The Eye of Sauron - NGC 4151 & NGC 4145 in Canes Venatici

The Eye of Sauron - NGC 4151 & NGC 4145 in Canes Venatici

NGC 4151 & NGC 4145

NGC 4151 and NGC 4145 are a spectacular galactic pair in the constellation Canes Venatici!!!

NGC 4151 is a well-known Seyfert galaxy located in the constellation Canes Venatici, about 43 million light-years away. It's one of the closest and brightest active galactic nuclei (AGN), often referred to as a "mini-quasar." At its core lies a supermassive black hole that actively accretes matter, emitting strong radiation across the electromagnetic spectrum. Due to its brightness and proximity, NGC 4151 is extensively studied to understand black hole activity and galaxy evolution.

NGC 4145 is a barred spiral galaxy, also in the constellation Canes Venatici, roughly 68 million light-years from Earth. It features loosely wound spiral arms and an extended bar structure. Unlike NGC 4151, NGC 4145 does not have an active nucleus and is primarily notable for its structure and ongoing star formation. It's considered a more "typical" spiral galaxy without significant AGN activity.

Awarded Astronomical Picture of the Day (APOD) on Apod GrAG

Awarded Top Pick

on Astrobin

Astronomical Picture of the Day (APOD) on APOD BRASIL

Image Details

Date

March 27 - April 7, 2025

LOCATion

Hannover (Germany)

Sky Quality

Bortle 5

Telescope

Skywatcher 200/1000 @1000mm f/5
Skywatcher 200/1000 @750mm f/3.75

Mount

Skywatcher EQ6-R Pro

Main Cameras

ZWO ASI 2600 MC Pro
Gain 100, Offset 18, -10°
TS 2600 MP
Gain 100, Offset 200, -10°

Focuser

ZWO EAF

Filter

Baader UV/IR-Cut Filter
Antlia EDGE H-alpha 4.5nm

Exposure

RGB: 1909 × 60″ (31h 49′)
Ha: 150 x 120‘‘ (5h)
Total: 36h 49‘

Guiding

ZWO ASI 120MM, PHD2

Calibration

Flats, Darks, Darkflats

Software

N.I.N.A., EQMod

Processing

Astropixelprocessor, Photoshop, Pixinsight

Corrector

Starizona nexus 0.75
TS-Optics TS GPU 1.0

Gallery

ALL · NEBULA · GALAXIES · CLUSTERS · COMETS · MOON · OTHER

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Nebula

NGC 6914

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Nebula

IC 447

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Nebula

Interstellar Shells

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Nebula

Orion Nebula

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Galaxy

Regulus & Dwarf Galaxy

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Nebula

Sh2-140

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Nebula

Sh2-187

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Galaxy

NGC 2403

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Nebula

NGC 654

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Nebula

Coathanger, Loch Ness a.o.

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Nebula

Ghost of Cassiopeia

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Galaxy

Bode's Galaxy

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Nebula

Butterfly Nebula (IC 1318)

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Galaxy

NGC 3184

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Cluster

M 38 in HaRGB

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Comet

Comet C/2022 E3 (ZTF)

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Nebula

NGC 7822

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Galaxy

Pinwheel Galaxy

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Nebula

Cone Nebula

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Other

Aurora

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Galaxy

NGC 4151 & 4145

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Nebula

Cave Nebula

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Galaxy

NGC 4725, 4747 & 4712

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Nebula

The Crescent Nebula

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Nebula

Lion Nebula

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Cluster

M 13

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Nebula

Horsehead Nebula (SHO)

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Cluster

M 35 & NGC 2158

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Nebula

Sh2-134 Widefield

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Galaxy

NGC 5033 & Friends

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Nebula

Clamshell Nebula

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Nebula

The Dark Mermaid

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Nebula

Loch Ness Nebula

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Nebula

Heart & Soul Nebula

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Nebula

Iris Nebula

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Nebula

Elephant's Trunk Nebula

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Galaxy

NGC 3718

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Nebula

Flaming Star Nebula

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Nebula

IC 410

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Galaxy

Andromeda Galaxy

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Galaxy

Leo Triplet

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Nebula

Jellyfish Nebula

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Cluster

M 3

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Cluster

h and χ Persei (HaRGB)

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Nebula

VDB 14 & 15

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Nebula

Northamerica Nebula

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Galaxy

M 106

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Nebula

Sh2-120 & NGC 7031

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Cluster

NGC 188

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Nebula

Tulip Nebula

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Galaxy

Markarian's Chain

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Nebula

Wizard Nebula

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Nebula

Bubble & Lobster Claw Nebula

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Moon

Copernicus

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Moon

Mare Imbrium

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Cluster

M 53 & NGC 5053