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Found 80 results

  1. Reprocessed to try to better balance the colours ... (previous version: http://stargazerslounge.com/topic/239687-eta-carinae-nebula/ )
  2. Conditions have been very poor down in Sydney for the last month (rain, clouds or 'darn' moon every night ) so no new images but at least I have plenty of time for lots of reprocessing ... This one was captured back at the beginning of the year and I'm still playing with it. Here I have been trying to get to grips with the HDR composition function in PixInsight. It is built up from four sets of around 20 images each at 4sec, 8sec, 30sec and 120sec all at ISO800 with my unmodified Nikon D5300. And this is the previous attempt. I think I prefer the composition, colours and contrast of the new version.
  3. A new target for me - the Running Chicken Nebula sits about halfway between the Southern Cross and the Eta Carina Nebula. IC2948 Running Chicken Nebula in Centaurus ( bright star is Lambda Cenauri) (RA 11h 39.6m - Dec -63deg 37.2'). Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT (on Pier) Orion auto guider - PHD2 (RA only - Dec ungiuded). Baader MPCC Mark 3 Coma Corrector, UHC-S (Nebula) filter, Nikon D5300 (unmodified), Long Exp Noise Reduction on, 14bit NEF, 13 x 300 sec ISO 200. PixInsight & Photoshop 28 March 15
  4. Bright Nebula NGC 6188 and open cluster NGC 6193 in Ara Magnitude +5.19, RA 16h 41m 42s, Dec -48deg 48' 46" Approx. 3800 light years away Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount (on concrete pier) 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 - 32 x 180 sec ISO800 (14bit NEF, Long Exp. NR on). Pixinsight and photoshop 7 July 15 (processed 29 August 15) Other images: photo.net/photos/MikeODay 500px.com/mikeoday
  5. Ptolemy's Cluster in Scorpio ( Messier 7, NGC 6475 ). Visible to the naked eye as a small bright patch in the sky, this open cluster is around 980 light years away with around 80 stars within a area of 25 light years or so. Links: 500px.com/MikeODay photo.net/photos/MikeODay Details: RA 17h 54m, Dec -34deg 47'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector. Nikon D300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. 18 x 30 sec ISO800. 23 May 14 Reprocessed Pixinsight 8 Sep 2015 This was one of my first ever asto image captures taken shortly after I bought my scope. I reprocessed it today using Pixinsight. Here is the original version ...
  6. Update 16th June: I could not wait to tell people that I was just notified that my image of Omega Centauri will be published as a future NASA's Astronomy Picture of the Day ( APOD ) - my first ever I will update the thread when they publish. ................................. A deep look at Omega Centauri ( NGC 5139 ) This image is an attempt to look deeply into the the Omega Centauri globular cluster by using HDR techniques to record as many faint stars as I can whilst retaining colour and detail in the bright stars, including at the core ... ............. Reprocessed to bring out more faint stars and to produce a smother transition between brightness levels. New version ( 12 June 2017 ): Omega Centauri ( NGC 5129 ) ( please click / tap on image to see lager and sharper ) .......... Old version: Omega Centauri ( NGC 5129 ) ( please click / tap on image to see full size and sharper ) Image details: from www.nova.astrometry.net: Size: 58.6 x 39 arcmins, Centre: 13h 26 min 50.4 sec, -47deg 28' 39.1''. Orientation: up is -89.9 East of North ( ie. E^ N> ). Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1410mm f4.7. Mount: Skywatcher AZ Eq6 GT. Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 . Camera: Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels). No filter Long Exposure noise reduction off Location:. Blue Mountains, Australia. Moderate light pollution ( pale green zone on darksitefinder.com map ). Capture: 9 sets of sub-images with exposure duration for each set doubling ( 1s to 240s ) all at ISO800. Processing:. Calibration: master bias, master flat and no darks. Integration in 9 sets. HDR combination. Pixinsight May 2017
  7. Barred Spiral Galaxy NGC 6744 in Pavo NGC 6744 is a Milky Way like barred spiral galaxy in the constellation Pavo. Visible only from lower latitudes, the light we see now left this galaxy around 30 million years ago. Details: Spiral Galaxy NGC 6744 in Pavo. Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, no filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, 14bit NEF, Long Exp. NR on. 44 x 120sec 4th Sept 2016 Processed in PixInsight and finished off in Photoshop. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay
