Spiritual Meaning:
Interestingly enough, a telescope in spiritual terms can signify the art of clairvoyance – the ability to perceive the future from an immediate perspective.

Psychological / Emotional Perspective:
Using a telescope in a dream may mean that we should look at things with both a long- and short-term view. Without taking account of a longterm view, we may not be able to succeed in the short term. Conversely, by looking at the long-term view, we may be given information which will help us to ‘navigate’our lives in the here and now.

Everyday Material Aspects:
Using a telescope in a dream suggests taking a closer look at something. A telescope enhances our view and makes it bigger and wider. We do need to make sure, however, that we are not taking a one-sided view of things.

You might like to consult the entry for Lens.