Dates: July 25, 2017
Integration: 9.0 hours
Avg. Moon age: 1.77 days
Avg. Moon phase: 3.51%
Astrometry.net job: 1686169
RA center: 308.596 degrees
DEC center: 42.101 degrees
Pixel scale: 7.236 arcsec/pixel
Orientation: -178.796 degrees
Field radius: 8.385 degrees
Locations: Mallorca, Son Macia, Mallorca, Spain
This is the central part of the constellation Cygnus, including Deneb and Sadr as main stars, covering a field of about 13 by 10 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, and the Crescent Nebula. However, what I find even more exciting is the sheer mass of nebulosity that covers the whole fields with dramatic ripples and dark lanes.
This is the first light for my new "enforced H-alpha" filter from Baader with a width of 3.5nm, works extremely well with the Samyang 135mm lens and the ATIK 460ex camera - no halos and very clean subs. At the same time it is my first attempt at an larger wide-field mosaic. This image is a 3 x 3 mosaic composed in Pixinsight using the MosaicByCoordinantes and GradientMergeMosaic tools. I was a bit worried about combining this mosaic, but it turned out to be really straight-forward. Apart from this I only used MureDenoise, LocalHistogramEqualization and simple HistogramTransformations - no masks or star magic involved.
Make sure to zoom into this image as far as you can...
If this image is the result of your processing of a public data pool, you can send it the pool so it's displayed there.
Use this form to select an existing public data pool.
If this image is the result of your processing of a private shared folder, you can send it the folder so it's displayed there.
Such limitation improves the website as a whole by discouraging people from creating fake accounts to like their own images. Thank you for understanding!
Currently, your AstroBin index is 0.00.