Smaller hole in telescope's cover



Hi, I am seriously new to the world of reflector telescope maned
astronomy.
I have one weird doubt that I just couldn't manage to find any answers
about that.

I just got my first reflector telescope! It's a 4" aperture,
equatorial, the point that made me really curious was the cover that
came along with the telescope.

Of course, a cover is to protect the telescope against dew and dust,
the thing is that the cover has one whole of about one inch and this
hole also comes with a cap! I wonder what is that whole for?

Am I supposed to use the telescope with that cap on but only with the
smaller whole opened?

Sorry if this Q is just too stupid, I couldn't help but just ask it!
My curiosity was killing me!

.



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