M97 the owl nebula
Sketch negative, 2000/4/24 22:30 EDT, with 8" Dobsonian, 25mm eyepiece, 1 degree FOV. Observed from Squirrel Hill, Pittsburgh. Extremely dim, large, no detail (cannot see the 'eyes' of the owl).
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All images by Jerry Xiaojin Zhu unless noted otherwise. Feel free to use them for your personal enjoyment. For other usage please contact the author at firstname.lastname@example.org