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$A closeup of Sirius in Canis Major, taken in moonlight, with the 130mm f/6 apo refractor.$

13900381 - A closeup of Sirius in Canis Major, taken in moonlight, with the 130mm f/6 apo refractor.

$The 8-day-old Moon in twilight during a particularly colourful sunset, November 8, 2016 from home. A single exposure through the Explore Scientific FCD100 4-inch apo refractor at f/7 and with the Nikon D750 at ISO 100.$

13900278 - The 8-day-old Moon in twilight during a particularly colourful sunset, November 8, 2016 from home. A single exposure through the Explore Scientific FCD100 4-inch apo refractor at f/7 and with the Nikon D750 at ISO 100.

$Composite image digitally created in Photoshop of images taken during October 27, 2004 total lunar eclipse, from Alberta Canada. Images taken through 5-inch apo refractor at f/6 with Canon Digital Rebel camera at ISO 200.$

13899961 - Composite image digitally created in Photoshop of images taken during October 27, 2004 total lunar eclipse, from Alberta Canada. Images taken through 5-inch apo refractor at f/6 with Canon Digital Rebel camera at ISO 200.

$9-day-old gibbous Moon, taken April 23, 2010, with Astro-Physics 130mm apo refractor, plus 2x Barlow for f/12 and 1600mm focal length. Canon 7D camera at ISO 100. Seeing poor -- this was the sharpest of the lot.$

13899546 - 9-day-old gibbous Moon, taken April 23, 2010, with Astro-Physics 130mm apo refractor, plus 2x Barlow for f/12 and 1600mm focal length. Canon 7D camera at ISO 100. Seeing poor -- this was the sharpest of the lot.

$A closeup of Rigel in Orion, taken in moonlight, with the 130mm f/6 apo refractor.$

13899454 - A closeup of Rigel in Orion, taken in moonlight, with the 130mm f/6 apo refractor.

$Taken with Astro-Physics 4-inch Traveler apo refractor at f/6. With Hutech-modified Canon 5D camera at ISO800 for 7 minutes. Stack of two exposures. Taken from Coonabarabran, NSW, Australia.$

13899361 - Taken with Astro-Physics 4-inch Traveler apo refractor at f/6. With Hutech-modified Canon 5D camera at ISO800 for 7 minutes. Stack of two exposures. Taken from Coonabarabran, NSW, Australia.

$M31 Andromeda Galaxy, with TMB 92mm apo refractor and Borg 0.85x reducer/flattener for f/4.8 and Canon 20Da camera at ISO400 for 2 x 15 minute exposures. North is at bottom, south at top (better balance with this framing)$

13898970 - M31 Andromeda Galaxy, with TMB 92mm apo refractor and Borg 0.85x reducer/flattener for f/4.8 and Canon 20Da camera at ISO400 for 2 x 15 minute exposures. North is at bottom, south at top (better balance with this framing)

$A selfie of me observing in the moonlight with the 80mm apo refractor. For use as a book illustration.$

13898147 - A selfie of me observing in the moonlight with the 80mm apo refractor. For use as a book illustration.

$A selfie of me observing in the moonlight with the 80mm apo refractor. For use as a book illustration.$

13900440 - A selfie of me observing in the moonlight with the 80mm apo refractor. For use as a book illustration.

$NGC 7000, the North America Nebula, with the Pelican Nebula, IC 5067, at right, in Cygnus, taken from home November 21, 2016 as part of testing of the Explore Scientific FCD100 102mm apo refractor. This is a stack of 5 x 6-minute exposures at f/7 with the ES field flattener, and at ISO 1600 with the filter-modified Canon 5D MkII. Star diffraction spikes added with AstronomyTools actions.$

13900337 - NGC 7000, the North America Nebula, with the Pelican Nebula, IC 5067, at right, in Cygnus, taken from home November 21, 2016 as part of testing of the Explore Scientific FCD100 102mm apo refractor. This is a stack of 5 x 6-minute exposures at f/7 with the ES field flattener, and at ISO 1600 with the filter-modified Canon 5D MkII. Star diffraction spikes added with AstronomyTools actions.

A demo image with the Orion 80mm CF Apo and Celestron AVX mount, with 3 x 8 minute and 3 x 6 minutes, at ISO 1600 with Canon 6D MkII plus shorter 3 x 2 minute and 3 x 1 minute exposures blended in with luminosity masks. Guided with the Orion Starshoot and Orion finderscope, using PHD2, with a lot of wild excursions in the guiding.

