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Deep H alpha image of the Butterfly Nebula - 6 hours of 30 minute sub-frames
Filter: Badeer Ha narrowband filter
Optics: William Optics flt110 at F5.2
Camera: Starlightxpress SXVFH16
Guiding: Lodestar and off axis guider
Mount: AP900gto3
Acquisition: CCDautopilot v5, The Sky 6 and Maxim DL5
Processing: Aligned and stacked in Maxim DL5, post processing in PixInsight and Photoshop CS3.
All images copyright NJHodges