13899227 - Cassiopeia and the northern stars over Red Rock Canyon in Waterton Lakes National Park, Alberta, with illumination from a waxing gibbous Moon. This is a composite of three 30-second exposures for the ground to smooth noise and one 30-second exposure for the sky, all with the 24mm lens at f/3.5 and Canon 6D at ISO 1600.13899191 - A rainbow near sunset from hom in Alberta, May 31, 2014, taken with the 14mm Rokinon ultra wide angle lens. A fainter outer bow is also visible.13899107 - Messier 51, the Whirlpool Galaxy, the classic face-on spiral galaxy in Canes Venatici in the northern spring sky.13899105 - A moonlit scene at Turret Arch in Arches National Park, Utah, with Sirius shining through the Arch, Procyon above the Arch, and above it at top centre, Jupiter, near the Beehive star cluster. The stars of Gemini are right of Jupiter. The rising waning gibbous Moon provides the illumination.13899076 - Comet Lovejoy, C/2014 Q2 amid the clusters, nebulas and dark dust clouds of Taurus and Perseus, on Friday, January 16, 2016. Its long blue ion tail stretches back at least 15°, almost to the open cluster NGC 1647 on Taurus at the left edge. At centre is the Pleiades star cluster, M45; at top right is the red California Nebula, NGC 1499, in Perseus, while the field is filled with the dark dusty lanes of the Taurus Dark Clouds. At left is the red giant star Aldebaran amid the V-shaped Hyades star cluster.13899054 - A panorama of Lake Edith in Jasper National Park, Alberta, on a calm autumn night, looking north to the stars of Ursa Major, the Great Bear, and the Big Dipper in deep twilight. Arcturus is at far left setting in the northwest over Pyramid Mountain, while Capella in Auriga and the stars of Perseus are rising at right in the northeast. This was on a mid-October night when the Big Dipper rides low in the northern sky from this latitude of 53° N.13899013 - The Tarantula Nebula area, NGC 2070, of the Large Magellanic CLoud, LMC. Numerous other nebulas and clusters in this field! This is a stack of 5 x 12 minute exposures at ISO 640 with the Canon 5D MkII and 105mm Astro-Physics Traveler at f/5.6 with 6x7 field flattener. Shot December 10, 2012 from Timor Cottage at Coonabarabran, Australia13898992 - The northern circumpolar sky with the Big Dipper at right rising, and Deneb in Cygnus and Vega in Lyra at left settting, over the moonlit badland hills of Dinosaur Provincial Park, Alberta, on November 27, 2017. The Dipper points up to Polaris and the Little Dipper. The Moon was a day past first quarter. Polaris and the Little Dipper are at centre, so this is looking north to the circumpolar sky.13898957 - Big Dipper stars and Old Faithful geyser, Yellowstone National Park, Wyoming.13898936 - An ice crystal halo around the Full Moon on solstice eve, June 19, 2016, from Driftwood Beach at Waterton Lakes National Park, Alberta. Mars is the bright object at far right, Saturn is just right of the Moon. The iconic Prince of Wales Hotel is below Mars.13898921 - Gum Nebula area of Vela and Puppis. Taken from Atacama Lodge, Chile, March 19, 2010, with modified Canon 5D MkII and Sigma 50mm lens at f/4, for stack of 10 x 6 minute exposures (Mean combined) at ISO 800 plus 2 x 6 minutes with Kenko Softon filter. High contrast boost and Selective Colour adjustments to bring out nebulocity while retaining neutral sky.13898911 - Scorpius rising over a telescope and observers at the annual OzSky Star Party in Coonabarabran, NSW, Australia on April 5, 2016. Mars is the bright reddish object outshining Antares and to the left of Antares. Saturn is below Mars above the trees.13898874 - Moonrise 1 day before Full Moon, over Vermilion Lakes in Banff, Alberta. Moon rising between Mt Rundle and Sulphur Mountain. 