.965 to 1.25 Adapter Doesn't Work

[Ingo]

I haven't been on here in a few months due to a very far location across the United States, but I have picked astronomy back up here and might come back to share images and knowledge.

I have a little 60mm scope (I know, I have to upgrade ) from the early 90's. It has .965 eyepieces and a .965 focuser. So I bought a .965 focuser end diagonal to 1.25 eyepiece.

Needless to say, it doesn't focus in far enough for the diagonal to work.

So I need a way to get it to work!

Would sawing off the tube and then putting the objective lenses back on, make the focal point farther back in the focus range? If so, I will un-screw it, saw off an inch or so and screw it back on.

[scopemankit (Chris)]

Hi,

Before you cut, take the focuser off, take the diagonal off the focuser and with an eyepiece in the diagonal lay the telescope down on a board, hold the diagonal and see if you can focus on some item on the horizon. If you can, mark the diagonal position and the tube position and see how much you need to cut to fit in with the focuser racked in. You can add a couple of millimeters remembering that you can always rack out to compensate. Remember that the mark you have made will indicate the maximum inward position of the focuser.

Before you cut, consider which end you wish to cut taking into account possible loss of threads.

Take your time, think and good luck

Chris
Cape Town

[Ingo]

Originally Posted by scopemankit

Hi,

Before you cut, take the focuser off, take the diagonal off the focuser and with an eyepiece in the diagonal lay the telescope down on a board, hold the diagonal and see if you can focus on some item on the horizon. If you can, mark the diagonal position and the tube position and see how much you need to cut to fit in with the focuser racked in. You can add a couple of millimeters remembering that you can always rack out to compensate. Remember that the mark you have made will indicate the maximum inward position of the focuser.

Before you cut, consider which end you wish to cut taking into account possible loss of threads.

Take your time, think and good luck

Chris
Cape Town

Hmm, I don't get the first part. What do I do after I take the diagonal out? Where do I put it? If I take the plastic part off that holds the diagonal in, I can put the focuser in more, and that's where the focuser needs to be to obtain correct focus. Threads aren't a problem because everything is just screwed in through the tube.

I'm talking about cutting off a small amount of the actual telescope tube.

[tlgerdes (Trevor)]

Remember the golden rule....... measure twice, cut once.