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NGC 7000, North America Nebula "Wall" Area, Hα, 22 June 2015, David Dearden

NGC 7000, North America Nebula "Wall" Area, Hα, 22 June 2015

Equipment

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Acquisition details

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Description

Night fell clear and with very little wind. Synched on Deneb and did a goto to the coordinates of my prior RGB image. Had to hunt around a bit to get things to match up. Also had a hard time focusing because none of the stars in my field of view were bright enough in Hα to easily focus. HαRRGB to follow.

Date: 22 Jun 2015

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

Scope: Astrotech AT8IN+Antares 0.5x focal reducer

Filter: Baader 7 nm Hα

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 23 °C)

Acquisition: Nebulosity 4.0.2, no dither

Exposure: 36x600 s

Stacking: Neb 4.0.2, bad pixel map, bias included, 33 flats, extract R, histogram match, square. N4 40-60% combine stack, Catmull-Rom resize 2x.

Processing: StarTools 1.3.5.289 Crop; Wipe: 75%; Develop: 79.57%; HDRptimize; Deconvolute 3.1 pix; Life:less is more; Track 4.5 pix; Magic, shrink 1 pix; Contrast. Photoshop CC 2014 + Carboni Astronomy Tools Astroframe.

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Histogram

NGC 7000, North America Nebula "Wall" Area, Hα, 22 June 2015, David Dearden