The southern Milky Way from Vela (at right) to Centaurus (at left), with the False Cross at left, the trus Southern Cross at right of centre, and Alpha and Beta Centauri at left. The star cluster at lower right is NGC 2516. Omega Centauri is at upper left. The Coal Sack is left of the Southern Cross. This is a stack of 3 x 3 minute exposures at f/2.8 with the 35mm Canon L-series prime lens, and filter-modified Canon 5D Mark II at ISO 800, plus an exposure taken through the Kenko Softon filter for the star glows. Taken from Coonabarabran, NSW, Australia, April 2014.
A mosaic of the northern winter Milky Way and brilliant stars and constellations in and around Orion the Hunter. The Milky Way extends here from Perseus in the north to Canis Major in the south. Throughout the scene are numerous dark lanes and dust clouds such as the Taurus Dark Clouds at upper right. The Milky Way is dotted with numerous red “hydrogen-alpha” regions of emission nebulosity, such as the bright Rosette Nebula at lower left and the California Nebula at upper right. The curving arc of Barnard’s Loop surrounds the east side of Orion. Orion is below centre, with Sirius at lower left. Taurus is at upper right and Gemini at upper left. Auriga is at top and Perseus at upper right. I shot the segments for this on a very clear night on December 5, 2015 from the Quailway Cottage at Portal, Arizona. This is a mosaic of 8 segments, in two columns of 4 rows, with generous overlap. Each segment was made of 4 x 2.5-minute exposures stacked with mean combine stack mode to reduce noise, plus 2 x 2.5-minute exposures taken through the Kenko Softon filter layered in with Lighten belnd mode to add the star glows. Each segment was shot at f/2.8 with the original 35mm Canon L-series lens and the filter-modified (by Hutech) Canon 5D MkII at ISO 1600, riding on the iOptron Sky-Tracker. All stacking and stitching in Photoshop CC 2015. The soft diffusion filter helps bring out the star colors in this area of sky rich in brilliant giant stars.
A panorama of the Milky Way on a February winter night over the Badlands of Dinosaur Provincial Park, Alberta. The panorama extends from Canis Major low on the horizon to Perseus at top near the zenith. Orion is at right of centre, with Gemini to the left and Taurus and Auriga above Orion. Mars is the bright reddish object in Taurus aboce similarly coloured but dimmer Aldebaran, itself amid the Hyades star cluster. The blue Pleiades is at upper right. Sirius is the bright star at bottom. The image takes in the complete Winter Hexagon (aka the Winter Circle) of bright stars. The Milky Way is peppered with red nebulas, notably the large curving arc of Barnard's Loop, a suspected supernova remnant in Orion. The lowest stretches of the Loop get lost in the bright red airglow. The bright Orion Nebula shines in Orion's Sword, while east (left) of Orion is the round Rosette Nebula in Monoceros. At top is the finger-like California Nebula in Perseus. Several Messier star clusters also show up along the Milky Way. The cyan-tinted Comet C/2022 E3 (ZTF) is above centre amid the Taurus Dark Clouds. Bands of red and yellow-green airglow tint the sky toward the horizon, as well as the glows from distant towns, notably Medicine Hat at centre. Some light haze added natural star glows — I did not use a starglow diffusion filter this night. But I did shoot the sky segments though an URTH broadband light pollution reduction filter, to help make the nebulas pop out more. This is a stitch of 6 segments (using Adobe Camera Raw) for the sky with segments taken at 15° intervals, each 1 minute with the tracker motor on and at ISO 1600. The resulting sky panorama is blended with a stack of 4 untracked images for the ground, each 2 minutes at ISO 800, taken about 40 minutes after the sky segments, when the waning gibbous Moon was rising to light the landscape with a warm side lighting. So this is a time blend. But the camera was not moved between image sets. All were with the Canon RF28-70mm lens at f/2.8 and 28mm, on the filter-modified Canon R camera from AstroGear. This was on the Star Adventurer tracker with an Alyn Wallace V-plate to keep the camera level and aid framing the panorama. Orton glow effects added to the ground with Luminar Neo, and to the sky with Radiant Photo and f/64 Diffusion actions. Star spikes added with AstronomyTools actions.
