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Found 80 results

  1. The Southern Beehive Cluster ( NGC 2516 ) in the constellation Carina re-processed ( improved colour balance, more colour in the smaller stars and lower saturation overall ): previous version: ( click on image to see larger ) Because of its similarity M44, NGC 2516, which is only visible from lower latitudes, has become known as the Southern Beehive Cluster. At a distance of around 1300 light years, NGC 2516 is relatively close to us and resides in the same spiral arm of the Milkyway as we do. Containing around 100 stars, with a number of them in the magnitude 5 to 6 range, NGC 2516 has an apparent magnitude of 3.8 and is visible to the naked eye as a small bright hazy patch at the edge of the Milkyway. Details: RA 7h 58.4m, Dec -60 deg 41.9' Skywatcher Quattro 10" f4 Newtonian telescope Skywatcher AZ Eq6 GT Mount. Guiding: Orion Shortube 80 guidescope, Starshoot Autoguider, PHD2, guiding RA only Baader MPCC Mark 3 Coma Corrector. Hutech IDAS D1 light pollution filter Nikon D5300 (unmodified) Long exposure noise reduction on Stack of 14 x 360sec images @ ISO400 Pixinsight
  2. The Southern Pinwheel Galaxy ( Messier 83, NGC 5236 ) in the constellation Hydra. ( click on image to see fuill size ) Messier 83 is a relatively large and bright spiral galaxy visible from southern and mid latitudes. Clearly visible is the central bar with its bright central bulge as well as multiple dark dust lanes and areas of nebulosity in the sweeping arms. At a distance of 15 Million light years, the Southern Pinwheel Galaxy, whilst close in astronomical terms, is too far away and hence way too small for my backyard telescope to resolve individual stars; so all of the stars that can be seen are in fact in the near foreground of the image and reside, like us, in the Milkyway Galaxy. Much harder to see are the many far more distant galaxies that look like tiny fuzzy stars in the image. The easiest of which are PGC 724536 and PGC 48132 that appear close together in the centre of the image just to the right of Messier 83. Both are edge on and look like tiny flying saucers. Details: Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2 software. Nikon D5300 (unmodified) Hutech IDAS D1 filter, 14bit NEF, Long Exp. NR on. 25 June 2016. 17 x 4min ISO400 Pixinsight and photoshop. Links: https://500px.com/mikeoday http://photo.net/photos/MikeODay
  3. Ptolemy's Cluster in the constellation Scorpius ( Messier 7, NGC 6475 ) Scrapbook page ...
  4. Bright Nebula NGC 6357 in Scorpius { Post edited to include new image with adjusted colour balance ( blue level slightly increased in highlights and mid tones to improve colour balance of stars) } new: original: ( clidk on image to see larger ) NGC 6357 in Scorpius is a diffuse nebula discovered in 1837 by John Herschel and is around 400 light years wide and about 8,000 light years from Earth. I captured a few subs NGC 6357 over the weekend but the cloud kept coming over so I gave up and went back to my old data from 2 years ago. This image is the result of applying my current workflow to the old data. Details: Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Orion 80mm f5 guide scope and auto guider - PHD2. . Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. UHC-S - 100 x 100 sec ISO800 (14bit NEF, Long Exp. NR on). Pixinsight and photoshop. 5 October 14 re-processed 31 July 2016 Links: https://500px.com/mikeoday http://photo.net/photos/MikeODay
  5. Astrophotography Scrapbook Vol. 1 Cover Page Lagoon Nebula in Sagittarius ( Messier 8, NGC 6523 ) The Fighting Dragons of Ara ( NGC 6188 ) War and Peace in Scorpius ( NGC 6357 ) Spiral Galaxy NGC 6744 in Pavo Ptolemy's Cluster in Scorpius ( Messier 7, NGC 6475 ) A Million Stars in the Deep South ( NGC 104, 47 Tucanae ) A Wishing Well in Carina ( NGC 3532 ) A Beehive in the Southern Sky ( NGC 2516 ) The Sliver Coin in Sculptor ( NGC 253 ) The Great Nebula in Orion ( Messier 42, NGC 1976 ) A Cluster of Pearls in Centaurus ( NGC 3766 ) - new 5 Dec resources: Scrapbook Template ------------------------------------- When I show my astrophotography images to my friends and family they invariably want to know what they are looking at. This led me to wonder if there was a way I could display my images on a single page together with a few notes on the target object as well as few technical details of the capture for those who might be interested. What I came up with a "scrapbook" like page that combines all of these three elements in a single PDF sheet ( or jpeg image) that ultimately I might combine together to form a PDF book that I can share online or send to friends and family. In the meantime, I thought I might post in this thread each page of my work-in-progress towards volume 1 of my Astrophotography Scrapbook. Any and all comments, observations, suggestions and constructive criticisms will be warmly received. Cheers Mike ps. The pages have been sized to fit full screen on an IPAD
  6. MikeODay

