2. Astronomy

NIGHT OVER ONTARIO

These photos were taken by Lynn Hilborn of Grafton, Ontario.
Pictures have appeared on the cover and inside editions of SkyNews magazine and in Sky & Telescope and Astronomy magazine, and as NASA's Astronomy Picture of the Day.

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Dark Nebula LDN988, 11 hour exposure taken with TEC 140 @f7 and FLI ML8300 camera.<br /> RGB each 2 hours (12x10m bin 1x1), Lum 5 hours (30x10m bin 1x1).<br /> Taken by Lynn Hilborn, WhistleStop Obs, Grafton, Ontario on August 24,25 and September 6, 2012
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Dark Nebula LDN988, 11 hour exposure taken with TEC 140 @f7 and FLI ML8300 camera.
RGB each 2 hours (12x10m bin 1x1), Lum 5 hours (30x10m bin 1x1).
Taken by Lynn Hilborn, WhistleStop Obs, Grafton, Ontario on August 24,25 and September 6, 2012

  • Sailboat Cluster (NGC225) at bottom center, Vdb4 in center, LDN 1291 top center. TEC 140 @f5.3 and ML8300 camera LRGB (L1x1 6x10m, RGB 2x2 12x5m each).<br /> Taken by Lynn Hilborn, WhistleStop Obs, September 2013.
  • Eastern Veil NGC 6992 (part of the Cygnus Loop) in narrow band. 12 hours of exposure, 4 hours each OIII, Ha, SII as RGB. Bin 1x1 with FLI ML8300 camera and TEC140 @f7.<br /> Taken by Lynn Hilborn, WhistleStop Obs, Grafton, Ontario...July 15,21,26,2011.<br /> <br /> One day just prior to the dawn of recorded history a brilliant light flashed suddenly in the night sky, its light unrivaled by any existing stars. The "new" star undoubtedly captured the imagination of early observers who likely struggled to explain its origin and interpret its meaning as it faded from sight over several weeks. We now know the sudden flash of light represented an extremely rare supernova occurring in our own galaxy some ten thousand years ago. Although the star was annihilated in the blast an immense glowing nebulous arc was left in its wake which we now call the Cygnus loop or Veil Nebula complex.<br /> <br /> The Cygnus loop spans some 80 light years and 3 degrees of summer sky in the constellation Cygnus. The delicate tendrils of glowing gas are not the remains of the dying star but are caused by an advancing shock front of the supernova as it crashes into the stationary gases of the interstellar medium. The expanding shell of material blasted from the dying star collides with stationary gases at high speeds (up to 1.4 million kilometers per hour) energizing the gas molecules. The gases then release the newly acquired energy in different wavelengths which include the brilliant colors of the visual spectrum. In some regions the gases are heated to millions of degrees causing the release of high energy x-rays.<br /> <br /> Ultimately the supernova remnant will dissipate over thousands of years returning some of its heavier elements like gold, calcium, iron to the interstellar medium. It's a humbling revelation to know the iron in our blood and calcium within our bones had its origin in the cores of ancient stars. Text courtesy of Robert Gendler.
  • Witch's Broom Nebula NGC 6960<br /> Ha 6x15m 1x1, OIII 6x15m 1x1 imaged with TEC 140 @f5.3 and ML 8300 camera.<br /> Imaged by Lynn Hilborn, WhistleStop Obs, Grafton, Ontario August 3, 2013<br /> ***Published in Astronomy Magazine, March 2014<br /> Ten thousand years ago, before the dawn of recorded human history, a new light must suddenly have appeared in <br /> the night sky and faded after a few weeks. Today we know this light was an exploding star and record the <br /> colorful expanding cloud as the Veil Nebula. Pictured above is the west end of the Veil Nebula known <br /> technically as NGC 6960 but less formally as the Witch's Broom Nebula. The expanding debris cloud gains its <br /> colors by sweeping up and exciting existing nearby gas. The supernova remnant lies about 1400 light-years away <br /> towards the constellation of Cygnus. This Witch's Broom actually spans over three times the angular size of the <br /> full Moon. The bright star 52 Cygni is visible with the unaided eye from a dark location but unrelated to the <br /> ancient supernova. Text from APOD, Astronomy Photo of the Day.