16-35mm Zoom at 18mm with Canon 7D. Part of a 700-frame time-lapse sequence.13898860 - The summer Milky Way overhead and through the Summer Triangle stars in July, looking up through trees in Banff National Park at Herbert Lake. Deneb is at top left, Vega at top right, and Altair is at bottom. The bright Cygnus star cloud is obvious. As are the dark lanes in the Milky Way.13898851 - Taken from Morant's Curve on Bow Valley Parkway in Banff National Park near Lake Louise, Alberta. Lone dot of light on distant mountain must be from Lake Agnes Tea House on Little Beehive Peak above Lake Louise.13898761 - Bright -6 magnitude Iridium flare, June 21, 2010, at 12:28 am MDT, moving from south to north. Camera on tripod exposure for 40s at f/4 with 24mm lens, and Canon 5D MkII camera at ISO 1000. Star below Iridium is Acrturus.13898743 - The Milky Way over the sandstone hoodoos of Writing-on-Stone Provincial Park in southern Alberta.13898738 - A mosaic of the region in Cassiopeia and Cepheus containing the main nebulas: the Bubble Nebula (NGC 7635) at lower left, and the Cave Nebula (Sh 2-155) at upper right. At left is also the bright Messier open cluster M52. The small yellowish cluster at right is NGC 7419. The small cluster at lower centre is NGC 7510. The small nebula just left of centre is NGC 7538.13898717 - An aurora over the snowy boreal forest trees at the Chruchill Northern Studies Centre, Churchill, Manitoba, March 3, 2016. The display started the night quite impressively but then faded and subsided. This is a 10-second exposure a f/2 and ISO 3200 with the Nikon D750 and Sigma 20mm Art lens.13898689 - The centre of the Galaxy area in Sagittarius and Scorpius rising in the east, from Australia, on March 30/31, 2014. All of Scorpius is visible as well as Norma, Ara, Lupus and most of Sagittarius.13898648 - Total eclipse of the Moon, December 20/21, 2010, taken from home with 130mm AP apo refractor at f/6 and Canon 7D at ISO 400. An HDR composite of 9 images from 1/125 second to 2 seconds, composited in Photoshop CS5. Vibrancy increased to show bring out the colour variations across the shadow and at the edge of the shadow. Taken at about 12:21 am MST on Dec 21, about 20 minutes before totality began, during the partial phase.13898633 - A panorama of an arc of noctilucent clouds over a ripening field of yellow canola, on July 14, 2022 from southern Alberta near Hussar. This was about 11:20 pm MDT with the NLCs near their peak. They reached a little higher when they first appeared a few minutes earlier in the brighter sky, but capturing them is always a balance between getting them at their maximum height vs. the darkness of the sky background to make the fainter structures stand out. The foreground is illuminated mostly by twilight, and I have brightened it to bring out the canola colours and the colour contrast between earth13898627 - The northern summer Milky Way rising into the east. Taken from the Painted Pony Resort, New Mexico, March 10, 2013. This is a stack of 10 x 5 minute tracked exposures with the Samyang 14mm lens at f/2.8 and Canon 5D MkII at ISO 800. Used iOptron SkyTracker. Ground is from two exposures.13898578 - The Full Moon at the equinox, on March 20, 2019, reaching full phase only fours hours after the moment of the vernal equinox, and here captured rising very shortly before the moment of the Full Moon. I shot this while the Moon was still rising and in a deep blue sky, and tinted yellow from atmospheric absorption. Even so, this is a blend of short (for the Moon) and long (for the sky) exposures to capture the dynamic range.13898575 - A 300° panorama of an aurora from the Churchill Northern Studies Centre, in Churchill, Manitoba on February 26, 2022. This aurora was at Kp1 level (very low) and appeared only as featureless grey arcs to the eye. But the camera picked up unusual red colouration, and even some yellow-oranges, along with the more normal greens. The reds are odd for such a low-level aurora as the oxygen reds typically appear only when the aurora gets very active and energetic. The display did brighten more later this night when it took on the more classic green arcs, with occasional lower fringes of nitrogen pink13898569 - Venus above the Pleiades star cluster, M45, on April 4, 2020, in the twilight and moonlight. Light from the gibbous Moon illuminated the sky, so no long exposure would reveal much detail in and around the Pleiades. Venus passes close to the Pleiades only every 8 years. It was closer the night before, but alas, there were clouds! Some light cloud this night added the glow.13898543 - A scene with a fairly high-altitude Sun and prominent and colourful sundogs (parhelia) flanking the Sun and well outside the 22° halo which is only faintly visiible. Sundogs are always well outside the 22° halo when the Sun is higher in the sky — the Sun's altitude at this time at 4 pm MDT on April 25, 2022 was 41°.13898535 - The constellation of Ursa Major, the Great Bear, and the asterism of the Big Dipper low in the north over Lake Edith in