    Orion Nebula

    From the album: Mike's Images

    Orion Nebula Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, JPEG Fine, Long Exp. NR on. HDR processed in PixInsight - 20x120sec, - 20x30sec, - 20x 8sec, - 12x4sec. Individual groups aligned and integrated. Then four integrated images aligned and HDR combined. 17 January 2015 - reprocessed 25 Apr 2015

    © Copyright Mike O'Day 2015 - all rights reserved

  7. From the album: Mike's Images

    NGC 2070 Tarantula Nebula Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Baader MPCC Mark 3 Coma Corrector. Nikon D300 (unmodified). 80 x 30 sec ISO800 unguided. 24 Apr 14 Reprocessed 9 August 15

    © Copyright Mike O'Day 2015 - all rights reserved

  8. From the album: Mike's Images

    Eagle Nebula - Messier 16 Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, 14bit NEF, Long Exp. NR on. 33 x 180sec (1/3 before & 2/3 after zenith) New Moon, 4deg C, 75%RH, moderate LP. PixInsight

    © Copyright Mike O'Day 2015 - all rights reserved

  9. Well it was a good night, weather-wise, last night (12-Nov-2017) in this part of Oxfordshire. Cool (3 degrees) but amazingly dry, really (85%.) And so, for once, everything wasn't covered in dew by the end of the night. After an earlier debacle with coma-corrector spacing, I've shaved off a further 0.5mm to try and tweak it a bit better, but I've also (for my sins) started a trial period with PI. I've so far eschewed this box of tools in favour of simpler, and some home-grown, things. But I'm interested in finding out more about what so many people use... even if only to understand the PI-speak language a bit better. As a result of all this, I want to try things out on some smallish datasets, and ended up with: Crescent, 12 x 300s (60 min) Pelican, 17 x 300s (85 min) Iris, 12 x 300s (60 min) Horsehead, 6 x 300s (30 min) Quattro 8" on Avalon M-Uno, QHY8L OSC, captured, guided, and dithered, by Nebulosity, pretty poorly processed in PI (my fault, not its) including bias, darks, and flats. Some observations about the images: Crescent... a difficult RGB target, I've tried but failed to reduce the background stars Pelican... just a bit too big for the frame, but the extra data (more than 60 mins) helps with noise Iris... real problems with the background. The APS-C sensor is just a bit too big for this scope? Horsehead... my first ever attempt at this. Pleased to have resolved the Alnitak double. Sad to have framed it so poorly for the Flame. No doubt the processing is very ham-fisted for my first use of PI, so any C&C is positively encouraged! Thanks for looking.
  10. https://www.flickr.com/photos/mike-oday/19573176273/ Blue Moon - 31st July 2015 Skywatcher Quattro 10" f4 Newtonian ("full moon" dust cap in place). Skywatcher AZ Eq6 GT Mount Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). ISO200, 14bit NEF, 487 sub exposures @ 1/50th Subs taken over 45min period covering Full Moon @ 10:42 UT (8.42pm local time). Processed using Registax, Pixinsight & Photoshop
