Celestial hemisphere:  Northern  ·  Constellation: Ophiuchus (Oph)
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Messier 81 & Messier 82, Steve Siedentop
Messier 81 & Messier 82
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Messier 81 & Messier 82

Getting plate-solving status, please wait...
Messier 81 & Messier 82, Steve Siedentop
Messier 81 & Messier 82
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Messier 81 & Messier 82

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Description

Another test with the Explore Scientific ED127CF and the Explore Scientific 3" .7 Focal Reducer/Flattener. Imaging through a light dome with no filters as well as bad seeing. Overall, I'm pleased with the field of view and the optics in general. The field is not completely flat at the outer corners, but it brings the focal ratio down to f/5 on a 5" triplet. I'm satisfied with that compromise.

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Messier 81 & Messier 82, Steve Siedentop

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Deep Sky