Jasper National Park, on a clear autumn night. Arcturus is at left setting over Pyramid Mountain.13898512 - A telescopic closeup of Comet Lovejoy (C/2014 Q2) on January 19, 2015. I shot this from near Silver City, New Mexico, using a TMB 92mm apo refractor at f/4.4 and using a Canon 6D at ISO 1600 for a stack of 4 x 5 minute exposures. The ion tail is primarily from a single exposure to minimize blurring from the comet’s motion relative to the stars. The rest of the image is from the stacked combination to minimize noise.13898509 - A low rainbow over the Atlantic Ocean just prior to the total eclipse of the Sun, Nov 3, 2013, from at sea on the Star Flyer sailing ship. This was about 20 minutes before second contact so the sunlight was from a narrow slit of a Sun.13898487 - The setting Sun at the Twelve Apostles sea stacks and cliffs on the Great Ocean Road, on April 12, 2017.13898479 - The Northern Lights in an arc across the northern sky over the Cameron River, downriver from the Ramparts Falls. This was September 8, 2019 with the trees turning in their fall colours. The Big Dipper at top centre.13898436 - An arc of a Kp-5 aurora over a wheatfield from home in southern Alberta. The panorama takes in the northern stars, from the Big Dipper and Ursa Major at left, to the W of Cassiopeia at top right of centre, with Perseus below Cassiopeia, and Andromeda and Pegasus at right. Moonlight from the waxing gibbous Moon low in the southwest illuminates the scene. Jupiter is rising at far right low in the southeast. This was taken when the display was at its most active. An hour later as it was fading STEVE appeared in a fabulous show.13898425 - The rising of the Full "Hunter's Moon" of October 9, 2022, with the Moon reflected in the calm waters this night at Crawling Lake Reservoir in southern Alberta. The Moon appeared very pink as it rose into the clear sky near the horizon.13898423 - The region of nebulosity on the Cepheus-Cassiopeia border with NGC 7822 (top) and Ced 214 (bottom). This is a stack of 15 x 7 minute exposures at f/4.4 with the 92mm apo refractor and filter-modified Canon 5D Mark II at ISO 800. Taken from New Mexico. Focus is a little soft.13898393 - The 2-day-old crescent Moon with Earthshine, set in the stars and deep blue of twilight, on November 24, 2014. Taken from near Silver City, New Mexico with the TMB 92mm refractor at f/5.5 and Canon 6D at ISO 100. The stars are trailed slightly because the telescope was following the Moon at the lunar tracking rate.13898365 - A framing of the Milky Way in Sagitta and Vulpecula below Cygnus. The stars of Sagitta the Arrow are at lower left. The distinctive asterism, the Coathanger, is at lower right embedded in the dark lanes of the Milky Way. It is also called Collinder 399 and Brocchi's Cluster. The green Dumbbell Nebula, M27, is just left of centre. The star Albireo is at top. Faint nebulosity inhabits the area, such as NGC 6820 left of the Coathanger, but as this was shot with an unmodified camera the red nebulas don't show up well here.13898332 - The centre of the galaxy area of the Milky Way toward Sagittarius and Scorpius, with the Sagittarius Starcloud right of centre, and the Lagoon Nebula (M8) left of centre. The Cat's Paw Nebula (NGC 6334) in Scorpius is at upper right, the Swan Nebula (M17) and Eagle Nebula (M16) are at lower left. To the right of them is the Small Sagittarius Starcloud (M24). At the very top is the Snake Nebula (B72). The main mass of dark nebula is the Pipe Nebula (B78). Above M24 at left is the open cluster M23 while below the M24 star cloud is the cluster M25. The globular M22 is at the bottom edge. At right13898328 - A couple who were participants in the Learning Vacations program at the Churchill Northern Studies Centre watches the aurora display on the final night of the program, March 18, 2020, and the last night of the Churchill aurora tourist season for 2020. Arcturus is the bright star at right in the northeast.13898326 - The Full Moon rising on December 22, 2018, the day after the winter solstice, in a perfectly clear sky and over the distant horizon to the northeast over the snow-covered prairie. Some cows are grazing at left! The top edge of the Moon has a green rim and the bottom edge a red rim, from atmospheric refraction. But it made for a Christmas-coloured Moon ornament on the horizon! The dark lunar mare and even the bright rays splashing