  • LDN 767, 778, vdB126 in Vulpecula. Canon 200mm f2.8 lens and ML8300 camera. LRGB L 10x10m, RGB 11x5m each.<br /> Taken by Lynn Hilborn, WhistleStop Obs,Grafton,Ontario July 15,16,2013.
  • Cocoon Nebula (IC5146) and M39. Taken with a 200mm Canon f2.8 lens and FLI ML8300 camera. RGB each 12x5m, Lum 16x10m, Ha 3x15m .<br /> Taken by Lynn Hilborn, WhistleStop Obs,Grafton,Ontario on July 13,14,15, 2013. Baader filters and a NJP Temma2 mount.
  • The Cave Nebula SH2-155. 15 hours of exposure HaLRGB. Taken by Lynn Hilborn, WhistleStop Obs,Grafton,Ontario. Imaged on August 01,20,21,22,2012. TEC 140 scope @f5.6 and FLI ML8300 camera with Baader filters on a Takahashi NJP Temma2 mount.<br /> Cave Nebula (Sh2-155), Distance: 2900 Light Years<br /> The Cave Nebula, Sh2-155 or Caldwell 9 is a very diffuse nebula within a larger nebula complex containing emission, reflection, and dark nebulosity. It is located in the constellation Cepheus.<br /> Right Ascension: 22:58 (hours : minutes)<br /> Declination: +62:34 (degrees : minutes)
  • The Cave Nebula SH2-155. 15 hours of exposure HaLRGB. Taken by Lynn Hilborn, WhistleStop Obs,Grafton,Ontario. Imaged on August 01,20,21,22,2012. TEC 140 scope @f7 and FLI ML8300 camera with Baader filters on a Takahashi NJP Temma2 mount.<br /> Cave Nebula (Sh2-155), Distance: 2900 Light Years<br /> The Cave Nebula, Sh2-155 or Caldwell 9 is a very diffuse nebula within a larger nebula complex containing emission, reflection, and dark nebulosity. It is located in the constellation Cepheus.<br /> Right Ascension: 22:58 (hours : minutes)<br /> Declination: +62:34 (degrees : minutes)
  • NGC 2170 my favourite diaphanous object... somthing you want to take fly fishing. This image is a combination of images from my NP101is @f4.3 and TEC 140 @f7. Images were take 2 years apart (Feb 2011 and Feb 2013). Both taken with FLI ML8300 camera and Baader filters. The object was shot between 33 and 39 degrees.<br /> <br /> In this celestial still life composed with a cosmic brush, dusty nebula NGC 2170 shines left of image center. Reflecting the light of nearby hot stars, NGC 2170 is joined by other bluish reflection nebulae, a red emission region, many dark absorption nebulae, and a backdrop of colorful stars. Like the common household items still life painters often choose for their subjects, these clouds of gas, dust, and hot stars are also commonly found in this setting - a massive, star-forming molecular cloud in the constellation Monoceros. The giant molecular cloud, Mon R2, is impressively close, estimated to be only 2,400 light-years or so away. At that distance, this canvas would be over 40 light-years across. Text from APOD (Astronomy Photo of the Day)
  • The Running Man nebula and M42 'star factory' in Orion.<br /> LHaRGB with TEC140 Af7 and ML8300 camera. Taken by Lynn Hilborn, WhistleStop Observatory, Grafton,Ontario...Feb9 and11, 2012.<br /> Sub exposures ranged from 10 seconds to 20 minutes in order to capture the full dynamic range.<br /> <br /> A recurring theme of destruction, upheaval, birth and rebirth occurs within the spiral arms of galaxies. HII regions within the spiral arms of galaxies serve as celestial recycling stations where the birth of new stars completes a great cycle, creating and recycling matter, ultimately enriching and replenishing the interstellar medium with heavier elements. These heavier elements may potentially become the building blocks of terrestrial planets and ultimately living organisms. The Orion Nebula is arguably the greatest of all HII clouds visible from our location within the Milky Way. With a gaseous repository of 10,000 suns, and illuminated by a cluster of hot young stars, the clouds of M42 glow with fantastic colors and shapes, giving us a birds eye view of one of the greatest star forming nurseries in our part of the galaxy.<br /> <br /> The radiance and beauty of Orion transcends dry astronomical facts, however the history as well as the physics and chemistry of the Orion Nebula is a tale worthy of telling that helps us understand the nebula's great significance. M42 is a complex cloud of glowing gas, mostly hydrogen but also helium, carbon, nitrogen, and oxygen in decreasing amounts. Although a true astronomical icon, M42 is essentially a bright condensation of the Orion A Molecular Cloud which extends far beyond the Orion Nebula. Although it spans 40 light years, the ionized gas of M42 is an exceptionally thin blister only 0.08 light years thick on the surface of the larger and optically invisible molecular cloud.<br /> <br /> Directly in front of M42 is a small grouping of hot O and B type stars known as the trapezium which shine between 5th and 8th magnitude. This grouping represents the 4 brightest members of an extended cluster of several thousand young stars many of which lie unseen within the opaque gas and dust. The bright trapezium grouping represents the cluster core where stars are packed so tight they exceed the stellar concentration of our suns vicinity some 20,000 times. Stars within the trapezium are separated by only 0.12 light years whereas our sun's nearest neighbor is 4 light years away. Text was written by Robert Gendler, and is used with his kind permission.
