Wednesday, April 9, 2014

NGC 6888 The Crescent Nebula Widefield



Last week for three early dawns, I forced myself out of bed to gather data for this image of NGC 6888, popularly known as the Crescent Nebula. I attempted to frame the image with emission nebulosity at the bottom to represent an open palm seemingly catching a falling object.  The intricate folds and filaments of the Crescent respond well to the H-alpha filter while the bluish shroud covering the nebula is highlighted by using an OIII narrowband filter.

Technical details: Exposures made with H-alpha filter of 90 minutes, OIII filter of 90 minutes using STF-8300M camera. Color exposures of 60 minutes using Canon 400D DSLR. Acquisition software: Nebulosity; Processed in IRIS; Post-processing in PS CS2. I had a challenging  time processing this image as it was my first time to deal with OIII combined with H-alpha data. All data taken at my place in Taguig City.

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