from Tycho at bottom are visible.13898229 - The Celestron GPS8 scope looking at M22 in the Milky Way in the light of the rising waxing gibbous Moon, from the backyard July 21, 2019. Jupiter is bright at right, Saturn at left.13898188 - The summer constellations of Sagittarius and Scorpius skimming low across the south from my latitude of 51° N, above the trees from my backyard site in rural Alberta.13898171 - The northern autumn constellations of Pegasus (partially seen at right), Andromeda (across the centre), Perseus (at lower left) and Cassiopeia (at upper left) rising over moonlit formations at Dinosaur Provincial Park, Alberta. Illumination is from the waxing gibbous Moon, setting in the southwest so it is providing a warm "bronze-hour" light. The Andromeda Galaxy, M31, is at centre. The star clusters NGC 752, M34 and the Double Cluster are at left, as well as the Perseus OB Association of stars. Some of the small star clusters in Cassiopeia are resolved as well.13898166 - The 1910 Liberty Schoolhouse, a classic pioneer one-room school, on the Alberta prairie under the stars on a spring night, with an aurora dancing to the north. Moonlight provides the illumination. Cassiopeia is above the school. Polaris is at top.13898156 - Emission nebulas in northern and central Cygnus, including the North America Nebula (NGC 7000) at lower left and the Gamma Cygni complex (IC 1318) at upper right. Deneb is the bright star at left, while Gamma Cygni itself is at upper right.13898085 - Jupiter (bright at left in Pisces) and Saturn (dimmer at right in Capricornus) low in the southeast sky on a mid-September evening in 2022. Jupiter was then nearing its opposition, and a close one at that in 2022, appearing brighter than it usually does at opposition. Jupiter appears below the Square of Pegasus at upper left. This was from home in southern Alberta at latitude 51° N.13898079 - A dim aurora from the Churchill Northern Studies Centre, in Churchill, Manitoba on February 26, 2022. This aurora was at Kp1 level (very low) and appeared only as featureless grey arcs to the eye. But the camera picked up unusual red colouration, and even some yellow-oranges, along with the more normal greens. The reds are odd for such a low-level aurora as the oxygen reds typically appear only when the aurora gets very active and energetic. The display did brighten later this night when it took on the more classic green arcs, with occasional lower fringes of nitrogen pinks. But at the start o13898071 - Mars, Venus and Jupiter (in that order from top to bottom) in a triangle, in conjunction, at an old farmstead near Vulcan, Alberta, in the morning twilight, October 28, 2015. Illumination is from the nearly Full Hunter’s Moon in the west. The trio of planets were in Leo in a fine conjunction not to be repeated until November 21, 2111. Almost all of Leo is visible here, with Regulus, the constellation’s brightest star, just to the right of the windmill blades at top.13898068 - The centre of the Galaxy region in Sagittarius and Scorpius overhead in the wee hours of an April morning in Australia. At upper right are Alpha and Beta Centauri, while at lower left is Altair.13898044 - A portrait of the constellation of Orion taken in monochrome in the deep red light of the hydrogen-alpha wavelength using a narrowband filter, to emphasize the vast clouds of interstellar gas within and around Orion.13898038 - Sagittarius and Scorpius in diagonal framing, with Milky Way from Ara to Serpens. Taken with 50mm Sigma lens at f/4 and Canon 5D MkII at ISO 800 for stack of just 2 frames each at 6 minutes. Cloud prevented more exposures. Taken from Atacama Lodge, San Pedro de Atacama, Chile.13898007 - Waning Moon series, Aug 2005. Canon 20Da, with Astro-Physics 5-inch refractor and 2x barlow at f/12. Taken from RAW frames, plus Noise Ninja applied.13897998 - The Belt of Orion with the Horsehead Nebula at botton, the dark nebula set in the bright emission nebula IC 434. The nebula at left of the Zeta Orionis (aka Alnitak) is the Flame Nebula, NGC 2024. The reflection nebula at upper left is the M78 complex with NGC 2071. The other Belt stars are Alnilan (centre) and Mintaka (upper right). The field contains a wealth of other blue reflection and red emission nebulas.13897983 - Sunset at Herbert Lake, Banff National Park, Alberta, with the last sunlight illuminating the peaks around Lake Louise