gjdonatiello
High resolution imaging techniques compared on Betelgeuse and Sirius.
High resolution imaging techniques compared on Betelgeuse and Sirius
Credit: Giuseppe Donatiello
Between 2011 and 2015 I devoted myself with more resources to the experimentation of high resolution imaging techniques, both in the Visible and in the NIR. Then I gave up a bit "waiting for better times", aware of the instrumental limits. Nonetheless, the experiments carried out were published in well-known refereed specialized journals. However, sometimes I return to it with new data, especially to follow the motion of Sirius B around the main star since 2012.
Recently I have imaged Sirius and Betelgeuse with the homemade astrocamera MaxCam1280 and refractor 127ED@f/45.
On the left the images obtained with a common stack of superframes using the commercial software DENOISE#2 Pro. On the right the same superframes aligned manually with the open source PhotoScape X.
The stack has evidently produced an average of the single images with a certain degree of confusion. Instead, using the speckle technique the image is clearly more defined. Surprisingly, in the image of Betelgeuse a mysterious point source emerged unmistakably, almost in contact, well resolved in the best frames. I am sure that it is not an artifact.
For all the images I did NOT use any contrast filter or wavelets. They are raw.
High resolution imaging techniques compared on Betelgeuse and Sirius.
High resolution imaging techniques compared on Betelgeuse and Sirius
Credit: Giuseppe Donatiello
Between 2011 and 2015 I devoted myself with more resources to the experimentation of high resolution imaging techniques, both in the Visible and in the NIR. Then I gave up a bit "waiting for better times", aware of the instrumental limits. Nonetheless, the experiments carried out were published in well-known refereed specialized journals. However, sometimes I return to it with new data, especially to follow the motion of Sirius B around the main star since 2012.
Recently I have imaged Sirius and Betelgeuse with the homemade astrocamera MaxCam1280 and refractor 127ED@f/45.
On the left the images obtained with a common stack of superframes using the commercial software DENOISE#2 Pro. On the right the same superframes aligned manually with the open source PhotoScape X.
The stack has evidently produced an average of the single images with a certain degree of confusion. Instead, using the speckle technique the image is clearly more defined. Surprisingly, in the image of Betelgeuse a mysterious point source emerged unmistakably, almost in contact, well resolved in the best frames. I am sure that it is not an artifact.
For all the images I did NOT use any contrast filter or wavelets. They are raw.