Celestial hemisphere:  Southern  ·  Constellation: Corona Australis (CrA)  ·  Contains:  12.97  ·  250 Bettina  ·  Alfecca Meridiana  ·  Corona Australis  ·  IC 4812  ·  NGC 6723  ·  NGC 6726  ·  NGC 6727  ·  NGC 6729  ·  NGC 6794  ·  Part of the constellation Corona Austrina (CrA)  ·  The star αCrA  ·  The star βCrA  ·  The star γCrA  ·  The star εCrA  ·  alf CrA  ·  bet CrA  ·  eps CrA  ·  gam CrA

Image of the day 06/29/2018

    Corona Australis Dust Cloud, Wei-Hao Wang
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    Corona Australis Dust Cloud

    Image of the day 06/29/2018

      Corona Australis Dust Cloud, Wei-Hao Wang
      Powered byPixInsight

      Corona Australis Dust Cloud

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      Description

      This is a three frame mosaic.

      Ver.A is the original 3-frame mosaic made with TAK Epsilon 180ED.

      Ver.B is a wide-field image taken with Sigma APO 180mm/F2.8. It serves as the registration reference for the mosaic, as well as background reference for removing the background sky gradient in each mosaic panel.

      Ver.C (Final) incorporates this older image of mine:

      https://www.astrobin.com/77963/

      This helps to enhance the S/N and resolution in the R-CrA/NGC6723 region.

      Just for fun, this is the link to the film images for this region I made some twenty years ago:

      http://group.asiaa.sinica.edu.tw/whwang/old/gallery/picutres/R-CrA.html

      Comments

      Revisions

        Corona Australis Dust Cloud, Wei-Hao Wang
        Original
        Corona Australis Dust Cloud, Wei-Hao Wang
        B
      • Final
        Corona Australis Dust Cloud, Wei-Hao Wang
        C

      Sky plot

      Sky plot

      Histogram

      Corona Australis Dust Cloud, Wei-Hao Wang