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Messier 13 (Luminance) | by infinitalavita
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Messier 13 (Luminance)

Constellation: Hercules.

Session: 31 May 2019.


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Messier 13 (M13), also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules.


M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.


M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is a red giant, the variable star V11, with an apparent visual magnitude of 11.95. M13 is 25,100 light-years away from Earth.


Source: Wikipedia



• Optics: Takahashi FSQ-85EDX super apo (quadruplet 85/450).

• Mount: Skywatcher N-EQ6 Pro.

• Filters: Astronomik L (36 mm), Optolong L-PRO.

• Accessories: QHYCCD QHYCFW-2-M motorized filter wheel, Primalucelab Sesto Senso .

• Camera: QHY163M mono camera.


Lum (Optolong L-PRO): 30x120s | binning 1x1 | Gain 60 | Offset 30 | cooled - 20°c.


Integration: 1 hour.

Correction: Darks, Flats, Bias


Notes: light polluttion, clouds, luminance.


Pixinsight, Adobe Photoshop.


© • Cristian Cestaro

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Taken on May 31, 2019