Alpha Lyrae Theia90 Review

Matthew Hodgson over at Alpha Lyrae Recently reviewed our Theia90 Diagonal. You can check out the full review over on his page (Review Link). Here are a few of our highlights:

“First impressions of the diagonal itself are very favourable, looking like a solid and well-engineered piece of equipment.“

“The inner structure is painted flat black to minimise internal reflections, and in use I noticed no difference between the Theia90 and other diagonals in my possession that have additional micro baffles, in off-axis stray light control, when placing a last quarter moon just outside the field stop“

“Using Jupiter and a third quarter Moon, I evaluated scatter around the object which can diminish the visibility of low contrast surface features.  If there were any differences in brightness and extent of the scatter (measured against the position of the Galilean satellites), I was unable to see it.“

“All these tests lead me to conclude that mirror in the Theia90 is of high quality and very much the equal of other quality, highly reflective mirror diagonals”

The review is nice and detailed so we highly recommend reading the whole thing along with his review of our rotating eyepiece turret. You can also check out the Astronomy Now review for the Theia90 Diagonal by clicking here