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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

M13 - 17.8.2020 at 00.15 Kangasala Observation number 92956

Visibility Unclassified

Markku Lintinen, Tampereen Ursa

Here is my first deep sky shooting exercise. I used a pre-assembled astroberry distro. Somewhat surprisingly, the ASTAP stacking software included in the package did not even agree to open the RGB24 TIFF format that was in the default settings of the imaging software, so my stacking intentions remained next time.

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Additional information
  • Observation target
    • Deep space object
  • Designation
    • M13
    • Luokittelematon
  • Constellation
    • Hercules
  • Seeing
    • Average
  • Star clusters and asterisms
    • Globular cluster info

      Globular cluster is a ball-shaped group of thousand of stars. Typically it looks like a round fuzzy spot. With bigger instruments a part of the stars in the cluster can be seen as sepaterated.


      The globular cluster 47 Tucanae is located in Tucana. Image Arto Oksanen.


      The globular cluster M13 is in Hercules. Image Rauno Päivinen.


      The globular cluster M2 in Aquarius. Image Timo Inkinen.

Technical information

CPC925 + 0.63x Reducer / corrector + ASI385MC + Raspberry 4. Description software for oacapture in astroberry distro. Exposure time (10s in the log file, but there could also be 15s left in the variation), gain 360.

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