Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  27 Cas)  ·  IC 59  ·  IC 63  ·  The star Navi (γ Cas
The ghost of Cassiopeia, Michele Campini
The ghost of Cassiopeia
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The ghost of Cassiopeia

The ghost of Cassiopeia, Michele Campini
The ghost of Cassiopeia
Powered byPixInsight

The ghost of Cassiopeia

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Description

First LRGB image that I make with the PDS200 with a bit of H-Alpha in addition.
The result, I must say, went beyond my expectations and apart from a few defects I'm starting to appreciate this newton that I collimated as soon as I arrived and afterwards I have not retouched and considering that I have already assembled and reassembled it several times I must say that I stayed pleasantly surprised at how it holds collimation.
The biggest flaw is the protrusion of the focuser inside the tube: it is the one that created the most "important" beam in the blue channel and that spoils the symmetry around the big Navi (the star at the top right).
There is also the large halo around the star and that small reflection at the bottom left which is nothing more than a sort of "reverberation" of light from the same Navi.
At the top left instead that line that you see is not a satellite but is the spike of another large star out of range.

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The ghost of Cassiopeia, Michele Campini