13897608 - A demo image with the Orion 80mm CF Apo and Celestron AVX mount, with 3 x 8 minute and 3 x 6 minutes, at ISO 1600 with Canon 6D MkII plus shorter 3 x 2 minute and 3 x 1 minute exposures blended in with luminosity masks. Guided with the Orion Starshoot and Orion finderscope, using PHD2, with a lot of wild excursions in the guiding.

$The partial eclipse of the Sun, October 23, 2014, as seen from Jasper, Alberta, shot under clear skies through a mylar filter, on the front of a 66mm f/6 apo refractor using the Canon 60Da for 1/8000 (!) sec exposure at ISO 100. The colours are natural, with the mylar filter providing a neutral “white light” image. The big sunspot on the Sun that day is just disappearing behind the Moon’s limb. The mylar filter gave a white Sun, its natural colour, but I have tinted the Sun’s disk yellow for a more pleasing view that is not just white Sun/black sky.$

13897388 - The partial eclipse of the Sun, October 23, 2014, as seen from Jasper, Alberta, shot under clear skies through a mylar filter, on the front of a 66mm f/6 apo refractor using the Canon 60Da for 1/8000 (!) sec exposure at ISO 100. The colours are natural, with the mylar filter providing a neutral “white light” image. The big sunspot on the Sun that day is just disappearing behind the Moon’s limb. The mylar filter gave a white Sun, its natural colour, but I have tinted the Sun’s disk yellow for a more pleasing view that is not just white Sun/black sky.

$Total eclipse of the Moon, December 20/21, 2010, taken from home with 130mm AP apo refractor at f/6 and Canon 7D at ISO 400 for 4 seconds, single exposure, shortly after totality began.$

13899244 - 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 for 4 seconds, single exposure, shortly after totality began.

$The rising waning crescent Moon on the morning of June 16, 2012, taken from home through the 130mm apo refractor at f/6 and with the Canon 60Da.$

13898813 - The rising waning crescent Moon on the morning of June 16, 2012, taken from home through the 130mm apo refractor at f/6 and with the Canon 60Da.

$Double Cluster in Perseus, taken Oct 14, 2007 with 5-inch apo refractor at f/6 with Canon 20Da at ISO 800 for stack of 4 x 8 minute exposures. Some haze. Used ST402 guider.$

13898664 - Double Cluster in Perseus, taken Oct 14, 2007 with 5-inch apo refractor at f/6 with Canon 20Da at ISO 800 for stack of 4 x 8 minute exposures. Some haze. Used ST402 guider.

$M8 Lagoon Nebula and M20 Trifid Nebula, with Astro-Physics Traveler 4-inch apo refractor at f/6 with Canon 5D camera, for 7 minutes each at ISO800. Stack of four exposures. Taken from Coonabarabran, NSW, Australia, July 2006. Slight trailing and soft focus.$

13900508 - M8 Lagoon Nebula and M20 Trifid Nebula, with Astro-Physics Traveler 4-inch apo refractor at f/6 with Canon 5D camera, for 7 minutes each at ISO800. Stack of four exposures. Taken from Coonabarabran, NSW, Australia, July 2006. Slight trailing and soft focus.

$The partial solar eclipse as seen from Calgary, Alberta, on May 20, 2012, but seen as an annular eclipse from the SW United States. This was taken at maximum eclipse at 7:14 pm MDT, with 62% of the Sun covered. Taken from the TELUS Spark science centre at a public event there, and taken with an 80mm A&M apo refractor at f/6 (480mm focal length) and Canon 60Da camera at ISO 100 and 1/250 second exposure through a Baader solar filter. The Sun was in high cloud and not in a clear blue sky.$

13900115 - The partial solar eclipse as seen from Calgary, Alberta, on May 20, 2012, but seen as an annular eclipse from the SW United States. This was taken at maximum eclipse at 7:14 pm MDT, with 62% of the Sun covered. Taken from the TELUS Spark science centre at a public event there, and taken with an 80mm A&M apo refractor at f/6 (480mm focal length) and Canon 60Da camera at ISO 100 and 1/250 second exposure through a Baader solar filter. The Sun was in high cloud and not in a clear blue sky.