  8. The Silver Coin Galaxy ( NGC 253 ) in the Sculptor constellation - updated. 24th March 2017: New version that was reprocessed ( again ) to improve colour balance ... original version below ( colours are a little too yellow ) ( click on image to see full size ) The Silver Coin Galaxy ( NGC 253 ) in the Sculptor constellation ( aka the Silver Dollar or Sculptor Galaxy ). Caroline Herschel in 1783 was the first to recordthis bright ‘nebula’ in an area of the southern sky that Nicolas de Lacaille had called the “Apparatus Sculptoris” or “the sculptor’s studio”. Whilst relatively close to us compared to the billions of far more distant galaxies in the Universe, the great size of the “Sculptor Galaxy” and the huge distances involved are still hard to comprehend. To put this into some perspective, the light that is just now reaching one edge of the great disc left the opposite edge when the Earth was in the grip of last great Ice Age 70,000 years ago and the light we now see has been travelling towards us for over 11 million years. Details: NGC 253 - "Silver Coin" or "Sculptor" galaxy. RA 00 48 23, DEC -25 11 52. Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion Short Tube 80mm guide scope & auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector & no filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. 20 x 180 sec ISO 800, long exp noise reduction on. Pixinsight & Photoshop. 4th November 2016 updated version 17 March 2017
  9. The Lagoon Nebula ( Messier 8, NGC 6523 ) in the constellation Sagittarious. ( click on image to see larger) The Laboon Nebula ( M8 ) is visible to the naked eye under dark skies from most latitudes except the far north. Seemingly covering an area about three times that of the full Moon, M8 actually covers an area somewhat greater than 110 light years and is around 4300 light years from Earth in the Sagittarius-Carina spiral arm of the Milkyway galaxy. ...... The frames for this image where taken back when I was very new to astrophotography and I was experimenting with camera settings. On this occasion I wanted to see if JPEG images might be easier to process - I was disappointed with the results. Now that I have a bit more knowledge and skill at processing I decided to have another attempt at trying to process the set because I liked the way the JPEG files had retained colour in the stars. I am reasonably pleased with the result; the faint detail in the nebula is not there but I quite like the colours in the centre and in the stars. Details: Messier 8, NGC 6523 - Lagoon Nebula Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount.Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector. Nikon D300 (unmodified). 80 x 30 sec ISO 1600 (JPEG) - 31 Aug 14. PixInsight and Photoshop. processed 13 August 2016 Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay
  10. The Eagle Nebula Messier 16 ansd Open Cluster NGC 6611 in the constellation Serpens. ( click on image to see larger ) M16 is around 7,000 light years distant from Earth in the Sagittarius-Carina spiral arm of our Milkyway galaxy and may be part of a larger structure that extends to and includes the Omega Nebula ( M17 ) in Sagittarius. Details: Eagle Nebula - Messier 16 ( IC 4703 ), Open Clusters - NGC 6611 and Trumpler 32. RA ~ 18h 19'm45s Dec ~ -13deg 46' 20" Skywatcher Quattro 10" f4 Newtonian telescope. 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. 35 x 180sec (1/3 before & 2/3 after zenith) 17 July 2015. PixInsight re-processed 21 Aug 2016.. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay
  11. Decided to take the plunge and replace my (very) old Fullerscopes 8.5" f6 Newtonian by a 12" Quattro (which at f4 has much the same focal length as the Fullerscopes). Turns out that I can't get anything much bigger in the observatory, so although an f5 12" would have been easier on coma etc, it would probably have hit the walls! It arrived in two parts - one box for the OTA (large enough to hide a person in) with secondary attached and one smaller one for the primary mirror (in its cell) and a pack of springs and screws. Seems I got the last one in OVL's warehouse, and it went 'missing' for a few days, so for a while it wasn't clear if there were any at all in the warehouse! Turned out someone had 'put it aside' then promptly forgotten about it. Anyway it turned up only a few days late in the end. Strangely there were no instructions in either box, so attaching the mirror to the OTA required a bit of guesswork - turns out you need to unscrew the white 'collar' at the end of the OTA and attach this to the back of the mirror support, then man-handle the whole lot back into the OTA. The assembled beast is not exactly light, but it can be carried by one person, although attaching to my EQ8 was a bit of a struggle. Did a quick collimation with a laser, which showed the secondary was surprising well-aligned to the centre spot on the primary, which is just as well so far I have not been able to loosen either the centre screw on the secondary, or any of the three adjusting hex screws! No idea how Skywatcher have managed to get these so tight. Another slight issue is that I was planning to buy a Skywatcher Aplanatic coma corrector, but due to production difficulties none are expected in the country until the end of October. Anyway, in the meantime, here is the first light image of Albireo (28secs, ISO1600, Canon 1000D), cropped to hide the coma! NigelM
  12. From the album: Mike's Images

