identify movie scene with telescope

[TonyT]

Please help me to identify a movie, probably from the early 90s, or earlier.

The only scene I know is a voyeuristic one:

An elegant girl is using a large telescope on a tripod to observe group sex (1 man and 4 women I believe) in another building. Whenever those group actions are shown, the film has a round picture (to simulate the view through the telescope).

While the elegant girl is watching the action in the other building, standing behind the telescope, a guy starts to have sex with her at the same time.

Wow, I'd be impressed if anyone can come up with a hint.

[Walter Burns]

Except for the group sex, this sounds like Awakening, with Samantha Strong as the "elegant girl" using the telescope.

[alec]

Or it could be Secrets with Zara Whites at the telescope.

[TonyT]

Thanks Walter & alec,

you guys are awesome. "Secrets" proved to be correct.