$Total eclipse of the Moon, December 20/21, 2010, taken from home with 130mm AP apo refractor at f/6 and Canon 7D at ISO 400. An HDR composite of 9 images from 1/125 second to 2 seconds, composited in Photoshop CS5. Vibrancy increased to show bring out the colour variations across the shadow and at the edge of the shadow. Taken at about 12:21 am MST on Dec 21, about 20 minutes before totality began, during the partial phase.$

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.

$A telescopic closeup of Comet Lovejoy (C/2014 Q2) on January 19, 2015. I shot this from near Silver City, New Mexico, using a TMB 92mm apo refractor at f/4.4 and using a Canon 6D at ISO 1600 for a stack of 4 x 5 minute exposures. The ion tail is primarily from a single exposure to minimize blurring from the comet’s motion relative to the stars. The rest of the image is from the stacked combination to minimize noise.$

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.

$The region of nebulosity on the Cepheus-Cassiopeia border with NGC 7822 (top) and Ced 214 (bottom). This is a stack of 15 x 7 minute exposures at f/4.4 with the 92mm apo refractor and filter-modified Canon 5D Mark II at ISO 800. Taken from New Mexico. Focus is a little soft.$

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.

$The partial eclipse of the Sun, October 23, 2014, as seen from Jasper, Alberta, in this case shot through thin cloud but that makes for a more interesting photo than one in a clear sky. This is still shot through a mylar filter, on the front of a 66mm f/6 apo refractor using the Canon 60Da for 1/25 sec exposure at ISO 100. The colours are natural, with the mylar filter providing a neutral “white light” image. With the Sun dimmed a lot by cloud, the longer exposure allowed picking up light and colours in the surrounding clouds.$

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.

$Comet Hartley 2 near the Pacman Nebula, NGC 281, in Cassiopeia. Stack of 4 x 6 minute exposures at ISO 1600 with Canon 5D MkII on A&M 105mm apo refractor at f/4.8 with Borg reducer/flattener. Bright star is Alpha Cas, Schedar. Autoguided with Celestron NexGuide autoguider. However, image of comet core is from only one exposure to minimize trailing from this fast-moving comet.$

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.

$The North America Nebula (left of centre) and the Pelican Nebula (at centre) complex in Cygnus,framed with the bright star Deneb. The Cygnus Arc of IC 5068 is at bottom. Smaller Sharpless catalogue nebulas are at upper right,notably Sh 2-112. The nebulas show up well despite this being a "stock" camera,with no filters employed. The field of view is about 7.5° by 5°,similar to binoculars. This is a stack of 5 x 5-minute exposures with the Sharpstar 61 EDPH III apo refractor and its 0.75x Reducer for f/4.4,and the old Canon 6D DSLR at ISO 800,all on the ZWO AM5 mount autoguided with the ASIAir,a$

13999717 - 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,a

$M33, the Triangulum Spiral, a dwarf spiral in the Local Group. This is a 6-image stack of 12-minute exposures with the Canon 7D at ISO 800 on the 130mm Astro-Physics apo refractor at f/6 on AP 600E mount and SBIG SG4 autoguider. Poor seeing bloated star images somewhat.$

13899185 - M33, the Triangulum Spiral, a dwarf spiral in the Local Group. This is a 6-image stack of 12-minute exposures with the Canon 7D at ISO 800 on the 130mm Astro-Physics apo refractor at f/6 on AP 600E mount and SBIG SG4 autoguider. Poor seeing bloated star images somewhat.

IC 1318 area of Cygnus around Gamma Cygni. Stack of 4 x 15 minute exposure on a superb night, with TMB 92mm apo with Canon 5D MkII at ISO 400. A cooler night than previous ones as well, so lower base noise. Borg FF.

13899152 - IC 1318 area of Cygnus around Gamma Cygni. Stack of 4 x 15 minute exposure on a superb night, with TMB 92mm apo with Canon 5D MkII at ISO 400. A cooler night than previous ones as well, so lower base noise. Borg FF.

$The Pleiades star cluster, aka Seven Sisters, or M45, in Taurus. A deep exposure showing the reflection nebulosity which fills the area. This is a stack of 5 x 14 minute exposures with the TMB 92mm apo refractor and Borg 0.85x flattener/reducer at f/4.8 and Canon 5D MkII at ISO 800. Taken from home Oct 9/10, 2013.$

13900605 - The Pleiades star cluster, aka Seven Sisters, or M45, in Taurus. A deep exposure showing the reflection nebulosity which fills the area. This is a stack of 5 x 14 minute exposures with the TMB 92mm apo refractor and Borg 0.85x flattener/reducer at f/4.8 and Canon 5D MkII at ISO 800. Taken from home Oct 9/10, 2013.

