Hemisphere:  Southern  ·  Constellation: Dorado (Dor)  ·  Contains:  IC 2105  ·  IC 2111  ·  IC 2117  ·  IC 2128  ·  IC 2145  ·  NGC 1651  ·  NGC 1673  ·  NGC 1676  ·  NGC 1693  ·  NGC 1695  ·  NGC 1696  ·  NGC 1697  ·  NGC 1698  ·  NGC 1702  ·  NGC 1704  ·  NGC 1711  ·  NGC 1712  ·  NGC 1714  ·  NGC 1715  ·  NGC 1718  ·  NGC 1727  ·  NGC 1731  ·  NGC 1732  ·  NGC 1733  ·  NGC 1734  ·  NGC 1735  ·  NGC 1736  ·  NGC 1737  ·  NGC 1743  ·  NGC 1745  ·  And 261 more.

Image of the day 09/08/2019

Getting plate-solving status, please wait...
    A Giga-Pixel LMC, 



    
        

            Wei-Hao Wang
    Powered byPixInsight

    A Giga-Pixel LMC

    Image of the day 09/08/2019

    Getting plate-solving status, please wait...
      A Giga-Pixel LMC, 



    
        

            Wei-Hao Wang
      Powered byPixInsight

      A Giga-Pixel LMC

      Imaging Telescopes Or Lenses
      Takahashi TOA 150
      Imaging Cameras
      Pentax 645z Mod
      Mounts
      Takahashi EM-400 Temma2
      Filters
      H alpha
      Accessories
      Takahashi TOA 67 Flattener · Takahashi TOA 645 Reducer F5.6
      Software
      PixInsight · Starnet ++ · RegiStar · Photoshop CC
      Guiding Telescopes Or Lenses
      SharpStar 50 ED
      Guiding Cameras
      ZWO ASI290MM Mini

      Acquisition details

      Dates:
      Feb. 1, 2019 ·  Feb. 12, 2019
      Frames:
      217x300" (18h 5') ISO1600
      H alpha: 91x480" (12h 8') ISO1600
      Integration:
      30h 13'
      Avg. Moon age:
      16.73 days
      Avg. Moon phase:
      27.76%
      Bortle Dark-Sky Scale:
      1.00

      RA center: 05h21m07s.48

      DEC center: -68°5405.2

      Pixel scale: 3.598 arcsec/pixel

      Orientation: -0.772 degrees

      Field radius: 5.639 degrees

      More info:Open 

      Resolution: 7620x8325

      Locations: Avon Valley, York, Western Australia, Australia

      Data source: Traveller

      Description

      This is a 20-frame mosaic, and one of my most ambitious projects. The exposures were taken during the 12 nights between Feb 1 and Feb 12 this year in Western Australia. Previously I uploaded a few LMC pictures from this trip, taken with various optics from 85mm to 500mm focal lengths. All these previous pictures were meant to provide registration reference and gradient removal reference for this final large mosaic.

      The regular RGB exposures have a total integration of 18.08 hr. Each of the 20 mosaic panels contains 50 minutes of integration, with the Tarantula region having substantially more integration to enhance S/N.

      The H-alpha exposures were made as a 20-frame mosaic using the same optical setup as the RGB exposures, plus a 12-frame mosaic using the focal reducer instead of the flattener. The distribution of exposure is relatively even in the H-alpha case.

      The original image has 1.01 giga pixels. The one uploaded here is a 1/4 reduction, to avoid overwhelmingly large file size. To see a higher-resolution image, you may take a look at this Gigapan one:

      http://www.gigapan.com/embeds/cvqQTtTFEvk/

      which is a 2/3 reduction.

      Comments

      Sky plot

      Sky plot

      Histogram

      A Giga-Pixel LMC, 



    
        

            Wei-Hao Wang

      In these public groups

      Images of Taiwan
      Deep Sky Mosaics