takaeri
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I'm able to focus only while using 25mm with an extension tube
in Getting Started Equipment Help and Advice
Posted
Hello everyone, Im new to all of this and just got my own telescope, its 130/920 eq2. Im able to clearly see the moon and jupiter (barely) but only when I use 25mm with an extension tube, same goes for terrestrial objects such as distant chimneys or mountain tops. Besides 25mm and an extension tube I also have 10mm, 1.5x erecting lens and 2x barlow lens but no matter what i use and combinate, the image is out of focus and blurry (im seeing black circle with like 4 strings I read somewhere that Im seeing secondary mirror). Any ideas what should I do?