    Cat's Paw Nebula - NGC 6334 ( aka Bear Claw Nebula ) An emission nebula in Scorpius (near the scorpion's tail) RA 17h 25m 39.6s ; Dec -35deg 43' 48" . 7th August 2015. 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. 28 x 200sec (starting at zenith) no moon, 3deg C, 70%RH, moderate LP. PixInsight

    © Copyright Mike O'Day 2015 - all rights reserved

  13. From the album: Mike's Images

    Blue Moon - 31st July 2015 Skywatcher Quattro 10" f4 Newtonian ("full moon" dust cap in place). 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). ISO200, 14bit NEF, Long Exp. NR off. 487 sub exposures @ 1/50th Subs taken over 45min period covering Full Moon @ 10:42 UT (8.42pm local time). Processed using Registax and Photoshop

    © Copyright Mike O'Day 2015 - all rights reserved

  14. From the album: Mike's Images

    Cat's Paw Nebula - NGC 6334 ( aka Bear Claw Nebula ) An emission nebula in Scorpius (near the scorpion's tail) RA 17h 25m 39.6s ; Dec -35deg 43' 48" . 7th August 2015. 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. 28 x 200sec (starting at zenith) no moon, 3deg C, 70%RH, moderate LP. PixInsight

    © Copyright Mike O'Day 2015 - all rights reserved

  15. From the album: Mike's Images

    The Lagoon Nebula ( Messier 8, NGC 6523 ) in the constellation Sagittarius - by Mike O'Day ( https://500px.com/mikeoday ) The Laboon Nebula ( M8 ) is visible to the naked eye under dark skies from most latitudes except the far north. Seemingly covering an area about three times that of the full Moon, M8 actually covers an area somewhat greater than 110 light years and is around 4300 light years from Earth in the Sagittarius-Carina spiral arm of the Milkyway galaxy. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: Messier 8, NGC 6523 - Lagoon Nebula. also contains: NGC 6526 NGC 6530 NGC 6533 IC 1271 IC 4678 7SGR 9SGR Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D300 (unmodified) (14bit NEF). Field of view (deg) ~ 1.35 x 0.90. 20 x 120 sec ISO400. 26 x 30 sec ISO 1600. 23 x 240 sec ISO 200. PixInsight and Photoshop. 2 August 14 . re-processed 24 April 2016 to include the additional subs ( the first version only made use of the 23 x 240 sec ISO 200 subs ) and putting use the processing lessons I have learnt over the past year.

