2019
 
Changes around the GRF in July, August and September 2019        
 
The picture series

The best seeing window with subarcsecond resolution at our observation site is often in the time shortly before and after sunset, which means that many of the raw avalanches were taken under bright skies. In August we had the "luxury problem" that Jupiter culminated around sunset at an altitude of 89 degrees above the horizon. Due to the dome construction we could not adjust Jupiter at best seeing, the dome gap covered the opening of the C14 and so there are only few pictures from August.



Jupiter and GRF in June and July
Jupiter and GRF August to October and "best of" GRF

"Best of" changes around the GRF from June to September

Jupiter with central meridians without visibility of the GRF

Jupiter moons, light and shadow plays

Sun Moon Solar System DeepSky Widefield Miscellaneous Spec. Projects

 
All Images and all Content are © by Wolfgang Paech + Franz Hofmann