Quote:
Originally Posted by milkyway_dingo
I checked out M22 the night I got it, & through the zoom (set at 24mm), it was fainter & more blurry then when I switched back over to the 25mm. 
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Some of the zooms are poor at one end of their range. The Celestron has its poorest image quality at 24mm (although it should still be fine on axis). It also has a narrow field of view at 24mm, the afov being about 40 degrees. It should perform better at other settings.