$The Carina Nebula (aka Eta Carinae) in the southern sky, shot December 11, 2012 from Timor Cottage, Coonabarabran, NSW, Australia. This is a stack of 5 x 12 minute exposures at ISO 400 with the Canon 5D MkII (filter modified) and Astro-Physics 105mm Traveler apo refractor and 6x7 field flattener.$

13900176 - The Carina Nebula (aka Eta Carinae) in the southern sky, shot December 11, 2012 from Timor Cottage, Coonabarabran, NSW, Australia. This is a stack of 5 x 12 minute exposures at ISO 400 with the Canon 5D MkII (filter modified) and Astro-Physics 105mm Traveler apo refractor and 6x7 field flattener.

$Waxing crescent Moon with Earthshine, April 18, 2010. Taken with 5-inch (130mm) Astro-Physics apo refractor and Canon 7D camera, at f/6 and ISO 100. HDR stack of 9 exposures from 6 seconds to 1/40th second at 1-stop intervals. Combined in Photomatix Pro.$

13899313 - Waxing crescent Moon with Earthshine, April 18, 2010. Taken with 5-inch (130mm) Astro-Physics apo refractor and Canon 7D camera, at f/6 and ISO 100. HDR stack of 9 exposures from 6 seconds to 1/40th second at 1-stop intervals. Combined in Photomatix Pro.

$Omega Centauri globular cluster, with Canon 20Da camera with 4-inch Astro-Physics Traveler apo refractor at f/6 for 4 minutes each at ISO800. Stack of 4 exposures, averaged stacked. Plus short 2-minute exposure for core area. Taken from Queensland, Australia, July 2006.$

13899271 - Omega Centauri globular cluster, with Canon 20Da camera with 4-inch Astro-Physics Traveler apo refractor at f/6 for 4 minutes each at ISO800. Stack of 4 exposures, averaged stacked. Plus short 2-minute exposure for core area. Taken from Queensland, Australia, July 2006.

$Comet Holmes, 17P, taken Nov 1, 2007 on excellent night. Taken with A&M 105mm apo refractor at f/5 with Borg 0.85x compressor/field flattener on SkyWatcher HEQ5 mount. Canon 20Da camera at ISO400. Composite of 4 min, 2min, 1min, 30sec, 15sec, and 7 sec exposures, each exposure being a stack of 3 to 4 identical exposures. Registered and stacked in Photoshop (HDR mode did not produce usable result, so manually composited with sucessively smaller masks to reveal short exposure content around nucleus. Contrast exaggerated with Curves to bring out very faint tail structure. North up, so tail to the$

13898997 - Comet Holmes, 17P, taken Nov 1, 2007 on excellent night. Taken with A&M 105mm apo refractor at f/5 with Borg 0.85x compressor/field flattener on SkyWatcher HEQ5 mount. Canon 20Da camera at ISO400. Composite of 4 min, 2min, 1min, 30sec, 15sec, and 7 sec exposures, each exposure being a stack of 3 to 4 identical exposures. Registered and stacked in Photoshop (HDR mode did not produce usable result, so manually composited with sucessively smaller masks to reveal short exposure content around nucleus. Contrast exaggerated with Curves to bring out very faint tail structure. North up, so tail to the

$Open cluster pair of NGC 2451 (right), a bright loose cluster, and NGC 2477 (left), a fainter but very rich open cluster. The field is also filled with faint emission nebulosity. Taken from Timor Cottage, Coonabarabran, NSW, Australia, December 12, 2010. This is a stack of 5 x 6 minute exposures at ISO 1600 with Canon 5D MkII camera on 105mm Astro-Physics Traveler apo refractor at f/5.8 with 6x7 field flattener.$

13898239 - Open cluster pair of NGC 2451 (right), a bright loose cluster, and NGC 2477 (left), a fainter but very rich open cluster. The field is also filled with faint emission nebulosity. Taken from Timor Cottage, Coonabarabran, NSW, Australia, December 12, 2010. This is a stack of 5 x 6 minute exposures at ISO 1600 with Canon 5D MkII camera on 105mm Astro-Physics Traveler apo refractor at f/5.8 with 6x7 field flattener.

