Stationary Flashing Light in the night sky over Succor Creek St. Park.

A group of us were camping at succor creek state park in eastern Oregon.  We stayed up late to get some Milky Way photographers because it was a dark moonless night.  The Milky Way was brilliant!    After shooting a few photos I saw a flash in the night sky to the south. It was about 80 degrees altitude.   I usually pay attention to anything unusual in the sky. Typically, most lot these are caused by ‘iridium flashes ‘ of  satellites, however, to my surprise when the flash blinked again a few seconds later, it hasn’t moved from the position of the initial flash.  I alerted a friend to pay attention.  We continued to watch this supposed object to flash on  a very irregular intermittent pattern.  Interval being anywhere between 5 seconds to maybe 1 or 2 seconds.  I could tell this object had to be in space or very high in the atmosphere.    After realizing absolutely that this object was not moving And was completely stationary in the night sky  I yelled to wa! ke up my wife who was sleeping in the tent.
The Moment I did so, the flashing ceases completely.  I have seen a similar flash at horseshoe bend, Idaho that acted the same way and also ceased the moment inwent to alert more witness.  Coincidence? Maybe!   Anyhow, , I am a very avid outdoorsman and accustomed to the night sky and A good level of  astronomical  knowledge. After spending 40 years of being under the night sky I have become familiar with what is normal and what is unusual.  I practice healthy degree of skepticism to rule out any and all things conventional before jumping to conclusions.  This however was definitely unusual.  Therefore, I felt it was necessary to write this report.   It was not an iridium flash or a drone. Never saw any craft arrive or leave the scene of the event.   To me, this was certainly unidentified...