B143 – Barnard Dark Nebula in Aquila

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Astronomy, astrophotography, deep sky.

Contributor

Anthony Ayiomamitis

Home page

http://www.perseus.gr/Astro-DSO-Nebulae-Dark-B143.htm

Date/Time: Aug 13-14, 2009 (22:00 - 00:40 UT+3)
Loc: Athens, Greece (38.2997-deg N, 23.7430-deg E)
Equipment: AP 160 f/7.5 StarFire EDF, AP 1200GTO GEM, SBIG ST-10XME, SBIG CFW10, AstroDon TruBal CRGB.

Exposures: Lum 20 x 3 min, Red 5 x 6 min, Green: 05 x 6 min, Blue: 05 x 6 min, Dark: 15 x 3+6 min. Binning: 1x1 (Lum), 1x1 (RGB).

Processing: Reduction, multi-star registration/alignment, sum-combine (lum) and average-combine (RGB), colour balance for QE with adjustment for atmospheric extinction, DDP, background normalization, RGB combine, levels, saturation, levels with double luminance layering, curves, pixel repair, slight unsharp masking.

/ph

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