When is the best time to observe IC 1904?

IC 1904 is best observed from October through December, with peak visibility during November when it transits around midnight in the Northern Hemisphere.

Where is IC 1904 located in the sky?

IC 1904 lies in the constellation Fornax at right ascension 03h 15m and declination -30° 42′.

What telescope do I need to see IC 1904?

At magnitude 13.6, IC 1904 is a challenging target that needs at least an 8-inch (200 mm) telescope and dark skies.

IC 1904 — Galaxy in Fornax

Galaxy Fair (39/100)

Barred Spiral

Magnitude 13.6^m Galaxy Fornax (For) Visible

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1Properties

Magnitude 13.57

Angular Size 1.4′ × 0.6′

Position Angle 102°

Distance 216.33 million ly

Galaxy Type Barred Spiral (SBab)

Description

eF, vS, mE 80deg , stell N

Position & Identifiers

RA 03h 15m 00.8s

Dec -30° 42' 28.8"

Constellation Fornax (For)

Catalog IC 1904

2How easy to spot?

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	V. hard	V. hard	V. hard
150 mm Newton 150mm Newt.	Hard	V. hard+	V. hard+
Celestron C8 (203 mm SCT) C8 203mm	Hard+	Hard	V. hard+

Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

Medium on Seestar S50

3Visibility

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Best season Oct – Dec (peak: Nov)

4 Eyepiece View

Telescope Eyepiece

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125x TFOV: 0.4° Lim. mag: 13.6

Seeing Bortle

IC 1904 · 1.4′×0.6′ · N up, E left

5 Best Magnification

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6 Surface Brightness

7 Morphology Decoder

8 Inclination & True Shape

9 Redshift

10 Size Comparator

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11

Light Travel Time Machine

12

Relativistic Travel

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

Dalim

HIP 14879; Alpha Fornacis

Easy

Colorful double, sep 5.5″

Double Star mag 3.87 1.8° Fornax

NGC 1340

Easy

Elliptical galaxy

Galaxy mag 10.37 2.9° Fornax

NGC 1344

Easy

Galaxy

Galaxy mag 10.3 2.9° Fornax

NGC 1339

Hard+

Elliptical galaxy

Galaxy mag 13.0 3.2° Fornax

IC 1919

Hard+

Elliptical galaxy

Galaxy mag 12.94 3.2° Fornax

NGC 1360

Medium+

Planetary nebula — try an OIII filter

Planetary Nebula mag 9.40 6.3° Fornax

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