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Haylz

Hello from the West Midlands, UK

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  • Similar Content

    • By Hairy Gazer
      I read a comment made on here the other day about the maximum magnification you can realistically use in UK skies (250x apparently). Therefore I was wondering what everyone else thinks this is, especially for you guys with 16" plus, apertures.
      I'm still fairly new to this game (only being observing for about 7 months), and only have a 5" Newt at the moment (but am about to replace with a 10" Dob) so I don't get any higher than 159x (6.3 mm).
       
    • By MikeODay
      A new High Dynamic Range image of the Sculptor Galaxy ( NGC 253 ) captured over a number of nights in mid-September 2017 and processed with PixInsight using the DrizzleIntegration and PhotometricColorCalibration tools.

      The Silver Coin or Sculptor Galaxy ( NGC 253 ) in the Sculptor constellation.
      ( please click / tap on image to see larger and sharper ) 
      On the 23rd of September 1783, sitting before her telescope in the field behind the house she shared with her brother William at Datchet, near Slough in the south of England, Miss Caroline Herschel "swept" the sky searching for new comets and never before seen star clusters and nebulae.   On this occasion, way down in the sky, not far above the Southern horizon, in an area of the southern sky that Nicolas de Lacaille had called the “Apparatus Sculptoris” or “the sculptor’s studio", Miss Herschel saw and noted down a very bright and large nebula where one had never before been recorded.  This event was later recognised by her brother, Sir William Herschel, as the discovery, by Caroline Herschel, of the nebula he listed in his catalogue as H V.1.   In later years, her 'beloved nephew', Sir John Herschel, William's son, would record this 'nebula' as entry # 138 in his General Catalogue of Nebulae and Clusters of Stars ( eventually becoming the 253th entry in the New General Catalogue, NGC 253 ).
      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.
      ........
      More information on the discovery of the Sculptor Galaxy by Miss Caroline Herschel, as well as the later observations by both Sir William and Sir John Herschel, can be found in my  Stargazerslounge blog, “The Sculptor Galaxy ( NGC 253 )”
      .........
      This image was captured over a number of nights in the middle of September 2017 and processed on the 23rd; exactly 234 years from the day of its discovery by Caroline Herschel.  
      With over 18 hours of total exposure, this HDR image attempts to capture the huge range of brightness levels; from the brightest stars and the core of the galaxy through to the numerous 'tiny' galaxies scattered throughout the image ( the total magnitude range is from around mag 8.8, for the brightest star, to 22+ for the faintest stars and galaxies visible in the image).
      Mike O'Day
      ......................
      Capture Details:
      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 EQ8
      Guiding: 
      TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2
      Camera:Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels)
      Location: Blue Mountains, Australia 
      Moderate light pollution ( pale green zone on darksitefinder.com map )..
      Capture ( 16, 17, 19,20,22 Sept. 2017 )
      8 sets of sub-images with exposure duration for each set doubling ( 2s to 240s ) all at ISO800
      273 x 240s + 10 each @ 2s to 120s
      total around 18hrs 
      Processing
      Calibration: master bias, master flat and no darks.
      Drizzle Integration in 8 sets.
      HDR combination 
      PhotometricColorCalibration
      Pixinsight & Photoshop
      23 Sept. & 8 Oct 2017
      Image Plate Solution ( this cropped image )
      ===============================================
      Resolution ........ 1.324 arcsec/px
      Rotation .......... -180.00 deg ( South ^, East > )
      Field of view ..... 57' 57.5" x 38' 40.1"
      Image center ...... RA: 00 47 32.809  Dec: -25 17 04.48
      ===============================================
      ....................
      Designations and alternative names for the Sculptor Galaxy:

      CH10  ( Caroline Herschel # 10 )
      H V.1  ( William Herschel,  Class V ( very large Nebulae ) # 1  )
      H 61, H 2345  ( John Herschel observations identifiers )
      GC 138.   ( John Herschel’s - A General Catalogue of Nebulae and Clusters of Stars # 138 )
      NGC 253  ( John Herschel’s catalogue updated by Dreyer - The New General Catalogue of Nebulae and Clusters of Stars # 253 )
      Caldwell 65
      Leda 2789
      ESO 479-29
      Sculptor Galaxy
      Silver Coin Galaxy
      Silver Dollar Galaxy
      ..................
       

      Annotated image of the Sculptor Galaxy ( NGC 253 ) - showing the brighter stars ( from the Tycho-2 catalogue ) as well the galaxies recorded in the Principal Galaxies Catalogue ( PGC ).  I have yet to complete identifying and annotating the very large number of ‘tiny’ galaxies in the image.
      ( please click / tap on image to see larger and sharper )
       
      .........
    • By watevacoward
      Hi,
      I am new to star gazing and still deciding on what beginners scope  to buy (see my previous post here).
      I live in Staffordshire, UK and was woundering if there are any groups/clubs that welcome new comers to join. I believe joining a group of 'fellow' stargazers would help take me from a mere novice to understanding all of these terms and setups.
      Are there any in my local area? If not in the Staffordshire area, Cheshire-east (Congleton/Macclesfield) is also a good area for me.
      Thanks.
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