Cygnus and Lyra, in a stack of 5 x 4 minute exposures with the Canon 5D MkII at ISO 800 and 50mm Sigma lens at f/3.2. Plus two exposures taken thru the Kenko Softon filter for the star glows. Takes in the North America Nebula at top left and Gamma Cygni nebulosity left of centre. The Cygnus Starcloud is at centre. The Veil Nebula is at lower left. Deneb is at upper left, Vega at upper right. The Kepler field is at top, the area surveyed by the NASA Kepler exoplanet search satellite. Taken from home Sept, 29, 2013.
Taken from Sask Summer Star Party in Cypress Hills, Saskatchewan, Aug 6, 2005. Taken with Pentax 6x7 camera with 90 lens at f/3.5, for 36 minute exposure on Ektachrome E200 slide film, 120-format. Tracked but not guided. Aurelon anti-vignetting filter and Noise Ninja applied.
This is a framing of the rich complex of nebulosity in and around the constellation of Cygnus, in a blend of "white light" images and images shot through a deep red hydrogen-alpha filter that isolates the red emission line from the gas clouds, bringing them out in much more detail than is otherwise possible. The North America Nebula (NGC 7000) and adjacent Pelican Nebula (IC 5070) are at upper left beside blue Deneb. The Veil Nebula, a supernova remnant, and catalogued as NGC 6995 and NGC 6960 for the main arcs, is at lower left. The Gamma Cygni complex, IC 1318, is at centre. However, the field is littered with other faint arcs and patches of emission nebulosity. The dark area below Deneb is the Northern Coal Sack. The bright area at lower right in the Milky Way is the Cygnus Starcloud, a region less obscured by dark interstellar dust. The "beak" star of Cygnus, Albireo, is at lower right, so the framing takes in most of Cygnus and all of the Northern Cross asterism. This is a blend of: a stack of 20 x 5-minute exposures at f/2 and ISO 3200 with the Canon Ra equipped with a clip-in Asrtronomik 12nm H-alpha filter, plus a stack of 25 x 2-minute exposures at f/2.8 and ISO 1600, with the latter shot through a front-mounted URTH broadband filter to help block skyglow and gradients. All with the Canon RF 28-70mm lens at 70mm and on the Star Adventurer tracker for tracked but unguided shots taken from home October 1, 2022 on a very clear and mild night for a total of 150 minutes of exposure. The initial H-alpha shots were taken with the waxing crecent Moon still up. All stacking, alignment and blending in Photoshop. Luminosity masks applied with Lumenzia. The H-alpha stack was layered in with a Screen blend mode and with its own adjustment layers and masks, and colorized with a Hue-Saturation layer. The H-alpha data was not added by replacing the red channel, as that provides no control of the blend of the H-alpha image. A mild and masked Orton Glow effect added with Luminar AI.
