Zigzag

• by RegW

  Sorry if this is a novice question: This appears to be an asteroid, but it zigzags about, is this usual?

  Posted September 1, 2015 8:06 PM

• by AstroTinker in response to RegW's comment.

  Reg, It is a white #ffd - flat-field defect, basically dust or spot on the lens. They come in all shapes and sizes, may be white like a star, or more of a point, but most often are a black spot. The motion is due to camera motion between frames. Search for the tag #ffd in the discussion boards for more on the topic.

  Posted September 11, 2015 4:32 AM

• by billmccoy4447@gmail.com

  This helped me too. Thanks

  Posted September 24, 2015 2:40 PM