Round silver object seen only through binoculars that remained stationary for over 30 minutes.While my wife and I were hunting approximatley 6 miles north of Columbine, Colorado which is about 30 miles north of Steamboat Springs, we saw a round silver object in the sky that remained in one place for over 30 minutes. I took a compass reading on it and it was at 135 degrees from north in the southeastern sky approximately 30 degrees off the horizon. This object could not be seen with the naked eye. I was looking through my binoculars at an eagle when I noticed the object. The sky was very blue and clear and there was definitely something in the sky. I handed the binoculars over to my wife and I gave her the approximate direction in the sky. It took her a minute or two, but she also saw it. She thought it looked like a baloon, but this object did not move for over 30 minutes. We continued to view this object at 3 to 5 minute intervals and it did not move. Since it was low on the horizon, I was able to use a tree as a reference point to mark it location. Several high flying jets flew near this objects, but the jets appeared to be much lower than this object based upon the jet wash trails. After 40 minutes, we could not find the object again in the same portion of the sky. We scanned the area for several minutes.