Celestial hemisphere:  Southern  ·  Constellation: Scutum (Sct)  ·  Contains:  Amas de l'Ecu de Sobieski  ·  M 11  ·  NGC 6705  ·  Wild Duck Cluster
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M11 - Wild Duck Cluster in Spring, Kevin Festini
M11 - Wild Duck Cluster in Spring
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M11 - Wild Duck Cluster in Spring

Getting plate-solving status, please wait...
M11 - Wild Duck Cluster in Spring, Kevin Festini
M11 - Wild Duck Cluster in Spring
Powered byPixInsight

M11 - Wild Duck Cluster in Spring

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Description

Spent the start of the night collimating the C6 then wanted to set my sights on a target that I could get feedback on the collimation and field flatness of the 0.63 reducer.

Swung it over to a rising M11. Thought it would be a good test since the entire frame is filled with stars.

Collimation seems OK but star shapes are getting weird and distorted at the edge of the APS-C sensor frame. 105mm back focus should give me the recommended distance with the flattener. Stars in the center are sharp and guiding was sub 0.6" so pretty sure it's the flattener.

Still a visually pleasing image as long as you don't pixel peep at the edges.

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M11 - Wild Duck Cluster in Spring, Kevin Festini