Astrophotography - mk3
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IC 434 - The Horsehead Nebula after stacking, alignment, and processing. This is a combination of natural light and hydrogen alpha filtered images.

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Date: 1/9/10, 1/10/10, 1/12/10, 1/21/10
Field center: RA: 05:40:47.436, DEC: -2:20:43.452
Field size: 2.51 x 1.67 degrees
Camera: Modified Canon 300D DSLR @ 1600 ISO
Filter: Astronomik CLS + 12nm Ha
Total time: 8 hours 46 minutes
Lens: 80mm Apo
F/stop: 6.1