60-80 ft in diameter, disc shaped, flat on top, red and green lights underneath.

I was 18 at the time of the sighting.  I was staying alone at our summer home on Otis Reservoir. 
I was watching TV when the reception was lost and I looked out the picure window and saw it.  The disc was hovering over a small island directly across the cove from our cottage.  It was as big as the island about 60 - 80 ft., it was saucer shaped, flat on top and red and green lights underneath. 
I got on the phone to call for help, the call went through but the other party couldn't hear me above the static when I started to explain what I was looking at. 
After a few minutes it came directly over the house very slowly, and within a minute or so the TV reception came back.  
The following morning I heard on the radio that six were seen that night and it was on the front page of the local Winsted, CT, newspaper.
Date in 1977 is approximate.  Witness elects to remain totally anonymous.  PD