Depends on how much focus travel it has. I had that scope, although I swapped the focuser for one a little more robust than the original/factory one.
That being said, rather than getting just an extension tube, I think you'll be after some sort of field flattener as you'll find the stars in the corners look like seagulls. I'd recommend the Orion Field Flattener - cheap and does a good job in my opinion. You just need to tweak the spacing between the flattener and your camera's sensor. Might need a spacer in there - can vary depending on equipment combo - mine was about 30mm.
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