on the Continental Divide, in a show of “alpenglow.” The main peak at left is Mount Temple.13897965 - The Milky Way over Upper Waterton Lake, Waterton Lakes National Park, Alberta, on August 29, 2013. This is a US World Heritage Site. Taken with the 14mm lens and Canon 5D MkII for 60 seconds at ISO 3200 and f/2.8. Light from town streetlights provides the illumination. The Moon was not up. It was a very windy night!13897910 - This is Comet NEOWISE (C/2020 F3) over the Horseshoe Canyon formation near Drumheller, Alberta on the night iof July 10-11, 2020, taken about 2 a.m. MDT with the comet just past lower culmination with it circumpolar at this time. Warm light from the rising waning gibbous Moon provides the illumination. The comet’s faint blue ion tail is just barely visible even in the moonlit sky and low altitude. The glow of summer perpetual twilight at latitude 51.5° N still colours the northern horizon despite this being close to the middle of the night.13897849 - Cassiopeia and the northern stars over Red Rock Canyon at Waterton Lakes National Park, Alberta, in June 2015. The scene is illuminated by the waxing gibbous Moon. This is a single 30-second exposure at f/5 with the 24mm lens and Canon 6D at ISO 3200.13897758 - A band of subtly coloured aurora over the snowy trees of the northern boreal forest, Churchill, Manitoba. This was Feb 9/10, 2019. Cassiopeia is at left. This is looking north.13897737 - The Dark Emu of aboriginal sky lore rising out of the Tasman Sea, from the south cost of Victoria, Australia. From Cape Conran on the Gippsland Coast. Carina is just above centre, Crux, the Southern Cross is at centre, and Centaurus is below Crux. The False Cross is at top.13897728 - Comet NEOWISE (C/2020 F3) over the still waters this night of Crawling Lake in southern Alberta. The Big Dipper is at top. Even in this short exposure, the two tails — dust and ion — are visible. This was July 20, 2020. The blue ion tail is extending up into the Bowl of the Big Dipper, for some 20° in length. Very impressive!13897719 - The constellation of Andromeda with the famous Andromeda Galaxy (Messier 31) rising on an early summer night at Dinosaur Provincial Park, Alberta. This was June 30, 2022.13897700 - Scorpius in the pre-dawn sky, March 15, 2013, from the Painted Pony Resort, New Mexico. This is a stack of 5 x 3 minute exposures at f/2.8 with the 35mm lens and Canon 5D MkII at ISO 1600, with the ground from one image, plus a stack of 2 exposures through the Kenko Softon filter for the star glows.13897656 - The 13.7-day-old Moon (a day before Full) with the south polar region tipped toward us in a favourable libration for viewing the southern regions and features. This was April 6, 2020. The large crater, Bailly, is on the southern limb, better seen here than at most similar phases, due to the favourable southern libration.13897557 - A bright green auroral arc with prominent red curtains, to the east in front of the winter stars rising. with bright Mars below centre and the Pleiades at top right. This was from home in Alberta on September 26, 2022.13897553 - The partial eclipse of the Sun, October 23, 2014, as seen from Jasper, Alberta, in this case shot through thin cloud but that makes for a more interesting photo than one in a clear sky. This is still shot through a mylar filter, on the front of a 66mm f/6 apo refractor using the Canon 60Da for 1/25 sec exposure at ISO 100. The colours are natural, with the mylar filter providing a neutral “white light” image. With the Sun dimmed a lot by cloud, the longer exposure allowed picking up light and colours in the surrounding clouds.13897527 - M45, the Pleiades star cluster, in a series of exposures to test stacking images with HDR techniques.13897508 - A telephoto closeup of a region of the Milky Way containing an odd assortment of targets: the small constellation of Sagitta the Arrow (at bottom) with the small cluster M71, the green Dumbbell Nebula, M27, in Vulpecula the Fox (at upper left), and the asterism known as the Coathanger (at right), also known as Brocchi’s Cluster.13897417 - Comet Hartley 2 near the Pacman Nebula, NGC 281, in Cassiopeia. Stack of 4 x 6 minute exposures at ISO 1600 with Canon 5D MkII on A&M 105mm apo refractor at f/4.8 with Borg reducer/flattener. Bright star is Alpha Cas, Schedar. Autoguided with Celestron NexGuide autoguider. However, image of comet core is