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Found 80 results

  1. Hello, This is my first astrophotography with my own scope (and first light for this scope). I've always been fascinated with this galaxy, and it was my childhood dream to capture it. It finally happened ;-) You'll find all the technical details on the description on flickr. Overall it's the first light of my skywatcher Quattro 250mm/1000mm f4, NEQ6, with an unmodded Canon 6D. Integration time: 1h59 Processed with PixInsight. link to flickr for the full resolution and description:
  2. 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 ===================================
  3. 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 ==========================================
  4. 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.
  5. 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
  6. AKB

    Eastern Veil

    From the album: DSO

    Eastern Veil - first light with my new (second-hand) QHY8L - and my first ever colour image. Taken on 21 Sep, 2017 @ 23:15 ~ 24:00 QHY8L camera @ -5 C Quattro 8" with CC Avalon M-Uno mount 10 x 5 minutes, guided & dithered (with PHD2 / Nebulosity) FLATS, BIAS, Bad pixel map, de-Bayer, and a bit of stretching and saturation (also in Nebulosity.) It's somewhat cropped since the CC spacing was a bit wrong.
  7. 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
  8. I'm planing to delve deeper into AP - previously did only widefield with my DSLR - so after digging the internets for the past few days I decided to buy a fast newt along with all the additions that will be needed. This is what my current list looks like and some parts of it is what I need an advice about because there is more than one possible choice and I'm not sure what to pick. * NEQ6 (just to be a bit more future proof) * SW Quattro-8CF (I know that it will be more complicated to handle compared to something like 80ED because of collimation (probably needed each session?) but I'm more than willing to cope with that) * Coma corrector (?) - really not sure which one to buy, my current picks are either Baader MPCC Mark III or SW Aplanatic Coma Corrector. From what I've read, SW one seems to be better. I've also seen some good reviews of Paracorr but this one is over my budget * OAG (?) - I decided no to go for a guidescope because I really want to keep things compact as I'm going to transport whole setup from time to time, also possible flexure issues. Plus, I may consider getting SCT in the future, so I'd like to be able to reuse current setup with it. Here, I'm not sure which OAG to get. I will be imaging with my Canon 60D and, when budget allows, I'll upgrade to Atik 414EX. Would be cool to get something that would work with DSLR and won't have backfocus issues later, when used with filter wheel and CCD. * guider - Lodestar (I suppose it will be sensitive enough to be used with OAG?) What do you guys think about this kind of setup? Also, any advice on what coma corrector/oag should I get?
  9. Hi All, I'm now residing to the fact that the second hand RC i bought was a lemon, and i need to move on instead of pulling my hear out. So i'm looking at the Skywatcher MN190 Vs CF Quattro 10" and just wanted to get peoples views on the 2 scopes. I know everone will have their own views and i probably wont get a resourding answer either way, but still interested to get peoples feedback. Weight is not an issues as i have an EQ8, so weight can be discounted in the argument. Also cool down is not an issues as it will live permanently in my obs. What i Like about MN190 : Flat field and no need for coma corrector or flattner, Pretty Fast at F5, Easy to fit a direct replacement Feather touch Focuser without opening the tube, good optics providing sharp refractor like perfoamance. Good for visual as well as imaging. What I Like about the 10" Quattro : Very Fast @ F4 so great for Fickle british weather, Larger Aperture (10") So i guess it comes down how much more detail would the 10" Quatto resolve over the MN190 for a given exposure length, lets say 600 secs. Is the 10" & F4 optics of the Quattro going to make a huge difference or will it be marginal ? Also, when itcomes to collimation of the 2, which is likely to holid it collimation better ? Is the MN190 colllimated in the same way as a normal Netwtonian ? Many Thanks, Rich.
  10. 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..
  11. 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
  12. 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
  13. 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
  14. Ptolemy's Cluster in the constellation Scorpius ( Messier 7, NGC 6475 ) Scrapbook page ...
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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.
  23. 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
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