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Found 9 results

  1. The Lagoon Nebula ( Messier 8, NGC 6523 ) in the constellation Sagittarius ( Please click/tap on image to enlarge page ) ------------ Link to image on Flickr
  2. A blog by Mike O'Day ----------------- 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 create this blog to share 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. ----------------- ----------------- Higher resolution versions of the images in the scrapbook can be found in following galleries Mike's Images or flickr.com/photos/mike-oday 500px.com/MikeODay photo.net/photos/MikeODay
  3. The Sculptor or Silver Coin Galaxy ( NGC 253 ) in the Sculptor constellation - re-processed from the original subs The Sculptor Galaxay ( NGC 253 ) ( Please click / tap on image to see larger and sharper ) .................... 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. Catalogue location: RA 00 48 23, DEC -25 11 52. From Image Solver: Image centre: RA 00 47 33.4 Dec. -25 17 11.1 Focal length: 1008.5 mm Field of view: 1d 19' 2.2" x 53' 0.3" 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. November 4, 2016 re-processed from original subs ( including Photometric Colour Calibration ) - September 9, 2017 ........... Details of Sculptor Galaxy from SkySafari for the 4th of November 2016 around 10pm local time ............. Annotated version ( using Pixinsight ImageSolver and Annotation scripts ) Sculptor Galaxy ( NGC 253 ) - annotated The cyan tags ( 35 or so ) relate to galaxies recorded in the Principal Galaxies Catalogue. The white tags are brighter stars as recorded in the Tycho-2 Catalogue. The number beneath is the magnitude of the referenced star. .......... Link to previous version below ...
  4. NGC 104 ( also known as 47 Tucanae ) and NGC 121 in the constellation Tucana ( Please click/tap on image to enlarge page ) ------------ Link to image on Flickr
  5. War and Peace in Scorpius ( NGC 6357 ) ( Please click/tap on image to enlarge page ) ------------ Link to image on Flickr
  6. Hi - it used to be the case that astrophotographers using DSLRs generally preferred Canon technology to Nikon because of the lower noise Canon sensors. However benchmark tests with organisations like DSomark.com seem to favour many Nikon cameras over Canon and in some of the tests I've seen certainly some of the full frame Nikons appear to deliver images with a lot less noise. If we are focussed on recovering detail in the shadows in post production, much the same as "daylight" photographers, then is Nikon now leading Canon or are there other factors to take into account. Thanks in anticipation of your help.
  7. Ptolemy's Cluster in the constellation Scorpio ( Messier 7, NGC 6475 ) ( Please click/tap on image to enlarge page ) ------------ Link to image on Flickr
  8. The Fighting Dragons of Ara ( NGC 6188 ) ( Please click/tap on image to enlarge page ) ------------ Link to image on Flickr
  9. Spiral Galaxy NGC 6744 in the constellation Pavo ( Please click/tap on image to enlarge page ) ------------ Link to image on Flickr
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