A raw picture with the red filter of LDN 673. The picture is monochromatic and on the top of the dark nebulae and star field there are two lines: one, on the bottom left, that clearly corresponds to a sattelite passing by; the second, going all the way from the top to the bottom, is not a continuous line, like a "normal" satellite trail, but is a dotted line, which is kind of awkward.