A selfie of me using the Astro-Physics Traveler 105mm apo scope on a night of visual observing logging comments on deep-sky objects for ebook use. The night was hazy and smoky and had more horizon sky glows than usual.

13898121 - A selfie of me using the Astro-Physics Traveler 105mm apo scope on a night of visual observing logging comments on deep-sky objects for ebook use. The night was hazy and smoky and had more horizon sky glows than usual.

$Messier 81 (the spiral galaxy below) and M82 (the irregular galaxy on top) in Ursa Major. M81 is Bode’s Galaxy, while M82 is the Cigar Galaxy. The galaxy at bottom left is NGC 3077 This is a stack of 10 x 10-minute exposures with the Canon EOS Ra camera at ISO 800 through the Astro-Physics 130mm apo refractor at f/6 with the 6x7 field flattener lens. Taken April 24/25, 2020. North is up in this view.$

13898077 - Messier 81 (the spiral galaxy below) and M82 (the irregular galaxy on top) in Ursa Major. M81 is Bode’s Galaxy, while M82 is the Cigar Galaxy. The galaxy at bottom left is NGC 3077 This is a stack of 10 x 10-minute exposures with the Canon EOS Ra camera at ISO 800 through the Astro-Physics 130mm apo refractor at f/6 with the 6x7 field flattener lens. Taken April 24/25, 2020. North is up in this view.

NGC 7000 and Pelican Nebula with TMB 92mm apo and Canon 5D Mk II on a superb night, with stack of 2 x 15 minutes + 2 x 12 minutes at ISO400 and Borg 0.85x flattener/reducer for f/4.6. Standard exposure is 12 minutes but the night was so good I did two at 15 minutes with no problem.

13897734 - NGC 7000 and Pelican Nebula with TMB 92mm apo and Canon 5D Mk II on a superb night, with stack of 2 x 15 minutes + 2 x 12 minutes at ISO400 and Borg 0.85x flattener/reducer for f/4.6. Standard exposure is 12 minutes but the night was so good I did two at 15 minutes with no problem.

70260577 - Philippine eagle with Mount Apo, Mindanao Island, Philippines, Asia

70484106 - 'Beach View From Resort Window; Apo Island, Philippines'

70485383 - 'A Sea Turtle Swims Underwater In The Apo Island Marine Reserve And Fish Sanctuary; Apo Island, Negros Oriental, Philippines'

70482879 - Sea Krait And Scuba Diver, Apo Island Marine Park, Philippines

70482878 - 'Apo Island Marine Park, Philippines, Asia; Scuba Diver'

70482877 - 'Apo Island Marine Park Negros Oriental Island Philippines Southeast Asia; Scuba Divers'

A multitude of sponges, tunicates, feather stars, sea stars, soft and hard corals as well as fish co-exist harmoniously in the reefs at Cogon. Apo Island marine reserve, Philippines (Visayan sea)

70149866 - A multitude of sponges, tunicates, feather stars, sea stars, soft and hard corals as well as fish co-exist harmoniously in the reefs at Cogon. Apo Island marine reserve, Philippines (Visayan sea)

$9-day-old gibbous Moon, taken April 23, 2010, with Astro-Physics 130mm apo refractor, plus 2x Barlow for f/12 and 1600mm focal length. Canon 7D camera at ISO 100. Seeing poor -- this was the sharpest of the lot.$

70704912 - 9-day-old gibbous Moon, taken April 23, 2010, with Astro-Physics 130mm apo refractor, plus 2x Barlow for f/12 and 1600mm focal length. Canon 7D camera at ISO 100. Seeing poor -- this was the sharpest of the lot.

70163781 - Mount Apo, highest peak in Mindanao, Philippines

70149876 - Over under image of divers and bangka, traditional Philippine boat, Apo Island, Negros, Philippines

70149869 - Snorkeller enjoys life at Apo island Marine Reserve, Philippines

$A telescopic closeup of Comet Lovejoy (C/2014 Q2) on January 19, 2015. I shot this from near Silver City, New Mexico, using a TMB 92mm apo refractor at f/4. 4 and using a Canon 6D at ISO 1600 for a stack of 4 x 5 minute exposures. The ion tail is primaril$

71146693 - 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 primaril