Quote:
Originally Posted by RyanJones
Did you mean too close instead of too far away ? Too far away introduces a curvature pattern where the stars elongate in a circular pattern. Too close gives elongation towards the outer edges. You can get fine tuning rings or variable adaptors to change the spacing. That way there’s never a stress about the density of the star field.
Totally agree about leaving the cluster in. It certainly improves the overall image. As far as clusters go it’s a really nice one.
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Ryan
I just checked my set up
On the 2600MC distance from sensor face to face of camera housing is 17.5mm
Extension adapter ( 1x M42M-M42F ) 21mm
Extension adapter ( 1x M42M-M48F ) 16.5mm
Allow 1mm of tolerance
Total distance sensor to Baader Mk3 CC is 56mm
So it is within the technical parameters of the coma corrector to sensor 55mm +- 1mm
I’m still getting a bit of coma on the edges
Martin