  • Dark Nebula LDN988, 11 hour exposure taken with TEC 140 @f7 and FLI ML8300 camera.<br /> RGB each 2 hours (12x10m bin 1x1), Lum 5 hours (30x10m bin 1x1).<br /> Taken by Lynn Hilborn, WhistleStop Obs, Grafton, Ontario on August 24,25 and September 6, 2012
  • NGC 7129 crop....TEC140 @f7 and FLI ML8300 camera on Tak NJP mount. Lum 1x1 21x10m RGB 2x2 each 21x5m.<br /> 9 hours of exposure. Taken by Lynn Hilborn, WhistleStop Obs, Grafton, Ontario on July 1,3,5,2011<br /> <br /> NGC 7129 (NGC 7133) text with permission of Robert Gendler<br /> Distance 3300 light years<br /> Right Ascension: 21 : 41.3 (hours : minutes)<br /> Declination: +66 : 06 (degrees : minutes)<br /> NGC 7129 is a young compact star forming region which displays an unusual patchwork of colorful nebulosity and bright stars contrasted against the dust clouds of the Milky Way. The astronomical correlate of those colors and textures is the rich interplay that occurs between young stars and the surrounding interstellar medium. NGC 7129 contains several bright reflection nebulae including the large blue reflection cloud NGC 7133 and the unusual small yellow reflection cloud LBN497. Also conspicuous in the field are several bright Herbig-Haro objects, the signatures of young stellar objects soon to emerge in the main sequence. The dominant blue reflection nebula, NGC 7133 is illuminated by two young B-type stars BD +65°1637 and BD +65°1638. Both stars are less than one million years old and represent the core of NGC 7129, a small cluster of low mass stars which populate the 36 light year wide cavity. BD +65°1638 is the older of the two illuminating stars and has played a critical role in the formation of NGC 7129. Around 100,000 years ago the ultraviolet radiation field from the young star began to burrow a cavity into the surface of a nearby molecular cloud. As the cavity expanded, a ridge like interface formed where the expanding cavity contacted the molecular cloud, triggering an intense period of contained star formation. The bright stars went on to illuminate the ambient dust surrounding the cluster, forming the brilliant reflection clouds we see now.<br /> The environment of NGC 7129 is a fertile star forming region where numerous young young stellar objects (YSOs) exist. Energetic outflows from several young protostars are the power source for several Herbig-Haro objects which populate the ridge along its northeast and southwest regions. These objects take their name from George Herbig and Guillermo Haro who first described them over 50 years ago. Today over 300 individual HH objects are known. These fascinating objects form when an energetic outflow from an infant star ionizes adjacent gas clouds in the slightly denser interstellar medium. The nascent stars are invisible optically but reveal their presence when they release highly collimated jets of ionized plasma which shock the surrounding interstellar medium. The shocked gases form a small compact emission cloud called a Herbig-Haro object (HH). Typically HH objects are found in active star forming regions. Today well over 300 individual HH objects are known in our galaxy.<br /> <br /> Although NGC 7129 is quite impressive at optical wavelengths, over 50% of the cluster stars are highly obscured young stellar objects, only detectable at infrared wavelengths. Cloaked by dense envelopes of dust and gas that characterize their early evolutionary stage as they contract towards the main sequence, they are mostly invisible at optical wavelengths. There are two major outflow sources within NGC 7129 that likely power many of the prominent Herbig-Haro objects. One source is an imbedded protostar adjacent to the unusual Herbig Be star LkH 234, a highly evolved pre-main sequence star located along the northern ridge. Herbig Ae/Be stars are intermediate mass pre-main-sequence stars analogous to their lower mass counterpart, the T-Tauri stars. An outflow of molecular gas arises from a source very close to LkH 234 and extends out some 26 light years along the ridge and into the cavity, powering several prominent Herbig Haro objects lying nearby to the northeast including HH 105, GGD 34, and GGD 35. The second major outflow source is located along the southern ridge and is known as FIRS 2. This protostellar system is likely the power source of the Herbig-Haro objects in the southwest of the complex, namely GGD 32 and the largest Herbig-Haro object in NGC 7129, HH 103. The ages of the cavity and protostellar objects within NGC 7129 seem to coincide and are about 100,000 years old.
