Was the image captured with a

Home Forums Imaging A ring around a red star Was the image captured with a

#582649
David Strange
Participant

Was the image captured with a reflector or refractor? If the latter, the ring may have been caused by the star showing excess infrared emission hence out of focus with respect to other stars. Advise him to take another image of the same star field, but this time refocus on the star with the ring. If that sharpens then all the others will look like planetary nebulae – proving the point!

David