Mmmm, it's a Chinese made Tasco. If it focuses mid travel the primary is in the correct place. They have just used a smaller secondary.
Some of these type scopes have a barlow lens on the focuser itself.
Sorry to say this but they are not of the highest quality.An f4.3 reflector needs quite a sizable secondary and would suffer light losses.
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Originally Posted by EdgesofTwilight
Dave yes it does focus around the midway point on focuser when I was observing Saturn.
Jacquie what you are saying make perfect sense to me. so for aligning this secondary mirror I should just try and centre it on the Primary mirror?
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