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Ursa Astronomical Association
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taivaanvahti(at)ursa.fi

Ursa Astronomical Association

Starry sky image - 13.9.2020 at 22.40 - 13.9.2020 at 23.15 Hyvinkää Observation number 93696

Visibility III / V

Timo Inkinen, Ursa (Etelä-Suomi)

I photographed the star Eta Cassiopeiae, a well-known binary star in Cassiopeia. This image is a traditional LRGB image with 30s of exposures 10 pcs / color channel (20min in total). The apparent brightnesses of this pair are 3.44 and 7.51 magnitudes and the distance from each other in the sky is 13 ", so this is distinguished by a pair of already quite moderate telescopes and magnifications. More information about this double star can be found even on these pages:

https://astronomynow.com/2019/12/13/go-hunting-for-colourful-winter-double-and-multiple-stars-in-cassiopeia/

https://nineplanets.org/achird/



More similar observations
Additional information
  • Observation target
    • Starry sky image
    • Keskitaso
  • Constellation
    • Cassiopeia
Technical information

Filmed with TMB 152/1200 LZOS lens tube and ZWO ASI183MM Pro camera, LRGB Astrodon filters in use. Image processing separately for both the background sky and the corner close-up box. PixInsight / PhotoShop.

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