A mosaic of the Belt and Sword region of Orion the Hunter, revealing the diverse and colourful array of nebulas in the area, all a part of a vast star-formation complex. The Orion Nebula itself, Messier 42, is below centre, overexposed here. But also visible are the large red Barnard’s Loop, at left, and the blue Witchhead Nebula, IC 2118, at right, illuminated by the bright star Rigel. The Horsehead Nebula is visible below the left start of the Belt of Orion. Above it is the pinkish Flame Nebula, NGC 2024, and above it the bluish M78 reflection nebula complex. This is a 4-panel mosaic shot Jan 1, 2016 from home on a very clear night, though with some sky gradients. Each panel is a stack of 5 x 3-minute exposures at f/2.8 with the Canon L-Series 135mm lens, on the filter-modified Canon 5D MkII at ISO 1000. The camera was tracking but unguided on the AP Mach One mount. Orion was on the meridian but even so there was a lot of difference in sky brightness between panel segments. Also, trails from geostationary satellites appeared in each frame, as Orion was then near the opposition point, due south at midnight. I eliminated these with a Median combine stack mode for each panel segment. Plus from my latitude southern Orion tends to sit in brighter sky gradients, so the lower panels were brighter and more sky fogged than the upper panels. All stacking and stitching in Photoshop CC 2015.
A mosaic of the Sword and Belt region of Orion the Hunter, showing the diverse array of colourful nebulas in the area, including: curving Barnard’s Loop, the Horsehead Nebula below the left star of the Belt, Alnitak, and the Orion Nebula itself as the bright region in the Sword. Also in the field are numerous faint blue reflection nebulas. The reflection nebula M78 is at top embedded in a dark nebula, and the pinkish NGC 2024 or Flame Nebula is above Alnitak. The bright orange-red star at far right is W Orionis, a type M4 long-period variable star. This is a 4-panel mosaic with each panel made of 5 x 2.5-minute exposures with the 135mm Canon L-series telephoto wide open at f/2 and the filter-modified Canon 5D MkII at ISO 1250. The night was somewhat hazy which added natural glows on the stars. No filter was employed here. The camera was on the iOptron Sky-Tracker for tracking but no guiding. Shot from outside Quailway Cottage near Portal, Arizona, Dec 7, 2015. All stacking and stitching performed in Photoshop CC 2015. Stacking done with median combine stack mode to eliminate geosat trails through the fields.
The constellation of Orion photographed in deep red Hydrogen-Alpha light and rendered in monochrome. The filtered view brings out the very faint nebulosity in and around Orion, most invisible to the eye. The Belt of Orion is just below centre, with the region of the Horsehead Nebula below the left star of the Belt, Alnitak. Below it is the very bright Orion Nebula. Surrounding the left side of Orion is the arc of Barnard’s Loop, now thought to be a supernova remnant. The large circular nebula around Orion’s head is the Lambda Orionis Nebula or Sharpless 2-264. At left in Monoceros is the bright Rosette Nebula, NGC 2237, and above it the fainter nebulosity Sharpless 2-273 around the Cone Nebula. The small patch at top is Lower’s Nebula, Sharpless 2-261. Betelgeuse, at a record dim magnitude visually at this time, here looks more normal in brightness, at least brighter than Bellatrix at right, as seen here in red light, as Betelgeuse is a red giant star. I shot this using an Astronomik 12nm clip-in H-alpha filter on the Canon EOS Ra camera, a factory-modified red-sensitive mirrorless camera designed to pick up more of this deep red H-a nebulosity than can a normal camera. As the original image is simply deep red, it is best rendered as a monochrome image. However, this could be combined with colour images to make an enhanced full-colour image. This is a stack of 9 x 8-minute exposures at f/2.2 with the Sigma 50mm lens and Canon EOS Ra at ISO 1600, on the iOptron Sky Guider Pro tracker. Taken before moonrise on February 12, 2020. Stacked, registered and blended with Photoshop 2020. Nik Silver EFX selenium and Luminar Flex Soft Glow filters added for artistic effect, to add a soft blue glow to the image, not red. The temperature was about -15° C this night with a fine chill wind!