  11. Still not entirely happy with this one - I ran out of time to get a set of longer exposures during the short period I had with Pleiades high enough above the Northern horizon ( 30 deg peak altitude from my location ) and since then the weather and moon have conspired against me! Description: Pleides in the Taurus Constellation ( Messier 45 ) by Mike O'Day ( 500px.com/MikeODay ) Pleides ( aka The Seven Sisters ) is visible to the naked eye low in the northen skies in the early summer of the Southern Hemisphere. It is bright open cluster of hundreds of blue stars in clouds of nebulosity that are relatively close to earth at around 430 light years distance. Links: 500px.com/MikeODay photo.net/photos/MikeODay Details: Messier 45 - RA 3h 48m, Dec -24deg 10'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Orion Short Tube 80mm guide scope & auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector & UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. Combination of 80 images from 4 sec @ ISO100 through to 40 sec @ ISO 800. Pixinsight & Photoshop 17 October 2015
  12. This is a re-processed version of an old capture of mine taken last year when I was a two day old baby astrophotographer. Back then I was only just learing how to polar align my scope on its tripod and auto-guiding was a distant goal. This is a stack of 15 x 30sec images from my unmodified Nikon D300 ( I now use an unmodified D5300 as it is lighter and causes less flex in the focuser ). Description: The Jewel Box Cluster in the Crux Constellation ( NGC 4755 ) by Mike O'Day ( 500px.com/MikeODay ) Viewed through a telsecope, John Herschel described the Jewel Box Cluster as "a casket of varioulsy coloured precious stones" - hence the name. The Jewel Box, visible only from the Southern Hemisphere and appearing as a bright fuzzy star to the naked eye, is a cluster of around 100 ( mostly blue giant ) stars approximately 7000 light years from Earth. Links: 500px.com/MikeODay photo.net/photos/MikeODay Details: NGC 4755 - RA 12h 54.5m, Dec -60deg 26'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Unguided. Baader MPCC Mark 3 Coma Corrector. Nikon D300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. Combination of 15 images 30 sec @ ISO800. Registax & Photoshop 24 April 2014 (re-processed Nov 2015)
  13. One of my first asto images - reprocessed today while I'm waiting to see if the clouds are going to break up and blow away. NGC 2070 Tarantula Nebula Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Baader MPCC Mark 3 Coma Corrector. Nikon D300 (unmodified). 80 x 30 sec ISO800 unguided. Reprocessed 9 August 15
  14. Nebulae and Clusters in the North East quadrant of the Small Magellanic Cloud ( Tucana Constellation ) ( NGC 292, 299, 306, 330, 346, 411, 416, 422 ) by Mike O'Day ( 500px.com/MikeODay ) The Small Magellanic Cloud (SMC) is a small spiral galaxy about 7000 light years in diamater and is one of our near neighbours. At 'only' around 200,000 light years distance, it shines brightly in the southern sky and is clearly visible to the naked eye even in moderately ligh polluted skies. Links: 500px.com/MikeODay photo.net/photos/MikeODay Details: This image ~ RA 1h 2m, Dec -72deg 2'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount. Orion Short Tube 80mm guide scope & auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector & UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. 59 x 200 sec ISO 800 over two nights. Pixinsight & Photoshop 9 September 2015 & 11 October 2015 ( processed 11 Oct 2015 )
