Thread: very easy astronomy question

On behalf of my wife, just wondered what a barlow lense is, is it actually another lense in conjuction with the viewing lense or is it just a spacer for the viewing lense

Neither of us have seen one and assume its another lense

Any astronomers out there who know?

Thanks in advance :-D

It is an extra lens that attaches twixt the eyepiecs and scope. It usually has a magnification factot of 1.5 to 3. So if your scope is set at mag=120 a times 2 barlow will make it 240. ok?

Originally Posted by Megabrain

It is an extra lens that attaches twixt the eyepiecs and scope. It usually has a magnification factot of 1.5 to 3. So if your scope is set at mag=120 a times 2 barlow will make it 240. ok?

Thanks megabrain, i haven't seen one yet so wasn't sure what to expect but every astronomer ive spoken to says you gotta get one

Thanks again