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Message: <blockquote data-quote="blackstar" data-source="post: 743258" data-attributes="member: 47518">Cindy, I have been pondering about your mysterious perception of the large stars in my MW photos. Here are the possible cracks on that matter:(1) Shutter speed too slow causing star trailing effect,(2) Moisture in air producing optical refraction causing light (from stars) spread wide spectrum of color and space (size). There was a medium rain shower that late afternoon after sunset. Until the late-night, the sky cleared up and I had a naked-eye sighting of the dark clear sparkling sky full of twinkling stars, which I couldn't make in my camera preview and review. However, unaware of the moisture in the air at the moment (if true),(3) (probably the most plausible explanation) The geological factor: the site is at 9500 ft elevation and the shooting distance may well reflect the size of objects in images. At first, 10000 ft may seem like nothing if objects are far at infinity. Truth may claim a difference. The following pictures could verify this issue a little, if not completely: #3 is the same #3 as this thread starts, #4 and #5 were taken two nights after at a different site that is at least 2000 ft lower: (#5 was aimed to a different galaxy farther away) Are they showing stars in different sizes?  Your judge.#3[ATTACH]345447[/ATTACH]#4[ATTACH]345448[/ATTACH]#5[ATTACH]345449[/ATTACH]</blockquote>