  15. Comet 252P/LINEAR passing through the constellation Mensa and approaching Earth on the 18th March 2016 by Mike O'Day ( 500px.com/MikeODay ). Comet 252P/LINEAR is a near-Earth comet that was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) project in April of 2000. 252P has an orbital period of 5.3 years and passes close to the orbit of the Earth. In 2016 it passed 'very close' to Earth (in astronomical terms) on the 21st of March 2016, when, at its nearest, it was only 14 times the distance to the moon (~5.3 million kms). This image was taken three days before comet 252P/LINEAR made its closest approach when it was at a distance of about 5.9 million kms ( position as at ~16:22 Fri 18 Mar 2016 UTC as seen from the Blue Mountains above Sydney Australia ) Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: RA 06h 40m 38s, Dec -80 deg 18' 37" (Epoch 2016.2) Skywatcher Quattro 10" f4 Newtonian Skywatcher AZ Eq6 GT Mount Guiding: Orion Shortube 80 guidescope, Starshoot Autoguider, PHD2, (guiding on star) Baader MPCC Mark 3 Coma Corrector Hutech IDAS D1 light pollution filter Nikon D5300 (unmodified) Field of view (min) ~ 74 x 49 Stack of 185 x 7sec images @ ISO6400 Pixinsight (incl. Comet Alignment tool) Comet moved ~ 475 pixels East and 1470 pixels South during the time the images where captured. In the image Up is North and Left is East.
  16. IC 2944, IC 2948 - Lambda Centauri Cluster, Running Chicken Nebula in the constellation Centaurus by Mike O'Day ( 500px.com/MikeODay ). Open cluster and emission nebula in the southern sky beside the 3rd magnitude star, Lambda Centauri. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: RA 11h 39m, Dec -63 deg 27' Skywatcher Quattro 10" f4 Newtonian Skywatcher AZ Eq6 GT Mount Guiding: Orion Shortube 80 guidescope, Starshoot Autoguider, PHD2 Baader MPCC Mark 3 Coma Corrector..Nikon D300 (unmodified) Field of view (deg) ~ 1.35 x 0.90 Stack of 39 x 30sec images @ ISO800 24 Apr2014 (one of my first ever attempts at Astro Photography ) Re processed with Pixinsight on 13 Mar 2016
  17. The Southern Pinwheel Galaxy ( Messier 83, NGC 5236 ) in the constellation Hydra. Additional sub-images added ( 9 x 3 min @ ISO 200, no filter ) and colour balance tweaked to remove slight yellow/green tinge. The lower ISO and removal of the LP pollution filter has made it easier to bring out the subtle colours in the stars. ( click on image to see fuill size ) Messier 83 is a relatively large and bright spiral galaxy visible from southern and mid latitudes. Clearly visible is the central bar with its bright central bulge as well as multiple dark dust lanes and areas of nebulosity in the sweeping arms. At a distance of 15 Million light years, the Southern Pinwheel Galaxy, whilst close in astronomical terms, is too far away and hence way too small for my backyard telescope to resolve individual stars; so all of the stars that can be seen are in fact in the near foreground of the image and reside, like us, in the Milkyway Galaxy. Much harder to see are the many far more distant galaxies that look like tiny fuzzy stars in the image. The easiest of which are PGC 724536 and PGC 48132 that appear close together in the centre of the image just to the right of Messier 83. Both are edge on and look like tiny flying saucers. Details: Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2 software. Nikon D5300 (unmodified) 14bit NEF, Long Exp. NR on. 25 June 2016 - Hutech IDAS D1 filter, 17 x 4 min @ ISO 400 28 June 2016 - no filter, 9 x 3 min @ ISO 200 Pixinsight and photoshop. Links: https://500px.com/mikeoday http://photo.net/photos/MikeODay Edited June 27 by mike005
  18. From the album: Mike's Images