from only one exposure to minimize trailing from this fast-moving comet.13845764 - Mountain views in front of The Observatory Of Pic Du Midi De Bigorre, Hautes Pyrenees, Midi Pyrenees, France. The Col du Tourmalet is the highest paved mountain pass in the French Pyrenees second only to the Col de Portet. So in contrast to frequent claims.13845628 - View point of The Observatory Of Pic Du Midi De Bigorre, Hautes Pyrenees, Midi Pyrenees, France. The 12m Ponton dans le ciel, a glass walkway high above the Pyrenees at Pic du Midi de Bigorre, a 2877m mountain in the French Pyrenees, home to an astronomical observatory and visitors centre. The observatory is acccessible from the village of La Mongie by cablecar. Tourists often visit in time for the spectacular sunset across the mountains.13844960 - La Mongie lake of Oncet and a cable car rising to The Observatory Of Pic Du Midi De Bigorre, Hautes Pyrenees, Midi Pyrenees, France13844353 - The Observatory Of Pic Du Midi De Bigorre, Hautes Pyrenees, Midi Pyrenees, France13836923 - Northern lights display over pine trees. Laukvik, Nordland, Norway.13828369 - Wood mouse (Apodemus sylvaticus) on window with moon in background, Spain13828343 - Portrait of a Common pipistrelle (Pipistrellus pipistrellus) at night with the moon behind13828330 - Portrait of a Common pipistrelle (Pipistrellus pipistrellus) at night with the moon behind13828319 - Little Owl (Athene noctua) flying at night, Spain13828284 - Barn owl (Tyto alba) with red moon in background, Spain13828164 - Long-eared Owl (Asio otus) in flight, Salamanca, Castilla y León, Spain71431651 - Observatory in Saint-Michel-l'Observatoire, Alpes-de-Haute-Provence, Provence-Alpes-Côte d'Azur, France71429912 - Lunar eclipse on July 27th, 2018, Penzberg, Upper Bavaria, Germany13999717 - The North America Nebula (left of centre) and the Pelican Nebula (at centre) complex in Cygnus,framed with the bright star Deneb. The Cygnus Arc of IC 5068 is at bottom. Smaller Sharpless catalogue nebulas are at upper right,notably Sh 2-112. The nebulas show up well despite this being a "stock" camera,with no filters employed. The field of view is about 7.5° by 5°,similar to binoculars. This is a stack of 5 x 5-minute exposures with the Sharpstar 61 EDPH III apo refractor and its 0.75x Reducer for f/4.4,and the old Canon 6D DSLR at ISO 800,all on the ZWO AM5 mount autoguided with the ASIAir,a13999688 - Orion and the winter stars and constellations in a moonlit sky,on a chilly (-20°C) winter night on January 28,2023. Above Orion is Aldebaran and the Hyades star cluster in Taurus. Below Orion is Sirius in Canis Major. The red giant Betelgeuse and the blue giant Rigel stand out nicely above and below the Belt. Light from the first quarter Moon off frame illuminates the landscape. This serves as a good illustration of how the Belt stars in Orion point up to Aldebaran and down to Sirius.13999660 - The arcs and wisps of the Veil Nebula supernova remnant in Cygnus,framed with the open star cluster NGC 6940 in Vulpecula at lower right. The area is marked by a sharp transition between clear starry sky in the Millky Way and brownish-yellow areas obscured by interstellar dust with fewer stars visible. The nebula colours show up well despite this being a "stock" camera,with no filters employed.13999628 - The aptly-named Coathanger Cluster,a more properly an asterism of stars in Vulpecula. A true star cluster,NGC 6802,lies at the left end of the coathanger arm. The field contains diffuse blue reflection nebulosity which appears to not have a catalogue number. The small round emission nebula at bottom is Sharpless 2-82. A very small round red nebula above the right end of the Coathanger is Sh2-83.13999563 - The Geminid meteor shower of 2022,showing two bright Geminids leaving yellowish ion trails or "smoke" trains in their wake. The two meteors appeared about 45 minutes apart but are blended together here.13999533 - Venus as a bright evening star over the Blakiston Valley and Creek in Waterton Lakes National Park,May 29,2023. Above Venus are the stars Pollux and Castor in Gemini. The valley was ravaged by a forest fire in September 2017.13999509 - The passage of the SpaceX G2-9 Starlink group at about 3:30 am on May 14,2023,with the satellite chain still bright four days after its May 10 launch from Vandenburgh Air Force Base in California.13999476 - An aurora selfie under the arc