Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  Double cluster  ·  NGC 869  ·  NGC 884
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NGC 869 & NGC 884, Double Cluster, 3-Panel Mosaic, 24 Oct 2014, David Dearden
NGC 869 & NGC 884, Double Cluster, 3-Panel Mosaic, 24 Oct 2014
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NGC 869 & NGC 884, Double Cluster, 3-Panel Mosaic, 24 Oct 2014

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Description

Just a warm-up target while waiting for M77 to rise. This also gave me a bit more practice with Astrotortilla's amazing capabilities. If my chiller was working, it sure wasn’t obvious. Running at 2.5 A, 16.5 °C. Got started and realized I could do a mosaic and get both components, so that's what I did. Guider performance was horrible again.

Date: 24 Oct 2014

Subject: NGC 869 & NGC 884, Double Cluster

Scope: AT8IN+Antares 0.5x focal reducer

Filter: Baader Fringe Killer

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

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 2.3.1 (Win 7 ASCOM)

Camera: DSI IIc chiller at 2.50 A, 16.5 °C

Acquisition: Nebulosity 3.2.1, no dither

Exposure: 27+32+26x60 s

Stacking: Neb 3, bad pixel map, bias included, no flats, normalize first, trans+rot align, 1.5 SD stack.

Processing: StarTools 1.3.5.289 Crop; Wipe:Color & brightness 100,80,100%; Develop 80%; HDRptimize; Color:Scientific, 300%; Life:Moderate; Track: 2.5 pix; Magic shrink 1 pix. Photoshop CC 2014 Astronomy Tools Photomerge; Increase star color; Healing brush; Astro Frame.

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NGC 869 & NGC 884, Double Cluster, 3-Panel Mosaic, 24 Oct 2014, David Dearden