    NGC 6357 in Scorpius Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. UHC-S - 100 x 100 sec ISO800 (14bit NEF, Long Exp. NR on). Pixinsight and photoshop

    © Copyright Mike O'Day 2015 - all rights reserved

  19. The Rosette Nebula and Cluster ( NGC 2237 and 2244 ) in the constellation Monoceros edit: updated 30th Dec with improved colour balance and slightly increased brightness ... ...... original: ( please click / tap on image to see larger and sharper ) Still a work-in-progress really... with only 10 x 4min exposures for the main 'lights' before the clouds came over. I will try to add some more data when the moon has gone I am still experimenting with how to get the best out of the D7500. With the very warm nights ( low to mid 20s all night ) the 'warm pixels' are very noticeable so I reverted to my old practice of in-camera dark subtraction. This worked quite well and produced a nice smooth noise floor in the integrated images - albeit at the expense of more exposures. ................. Identification: The Rosette Nebula ( NGC 2237 ) is a large, circular emission nebula in the constellation Monoceros. It surrounds a cluster of hot, young stars known as the Rosette Cluster ( NGC 2244 ). ( SkySafari ) NGC 2237, 2244 Caldwell 49, 50 North is up. .................. Capture Details: Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1400mm f4.7 Mount: Skywatcher EQ8 Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 Camera: Nikon D7500 (unmodified) (sensor 23.5 x 15.7mm, 5568x3712 @ 4.196um pixels) Location: Blue Mountains, Australia Moderate light pollution ( pale green zone on darksitefinder.com map ) Capture ( 23 Dec 2017 ) 9 sets of sub-images with exposure duration for each set doubling ( 1s to 240s ) all at ISO400. 10 x 240s + 5 each @ 1s to 120s imaged ~ +/- 1.5hrs either side of meridian maximum altitude ~ 51.3 deg above north horizon Processing ( Pixinsight ) Calibration: master bias, master flat and in-camera dark subtraction Integration in 9 sets HDR combination Image Plate Solution =================================== Resolution ........ 0.633 arcsec/px ( full size image ) Rotation .......... 0.181 deg Focal ............. 1367.90 mm Pixel size ........ 4.20 um Field of view ..... 58' 59.4" x 39' 15.0" Image center ...... RA: 06 31 55.638 Dec: +04 56 30.84 ===================================
  20. The Great Barred Spiral Galaxy ( NGC 1365 ) in the constellation Fornax edit: new version with new long exposure data ( 52 x 240sec ) and better dark subtraction / dithering to remove streaks in the noise and amp glow. This also allowed for a greater stretch revealing more faint data in the galaxy and small faint fuzzies in the image .. The Great Barred Spiral Galaxy ( NGC 1365 ) in Fornax ( please click / tap to see larger ) and below I have added a 100% crop of new version: ........ original image: NGC 1365 ( please click / tap on image to see larger ) ............... The Great Barred Spiral Galaxy ( NGC 1365 ) in the Constellation Fornax Below the equator, not seen from much of the Northern hemisphere, NGC 1365 passes very nearly directly overhead an observer situated near Cape Town, as Sir John Herschel was in November of 1837, or near Sydney, as I was, almost exactly 180 years later, when I photographed this “remarkable nebula” that is numbered 2552 in his book of observations from the Cape. Not called a “nebula” now, of course, this striking object is one of the nearest and most studied examples of a barred spiral ( SB ) galaxy that also has an active galactic nuclei resulting in its designation as a Seyfert galaxy. At around 60 M light years from Earth, NGC 1365 is still seen to occupy a relatively large area ( 12 by 6 arc minutes ) due to its great size; at some 200,000 light years or so across, NGC 1365 is nearly twice as wide as the Milky Way and considerably wider than both the Sculptor and Andromeda galaxies. This High Dynamic Range ( HDR ) image is built up from multiple exposures ranging from 4 to 120 seconds with the aim of capturing the faint detail in the spiral arms of the galaxy whilst also retaining colour in the brightest star ( the orange-red 7th magnitude giant, HD 22425 ). Also, scattered throughout the image, and somewhat more difficult to see, are numerous and far more distant galaxies with apparent magnitudes of 16 to 18 or greater. Mike O'Day ................. Identification: The Great Barred Spiral Galaxy New General Catalogue - NGC 1365 General Catalogue - GC 731 John Herschel ( Cape of Good Hope ) # 2552 - Nov 28, 29 1837 Principal Galaxy Catlogue - PCG 13179 ESO 358-17 IRAS 03317-3618 RA (2000.0) 3h 33m 37.2 s DEC (2000.0) -36 deg 8' 36.5" 10th magnitude Seyfert-type galaxy in the Fornaux cluster of galaxies 200 Kly diameter 60 Mly distance .................. Capture Details: Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1400mm f4.7 Mount: Skywatcher EQ Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 Camera: Nikon D7500 (unmodified) (sensor 23.5 x 15.7mm, 5568x3712 @ 4.196um pixels) Location: Blue Mountains, Australia Moderate light pollution ( pale green zone on darksitefinder.com map ) Capture ( 22 Nov 2017 ) 6 sets of sub-images with exposure duration for each set doubling ( 4s to 120s ) all at ISO400. 