of the Northern Lights on February 22,2023 on the Rocket Range Road outside the Churchill Northern Studies Centre in Churchill,Manitoba. This is looking southeast. This was a Kp5 display this night peaking between 8:30 and 9:30 pm.13999436 - An ice crystal halo around the waxing gibbous Moon set in the winter stars of a January night. The 22° halo is most obvious and with a reddish and sharper inner rim.,and a bluish and more diffuse outer edge. But a faint inner 8° halo is also visible,a rare halo sometimes called the Van Buijsen Halo (according to Lynch and Livingston in their book Color and Light in Nature; Minnaert also mentions it in his seminal book The Nature of Color and Light in the Open Air). It is not a lens flare as shots taken with the Moon well off to one side of the frame still show the inner halo centred on the Moo13999413 - A curtain of red and green Northern Lights arcing across the north on February 21,2023. This was not a bright display yet was still colourful. It demonstrates how even dim displays (by Churchill standards) can still appear quite colourfull to the camera.13999376 - Auroral streamers or rays rather than curtains as part of the pulsating phase of the great equinox display of Northern Lights on March 23,2023. The rays have a strong vertical structure from precipitating electrons but were pulsing off and on rather than rippling. While the predominent colour is green,there is a lot of red and magenta mixed in. The rays are converging upward to the magnetic zenith. This is looking east over my house.13999351 - A framing of the northern winter sky constellations of Auriga (left) and Perseus (upper right). The Messier star clusters M36,M37 and M38 in Auriga show up well at lower left,along with the Flaming Star,IC 405,and other IC nebulas in Auriga. The large nebula at bottom right is NGC 1499,the California Nebula. The grouping of blue stars at upper right is the Perseus OB Association,aka Melotte 20. Mars is at lower left in Taurus,where it was on March 17,2023.13999325 - This is a panorama of the evening sky looking east at sunset from Sunset Point at Bryce Canyon National Park,Utah.13999319 - This is the Perseid meteor shower over the badlands of Dinosaur Provincial Park,in the Red Deer River valley in Alberta,with the summer sky above filled with about two dozen meteors from the annual shower on August 12,2023. The meteors all appear to be streaking away from the radiant point in Perseus at left,below the "W" of Cassiopeia. The meteor trails are shortest near the radiant point,as at that location they are coming at us head on. The Andromeda Galaxy is near centre.13999304 - This is a framing of an array of emission nebulas in Cygnus: the bright North America Nebula (NGC 7000) at right,and to the right of it,the Pelican Nebula (IC 5067/8). Those bright nebulas are set amid a complex of fainter nebulosity,notably the Clamshell Nebula at left,as it has become known recently,and catalogued as Sharpless 2-119. At bottom right is the curving Cygnus Arc,aka IC 5068. The small star cluster NGC 7044,yellowed by interstellar dust,is below the Clamshell. The nebulas are marked by lots of structure and radial streaks,perhaps from magnetic fields.13999283 - An aurora selfie from the Churchill Northern Studies Centre with faint but colourful arcs to the northeast at this time. This was on February 19,2023. The light is from a small flashlight.13999258 - The open star cluster NGC 1528,at left,accompanied by the emission nebula NGC 1491,at right,aka the Fossil Footprint Nebula,both in Perseus. The very red star below NGC 1528 is SY Persei. The faint nebula at centre is unidentified – the nebulas Sharpless 2-209 and Sharpless 2-206 are in the area but their positions on the TriAtlas do not coincide with the nebula recorded here. Nor is it marked on any other atlas I was able to check. But the TriAtlas might plot the Sharpless nebulas incorrectly. But photos on-line label this object as Sh2-209. The bright star at bottom right is Lambda Persei.13999255 - This is the California Nebula,aka NGC 1499,in Perseus near the star Menkib,or Xi Persei,at bottom. While this is primarly an emission nebula,there is dust in the periphery forming some faint reflection nebulosity. The main nebula emits strongly in not only the red H-Alpha wavelength but also the blue-green H-Beta wavelength,thus the pink or magenta colour.page suivante
