Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Filamentary nebula  ·  IC 1340  ·  Lace-work nebula  ·  NGC 6960  ·  NGC 6992  ·  NGC 6995  ·  Network nebula  ·  The star 52Cyg  ·  Veil nebula
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Cygnus Loop in OSH, David Lindemann
Cygnus Loop in OSH
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Cygnus Loop in OSH

Equipment

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Acquisition details

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Description

6 panels mosaic - NGC6960, NGC6974, NGC6979, NGC6992, NGC6995 and IC1340 - LRGB composition - OSH palette (Red = OIII, Green = SII, Blue = H-alpha)

71 raw H-alpha images of 10 minutes each unbinned

68 raw OIII images of 10 minutes each unbinned

72 raw SII images of 10 minutes each unbinned

35h10 total exposure from 07/29/2016, 07/30/2016, 08/03/2016, 08/04/2016, 08/06/2016, 08/07/2016, 08/08/2016, 08/12/2016, 08/13/2016, and 08/14/2016

A full resolution of 6025x5855 pixels for a total of 35 MPixels

FOV 3.5° x 3.4°

50 bias + 50 dark + 50 flats for calibration in CCDStack

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Takahashi FSQ106ED @f/5 530mm focal length with ONAG XT (http://www.innovationsforesight.com/), Apogee Alta U8300 monochrome @-30°C and Astrodon narrowband H-alpha 5nm, OIII 5nm, ans SII 5m, filters on 10micron GM2000 HPS II

Software: MaximDL to capture - SkySurveyor to calculate mosaic tiles and to automatically move the scope to the next tile coordinate - SharpLock to keep the optical train perfectly focused - CCDStack to calibrate, register, normalize, data reject and combine - Registar and PixInsight for mosaic assembly - Photoshop CC and PixInsight for non-linear streching.

Comments

Sky plot

Sky plot

Histogram

Cygnus Loop in OSH, David Lindemann