70 x 120s + 5 each @ 4s to 60s total around 2.5hrs Processing ( Pixinsight ) Calibration: master bias, master flat and no darks Integration in 6 sets HDR combination Image - Plate Solution ========================================== Resolution ........ 1.328 arcsec/px Rotation .......... -0.008 deg ( North is up ) Field of view ..... 58' 8.6" x 38' 47.5" Image center ...... RA: 03 33 41.182 Dec: -36 07 46.71 ==========================================
  21. Re-processed to bring out more stars and tweak the colours again ... NGC 104 ( also known as 47 Tucanae ) alongside the far more distant NGC 121 in the constellation Tucana by Mike O'Day ( https://500px.com/MikeODay ) NGC 104 - 47 Tucanae, is the second largest Globular Cluster in the sky ( after Omega Centauri ). Only visible from lower latitudes, it was not recorded by European observers until Nicholas de Lacaille did so whilst visiting South Africa in 1751. Containing millions of stars and appearing about the size of the full moon, 47 Tucanae is in fact approximately 214 light years in diameter and around 15,000 light years from Earth. The smaller cluster, NGC 121, appears as a companion to 47 Tucanae but is in fact of similar size, more than ten times farther away at around 200,000 light years and belongs to one of the Milkyway's dwarf galaxies, the Small Magellanic Cloud . Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: NGC 104 - RA 00h 24.1m, Dec -72 deg 5'. NGC 121 - RA 00h 268.1m, Dec -71 deg 31'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher Quattro 10" f4 Newtonian Skywatcher AZ Eq6 GT Mount Guiding: Orion Shortube 80 guidescope, Starshoot Autoguider, PHD2 Baader MPCC Mark 3 Coma Corrector Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90 Combination of 66 images ranging from 25 to 200 sec @ ISO400 16 Oct 2015 Pixinsight Previous version in post ...
  22. Another starscape from down under - this time the Pearl Cluster ... ( click on image to see full size ) The Pearl Cluster in constellation Centaurus ( NGC 3766 ) by Mike O'Day ( 500px.com/MikeODay ). The Pearl Cluster, visible from the Southern Hemisphere, shimmering like a pearl to the naked eye, is an open cluster of mostly young blue stars approximately 5500 light years from Earth. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: NGC 3766 RA 11h 37m, Dec -61deg 41' Skywatcher Quattro 10" f4 Newtonian Skywatcher AZ Eq6 GT Mount Guiding: Orion Shortube 80 guidescope, Starshoot Autoguider, PHD2 Baader MPCC Mark 3 Coma Corrector Hutech IDAS D1 filter Nikon D5300 (unmodified) Field of view (deg) ~ 1.35 x 0.90 Combination of 55 images 30 sec @ ISO400 Pixinsight
  23. Hi all I finally had a few hours without clouds and managed to capture Eta Carinae before having to turn in at a reasonable time on a work night. The sky was clear of clouds but the high humidity we have been having had a big impact on seeing and on the reflection of the lights from the nearby town. I also captured some shorter subs with the aim of 'filling in' the burnt out stars but I struggled to get acceptable results. The image below is just from the 2 min subs. NGC 3372 Eta Carinae Nebula (RA 10:44:22.47 - Dec -59 56' 36.5"). Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT (on Pier) Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S (Nebula) filter, Nikon D5300 (unmodified), Long Exp Noise Reduction on, 12bit NEF, UHC-S 15 x 120 sec ISO800. PixInsight & Photoshop 19 March 15
  24. Omega Nebula in Sagittarius ( Messier 17 , NGC 6618 ) ( click on image to see larger ) Omega Nebula in Sagittarius ( Messier 17, NGC 6618 ). Visible to the naked eye the Omega Nebula (also known as the Swan, Horseshoe or Lobster Nebula) M17 is in the Milkyway and is aound 4200 light years distance from Earth. Links: 500px.com/MikeODay photo.net/photos/MikeODay Details: RA 18h 22m, Dec -16deg 10'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion Short Tube 80mm guide scope & auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'Nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. 37 x 100 sec ISO800. Pixinsight & Photoshop 14 August 2015 re-processed 8 Aug 2016 with current workflow.
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