    © Copyright Mike O'Day 2016 - all rights reserved

  16. The Great Nebula in Orion ( Messier 42, NGC 1976 ) ( tap on image to see larger ) Scrapbook page ... Details: The Great Orion Nebula (Messier 42, Messier 43, NGC 1976 ) in the Orion Constellation RA 5 36 15, DEC -5 26 31 ( 2016.9 ) Skywatcher Quattro 10" f4 Newtonian telescope Skywatcher AZ Eq6 GT Mount Orion Short Tube 80mm guide scope & auto guider - PHD2 Baader MPCC Mark 3 Coma Corrector & no filter Nikon D5300 (unmodified) Field of view (deg) < ~ 1.35 x 0.90 long exp noise reduction on 45 x 120 sec ISO 400, 15 x 60 sec ISO 100, +various short exposures 3 to 15 sec to extend dynamic range for bright stars Pixinsight & Photoshop 28th November 2016
  17. Nebulae and Clusters in the North East Quadrant of the Small Magellanic Cloud ( Tucana Constellation ) ( Contains: NGC 292, 299, 306, 330, 346, 361, 371, 395, 411, 416, 422 & IC 1611, 1612, 1624, 1641 ). The Small Magellanic Cloud (SMC) is a "small" spiral galaxy about 7000 light years in diameter 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: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: Image centre ~ 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) Long exposure noise reuduction on Field of view (deg) ~ 1.35 x 0.90 38 x 200 sec ISO 800 over two nights Pixinsight & Photoshop 11 & 12 October 2015 (re-processed 9 Apr 2016 )
  18. Bright Nebula IC 4628 in the constellation Scorpius. ( a re-processed version can be found in a comment below - colour balance tweaked to add a little blue ) ( another re-processed version can be seen below - this time to increase the vibrance & saturation somewhat ( too much ? ) ( click on image to see full size ) IC 4628, called the Prawn Nebula by some, is an emission nebula in the far southern sky in the constellation Scorpius. Relatively faint, with a visual magnitude of +10, IC 4628 resides in a rich area of the Milkyway about 6000 light years from Earth. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: centre of image: RA 16h 57m 4s, Dec -40 deg 21' 52" (nova.astrometry.net)f ield of view: 80 x 53.3 arcmins 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 light pollution filter Nikon D5300 (unmodified) Long exposure noise reduction on 32 x 182 sec @ ISO800 (15 May 2016) Pixinsight
  19. Nearby spiral galaxy NGC 4945 in the constellation Centaurus. ( click on image to see full size ) ( This is an update of my image of NGC 4945 with an additional 22 x 360sec images at ISO400. ) NGC 4945 in the constellation Centaurus is a large spiral galaxy about the size of the Milkyway and around 13 million light years from Earth. It is shown here nearly edge-on and is accompanied in the image by a number of far more distant galaxies; the brightest of which is the 10th magnitude elliptical galaxy NGC 4976 (centre left of the image) which is around 30 million light years away. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: RA 13h 06.5m, Dec -49 deg 33.5' 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 light pollution filter Nikon D5300 (unmodified) Long exposure noise reduction on 10 x 200sec @ ISO400 (19 Mar 2016) 22 x 360sec @ ISO400 ( 1 May 2016) Pixinsight Includes: NGC 4945 ( mag +9.3 ) NGC 4945A ( mag +13.3 ) NGC 4976 ( mag +10.0 ) PGC 45001 ( mag + 14.1 ) PGC 45317 ( mag + 14.2 ) PGC 45373 ( mag + 18.0 ) PGC 479454 ( mag + 15.9 ) PGC 480158 (mag + 16.8 ) Previous version :
  20. The Helix Nebula ( NGC 7293, The Eye of God ) in the constellation Aquarius. ( click on image to see larger ) The visible remains of a star that died around 10,000 years ago, the Helix Nebula ( NGC 7293 ) is one of the closest and largest of the so-called planetary nebulae that are observable from Earth. Situated in the same arm of the Milkyway galaxy as ourselves, the Helix Nebula is around 650 light years away, is growing at a rate of over 100,000 kms / hour and is currently around 2.5 light years across. ............... 34 minutes (17 x 120 sec subs) unmodified DSLR from moderately light polluted skies up in the Blue Mountains, 100 kms west of Sydney - The moon is out now so I will have to wait a week or so to see if I can add to it to try to bring out more from the background. Details: RA 22h 30m 33.9s, Dec -20deg 44' 57.1"' Skywatcher Quattro 10" f4 Newtonian Skywatcher AZ Eq6 GT Mount Orion auto guider - PHD2 Baader MPCC Mark 3 Coma Corrector Nikon D5300 (unmodified) Field of view (deg) ~ 1.35 x 0.90 long exp. noise reduction on 17 x 120 sec ISO800 Pixinsight & Photoshop 12 August 2016. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay
