The "Wall", NGC 7000, North America Nebula, OSC RGB, 17 June 2015 (David Dearden)

The "Wall", NGC 7000, North America Nebula, OSC RGB, 17 June 2015

After a few clouds early, conditions were quite good aside from being quite warm (CCD at 25 °C). This is another target I framed in Astroplanner then acquired by synching on a star (Deneb) and doing a goto to the desired coordinates. Again, I intend to add Hα to this image later. Astrobin user Patrick Gilliland showed me how to use the liquify/pucker tool in Photoshop to debloat the bright stars a bit, and I have used that technique on this image; I think it helps.

Date: 17 Jun 2015

Subject: “Wall” region of NGC 7000, North America Nebula

Scope: Astrotech AT8IN+Antares 0.5x focal reducer

Filter: Baader Fringe Killer

Mount: CG-5 (Synta motors, PicGoto Simplificado)

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 2.5.0 (Win 7 ASCOM)

Camera: DSI IIc no cooling (about 20 °C)

Acquisition: Nebulosity 4.0.2, no dither

Exposure: 60x300 s

Stacking: Neb 4.0.2, bad pixel map, bias included, 33 flats, histogram match, deBayer & square. DSS 2x drizzle, 1.5σ κ-σ stack.

Processing: StarTools 1.3.5.289 Crop; Wipe: 84%; Develop: 70.16%; HDR

ptimize; Color:Scientific 250%, cap green to yellow, green bias reduce 1.05; Deconvolute 4.5 pix; Life:moderate; Track 6.6 pix; Magic, shrink 1 pix. Photoshop CC 2014 + Carboni Astronomy Tools Deep space nr; Increase star color; Liquify/pucker on large stars; Astroframe.

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Status	Basic failed
Started	...
Astrometry.net job	671891
PixInsight job	n/a
PixInsight queue size	n/a
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