I was attempting my first mosaic of M42 with my ST5 camera from SBIG. On the last two frames, in the upper right, I caught an obect passing through the FOV. The FOV for an ST5 at 750 mm FL is about 14' across (correct me if I'm wrong). The object only moves roughly 10.5' in 20 seconds. In the image is the distance it travled in 40 seconds. I'm sure a sattelite or a plain would move through the FOV in far less than 40 seconds. I'm calling it an asteroid unless someone can tell me what else it might be. Thanks
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