Second etalon

I have a 60mm tilt adjusted Lunt, single stack. The 60mm LS60FHa second etalon to screw onto the front is £3200 new to get it double stacked. If I got a second hand 60mm Lunt with pressure tuned etalon, could I take the pressure tuned etalon out of the second 60mm Lunt and insert it next to the tilt adjusted etalong in the original scope? Below is an image of a tilt adjusted 60mm Lunt, the middle image what I would get by sticking a second etalon on the front, and the lower image how I’m asking if it is possible to insert a pressure tuned ethalon in mid optical path. Thanks for any thoughts.

James

• This topic was modified 5 days, 6 hours ago by Dawson.
• This topic was modified 5 days, 5 hours ago by Dawson.