  21. Barnard's Galaxy ( NGC 6822 ) in the constellation Sagittarius ( click on image to see larger ) Barnard's Galaxy is one of a number of dwarf galaxies relatively near to us in our Local Group of galaxies. Similar in structure to the Small Magellanic Cloud, Barnard's galaxy is thought to be about half the size and around eight times as far away at 1.6 M Light Years. Weather permitting I hope to add more subs to help bring the faint detail further out from the sky background. Details: Barnard's Galaxy ( NGC 6822 ). Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, no filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO400, 14bit NEF, Long Exp. NR on. 40 x 180sec (1/3 before & 2/3 after zenith) 25 Aug 16. Processed in PixInsight and finished off in Photoshop. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay
  22. Barnard's Galaxy ( NGC 6822 ) in the constellation Sagittarius ( final version - well, at least until I can get more data ) ( click on image to see larger ) Barnard's Galaxy is one of a number of dwarf galaxies relatively near to us in our Local Group of galaxies. Similar in structure to the Small Magellanic Cloud, Barnard's galaxy is thought to be about half the size and around eight times as far away at 1.6 M Light Years. Weather permitting I hope to add more subs to help bring the faint detail further out from the sky background. Details: Barnard's Galaxy ( NGC 6822 ). Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, no filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO400, 14bit NEF, Long Exp. NR on. 40 x 180sec (1/3 before & 2/3 after zenith) 25 Aug 16. Processed in PixInsight and finished off in Photoshop. re-processed to increase contrast and brightness of galaxy and a slight increase in overall sharpness. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay
  23. The Lagoon Nebula ( Messier 8, NGC 6523 ) in the constellation Sagittarius - by Mike O'Day ( https://500px.com/mikeoday ) ( click on image to see full size ) The Laboon Nebula ( M8 ) is visible to the naked eye under dark skies from most latitudes except the far north. Seemingly covering an area about three times that of the full Moon, M8 actually covers an area somewhat greater than 110 light years and is around 4300 light years from Earth in the Sagittarius-Carina spiral arm of the Milkyway galaxy. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: Messier 8, NGC 6523 - Lagoon Nebula. Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D300 (unmodified) (14bit NEF). Field of view (deg) ~ 1.35 x 0.90. 20 x 120 sec ISO400. 26 x 30 sec ISO 1600. 23 x 240 sec ISO 200. PixInsight and Photoshop. 2 August 14 . re-processed 24 April 2016 to include the additional subs ( the first version only made use of the 23 x 240 sec ISO 200 subs ) and putting use the processing lessons I have learnt over the past year. Here is the previous version:
  24. The Pearl Cluster in Centaurus ( NGC 3766 ) - re-processed version ( clouded in for days now so I've been looking back through my old images and seeing if I can improve them ) The Pearl Cluster is an open cluster of mostly young blue stars approximately 5500 light years from Earth that is only visible from the Southern Hemisphere and shimmers like a cluster of pearls. ( Tap / click here to see my scrapbook page for the Pearl Cluster ) Details: NGC 3766 - RA 11h 37m, Dec -61deg 41' Skywatcher Quattro 10" f4 Newtonian telescope 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 13 Feb 16 re-processed 4 Dec 16 Links:https://500px.com/MikeODayhttp://photo.net/photos/MikeODay..
  25. Re-processed to try to bring increase the brightness of the various nebulae and increase the contrast a little without futher blowing out the stars and adding too much noise ... orignial: Orion's Belt - centred on "Alnitak", is a 1.7 magnitude triple star 740 light years from Earth and appears at one end of the belt. The Flame nebula ( cat: NGC 2024 or Sharpless 2-277 ) ( lower centre left of the image) glows yellow-pink due to the ionising radiation that comes from Alnitak. Seen from Earth, the Flame nebula is behind Alnitak and around 80 light years further away from Earth. The Horsehead nebula ( cat: Barnard 33 ) ( centre right of the image ) is a dark dust and gas cloud that is only visible from Earth due to the backlight illumination and silhouetting caused by the bright pink glow from the ionised hydrogen gas in the emission nebula IC 434. The bright blue reflection nebula below and to the left of the Horsehead is NGC 2023. Details: Combination of two sessions over a year apart. 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, no filter. Nikon D5300 (unmodified). 14bit NEF, Long Exp. NR on. 18 Dec 2015. 21 x 20 sec ISO 800. 165 x 30 sec ISO 800. 13 x 60 sec ISO 800 . Baader UHC-S , 12bit NEF, Long Exp. NR on. 5 Oct 2014. 19 x 2min ISO400 Pixinsight Links:. https://500px.com/mikeoday http://photo.net/photos/MikeODay
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