  • Antares and Rho Ophiuchi complex with globular cluster M4. 18x4minutes ISO 1600 Canon 6d and TS71 f4.9 telescope.<br /> Taken by Lynn Hilborn, at WhistleStop Obs,Grafton,Ontario on June 21 and 23,2015.
  • Veil nebula
  • Cocoon nebula
  • Sagittarius Star Cloud
  • Pluto Blinked
  • Irregular Galaxy IC10 taken by Lynn Hilborn, WhistleStop Obs, Grafton,Ontario on August 28,29 and September 3,2013.<br /> TEC140 @f5.3 and FLI ML8300 camera.Lum 1x1 29x10m , RGB 2x2 9x10m each, Ha 2x2 6x30m.<br /> Lurking behind dust and stars near the plane of our Milky Way Galaxy, IC 10 is a mere 2.3 million light-years distant. Even though its light is dimmed by intervening dust, the irregular dwarf galaxy still shows off vigorous star-forming regions that shine with a telltale reddish glow in this colorful skyscape. In fact, also a member of the Local Group of galaxies, IC 10 is the closest known starburst galaxy. Compared to other Local Group galaxies, IC 10 has a large population of newly formed stars that are massive and intrinsically very bright, including a luminous X-ray binary star system thought to contain a black hole. Located within the boundaries of the northern constellation Cassiopeia, IC 10 is about 5,000 light-years across. Text from APOD Astronomy Photo of the Day.
  • Colourful galaxy and colourful stars- NGC5033 and starry companions. Taken by Lynn Hilborn, April 18 and May 19,2012 and processed June 2013. TEC 140 @f7 and FLI ML8300 camera. LRGB image ( L1x1 14x10m, RGB 2x2 8x5m each)<br /> <br /> Magnificent island universe NGC 5033 lies some 40 million light-years away in the well-trained northern constellation Canes Venatici. This telescopic portrait reveals striking details of dust lanes winding near the galaxy's bright core and majestic but relatively faint spiral arms. Speckled with pink star forming regions and massive blue star clusters, the arms span over 100,000 light-years, similar in size to our own spiral Milky Way. A well-studied example of the class of Seyfert active galaxies, NGC 5033 has a core that is very bright and variable. The emission is likely powered by a supermassive black hole. The bright nucleus and rotational center of the galaxy also seem to be slightly offset, suggesting NGC 5033 is the result of an ancient galaxy merger. Text from APOD, Astronomy Photo of the Day.
  • M63 Sunflower Galaxy<br /> Taken by Lynn Hilborn, March 30 and April 29, 2013. TEC 140 @f7 and FLI ML8300 camera with Baader filters. Tak NJP Temma2 mount. WhistleStop Obs,Grafton, Ontario.<br /> LRGB with Ha.
  • C\2011 Panstarrs 7 x 3 minute exposures June 3, 2013 at 11:30pm. Canon 60D modified with Canon f2.8 200mm lens, ISO 1600, 180 seconds each. Guided on NJP mount. Taken by Lynn Hilborn, WhistleStop Obs, Grafton,Ontario.<br /> Combined in Registar (Median\Mean) to remove major plane trails in 4 of the 7 exposures ... this is the eastern flight path out of Toronto with the trans atlantic night departures.
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