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Owl Nebula and Messier 108 | by infinitalavita
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Owl Nebula and Messier 108

Constellation: Ursa Major.

Session: 04 Feb 2020.


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Messier 97


The Owl Nebula (also known as Messier 97, M97 or NGC 3587) is a planetary nebula located approximately 2,030 light years away in the constellation Ursa Major. It was discovered by French astronomer Pierre Méchain on February 16, 1781. When William Parsons, 3rd Earl of Rosse, observed the nebula in 1848, his hand-drawn illustration resembled an owl's head. It has been known as the Owl Nebula ever since.


Messier 108


Messier 108 (also known as NGC 3556) is a barred spiral galaxy in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 or 1782. From the perspective of the Earth, this galaxy is seen almost edge-on.


This galaxy is an isolated member of the Ursa Major Cluster of galaxies in the Virgo supercluster. It has a morphological classification of type SBbc in the de Vaucouleurs system, which means it is a barred spiral galaxy with somewhat loosely wound arms. The maximum angular size of the galaxy in the optical band is 11′.1 × 4′.6, and it is inclined 75° to the line of sight.


Source: Messier 97 Wikipedia | Messier 108 Wikipedia



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

• Mount: Skywatcher N-EQ6 Pro (mod).

• Filters: IDAS LPS D1 (50,8mm).

• Accessories: QHYCCD QHYCFW-2-M motorized filter wheel, Primalucelab Sesto Senso, Primalucelab Eagle 3S.

• Camera: QHY163C color camera.


Lights (IDAS LPS D1): 160x60s | binning 1x1 | Gain 60 | Offset 30 | cooled - 20°c.


Integration: 2.63 hours.

Correction: Darks, Flats, Bias


Skies quality: Bortle 5/10, SQM 19.55.

Setup sampling: 1,74 arcsec/pixel.


Notes: Cropped a little bit, light polluttion, moon at 75%.


Softwares: Pixinsight, Adobe Photoshop.


© • Cristian Cestaro

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Taken on February 4, 2020