astroavani Posted May 27, 2017 Share Posted May 27, 2017 My friend Rafael Compassi has noticed that whenever he catches the Galilean satellites the tendency to appear dark central spots in Callisto and Ganymede is frequent. This led us to wonder if these spots could be an inherent consequence of capture, or even some processing defect, since they usually always manifest themselves in these two satellites. I do not know what conclusion to take, what I noticed in this photo, for example, is that the spot is not uniform, it can be seen that the region near the Dendera crater (NASA right photo) is darker than the regions around it and This was also evident in the photo I took. In the right limbo at 3am there is the Osiris crater which is quite clear, and with a certain effort you can see that in my photo this region is also a bit clearer. The truth is that at the moment I am working at the limits of resolution for the telescope and the camera that I have because of the seeing that I have had available, seeing this one, that, unlike what many may think, is far from being an Atacama. In these conditions, anything recorded in something so small can be celebrated as a victory, and brings hope that on a night of really good seeing one can have a pleasant surprise!Http://www.astrobin.com/full/297017/0/?nc=astroavani&real=&mod= Link to comment Share on other sites More sharing options...
A budding astronomer Posted May 28, 2017 Share Posted May 28, 2017 Fantastic job pal! You can definitely make out Dendera in your image. Link to comment Share on other sites More sharing options...
PeterCPC Posted May 28, 2017 Share Posted May 28, 2017 Superb image! Peter Link to comment Share on other sites More sharing options...
dweller25 Posted May 28, 2017 Share Posted May 28, 2017 Wow Link to comment Share on other sites More sharing options...
Mr Spock Posted May 28, 2017 Share Posted May 28, 2017 Lovely detail Link to comment Share on other sites More sharing options...
Ruud Posted June 4, 2017 Share Posted June 4, 2017 A masterful exposure. Congratulations! Link to comment Share on other sites More sharing options...
Pete Presland Posted June 5, 2017 Share Posted June 5, 2017 The detail certainly looks to be in the right place. Obviously these moons rotate, so we should see different features everytime or do we always see the same side on these moons? Link to comment Share on other sites More sharing options...
Moonshane Posted June 5, 2017 Share Posted June 5, 2017 Brilliant post and amazing image. I hope you are right but are you certain that at the time the image was taken was Ganymede orientated as shown? I believe the rotation is synchronous so i think this means that like our moon will always show the same face to Jupiter but not to anywhere else (I.e. us) Link to comment Share on other sites More sharing options...
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