Contains: NGC 7082, NGC 7039, North America nebula, NGC 7000, Network nebula, NGC 6992, IC 1340, Pelican nebula, IC 5070, IC 5068, Veil nebula, Lace-work nebula, Filamentary nebula, NGC 6960, NGC 6940, gamma Cyg nebula, IC 1318, IC 1311, IC 4954, The star 32Cyg, The star ηCyg, The star τCyg, The star ξCyg, The star 31Cyg, The star ζCyg, The star δCyg, The star Gienah (εCyg), The star Sadr (γCyg), The star Deneb (αCyg), Part of the constellation Cygnus (Cyg)

Image of the day 11/28/2017

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Cygnus Region – Super-Wide-Field Mosaic

Technical card

Imaging telescope or lens: Samyang 135mm f/2

Imaging camera: Atik 460EX mono

Mount: SkyWatcher NEQ3

Guiding telescope or lens: QHYCCD miniGuideScope

Guiding camera: Astrolumina QHY5L-II m

Software: PixInsightMain Sequence Software SequenceGeneratorProPHD2 Guiding

Filter: Baader Ha 3.5nm

Resolution: 5109x5298

Dates: Oct. 21, 2017

Frames: 420x300"

Integration: 35.0 hours

Avg. Moon age: 1.61 days

Avg. Moon phase: 2.91% job: 1820066

RA center: 308.481 degrees

DEC center: 38.570 degrees

Pixel scale: 14.423 arcsec/pixel

Orientation: 355.784 degrees

Field radius: 14.742 degrees

Locations: My Backyard, Langen, Hessen, Germany


This is a major part of the constellation Cygnus, including Deneb and Sadr as main stars, covering a field of about 20 by 20 degrees. This image focusses on the rich H-alpha nebulosity in this region. In contains some of the famous emission nebulae, e.g. the North America Nebula, the Pelican Nebula, the Crescent Nebula, and the Veil Complex. However, what I find even more exciting is the sheer mass of nebulosity that covers the whole field with dramatic ripples and dark lanes. Make sure to zoom in as far as you can to really see the amazing detail in this image.

This is a 5 x 7 mosaic (35 panels) obtained with the Samyang 135mm lens and the ATIK 460ex camera using the 3.5nm Baader H-alpha filter. Nine panels were from an earlier imaging run, the rest was taken from the light-polluted skies of my backyard.

Processing was rather easy, thanks to the MosaicByCoordinates and GradientMergeMosaic tools of PixInsight. The file at full resolution – more than 100 mega-pixels – is getting a bit large, so this a 50% resampled version. In addition there is an annotated version B, including all the Sharpless, NGC, and IC objects in this region.






with full annotation including Sharpless Catalog

Sky plot

Sky plot


Cygnus Region – Super-Wide-Field Mosaic,