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Originally Posted by janoskiss
The Stratus will probably vignette in the Shorty Plus.
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Steve,
Why ? The shorty plus has 26mm of clear aperture. In addition I have only recommended the 13mm and 17mm Stratus, these focal lengths should be fine with this barlow. If my 20mm Pentax XW with a 70 deg AFOV works ok in why would you expect the 13mm and 17mm Orion Stratus with a 65 deg AFOV to vignette.
CS-John B