Meade’s LX90-ACF features an optical design that eliminates the optical defect coma.
Astronomy: William Zuback
This review, “Meade’s LX90-ACF eliminates coma,” appeared in the December 2008 issue of Astronomy magazine
The tried-and-true 8-inch telescope from Meade has taken another step forward with the latest version, the LX90-ACF. “ACF” stands for “Advanced Coma-Free.” Coma is an optical defect that distorts off-axis images (those far from the field of view’s center). The LX90-ACF comes equipped with multicoated optics, a GPS receiver, two finder scopes, Level North Technology, and the AutoStar controller with Auto-Align software. Meade’s design of this telescope emulates the optical performance of a Ritchey-Chrétien design (which also eliminates coma), but at a fraction of the cost.
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