Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  HD96717  ·  HD97302  ·  HD97455  ·  M 108  ·  M 97  ·  NGC 3556  ·  NGC 3587  ·  NGC 3594  ·  Owl Nebula  ·  PK148+57.1
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M97 / Owl Nebula, Jan Beránek
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M97 / Owl Nebula

Getting plate-solving status, please wait...
M97 / Owl Nebula, Jan Beránek
Powered byPixInsight

M97 / Owl Nebula

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Description

There were two rare clear nights earlier this week, but the Moon was already very bright. So i was choosing a narrowband object close to the zenith - and decided to go for the M97, aka Owl Nebula. The M108 "Surfboard" galaxy is not very visible, due to the data only being captured in the two narrow spectral lines of hydrogen and oxygen. When weather allows, i will try to add L and/or RGB data.

I do appreciate that Siril offers the option to map the narroband data directly to their respective real colors, such as the O-iii to the turquoise shade corresponding to its wavelength of 500.7 nm. There are many photos that, as a result of conventional processing and SCNR, move the color of ionized oxygen to blue, which is actually wrong.

Oiii-line.jpg

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M97 / Owl Nebula, Jan Beránek

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Messier catalogue