deeplook.at
Messier 45 wide field

Astrophotography from Ursa Major Observatory @ ROSA

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deeplook.at
deeplook.at
2017-11-17
iOptron Sky Tracker
83x1 min ISO 1600
1h 23min
Camera:
Nikon D800
Image acquisition by CEDIC team (Markus Blauensteiner, Bernhard Hubl, Christoph Kaltseis) Image processing by Markus Blauensteiner
Nikon AF-S Nikkor 85mm f/1.8G @ f/3.2
Open star cluster (I3r) with reflection nebula
Tau
110’
1.6 mag
440 Ly
The Pleiades nebulae are blue-colored, which indicates that they are reflection nebulae, reflecting the light of the bright stars situated near (or within) them. Physically, the reflection nebula is probably part of the dust in a molecular cloud, unrelated to the Pleiades cluster, which happens to cross the cluster's way. It is not a remainder of the nebula from which the cluster once formed.