IC 4605 — Reflection Nebula in Scorpius
Excellent (72/100)
Observe
1Properties
Magnitude
4.70
Angular Size
30.0′ × 15.0′
*7 in eF, vL neb
Querying SIMBAD database...
Position & Identifiers
2How easy to spot?
Sign in
and configure your equipment and default location to see a personalized row.
| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Medium+ | Medium+ | Medium+ |
| 150 mm Newton 150mm Newt. | Medium+ | Medium+ | Medium+ |
| Celestron C8 (203 mm SCT) C8 203mm | Medium+ | Medium+ | Medium+ |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
Easy
on Seestar S50
3Visibility
Set a location in User Settings to see visibility data.
Best season
Apr – Jun
(peak: May)
4
Filter Response Guide
5
Eyepiece View
Explore
6
Surface Brightness
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.
NGC 6144
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 9.1
1.1°
Scorpius
Rho Oph
HIP 80473; Rho Ophiuchi; 5 Ophiuchi
Easy double, sep 3.2″
Double Star
mag 5.02
2.0°
Ophiuchus
IC 4604
rho Oph nebula
Reflection nebula around a bright star
Reflection Nebula
mag 5.10
2.0°
Ophiuchus
IC 4592
Reflection nebula around a bright star
Reflection Nebula
mag 3.90
7.1°
Scorpius
Explore Nightbase
Related knowledge, tools, and stories — no observation planning required.
Scorpius
Mythology, bright stars, and deep-sky highlights.
Constellation
Galaxies and the Interstellar Medium
The Hubble tuning fork, Tully-Fisher distances, metallicity, Wolf-Rayet stars, HII regions, interstellar dust, the 21-cm hydrogen line, and the Sunyaev-Zel'dovich effect — the working toolkit astronomers use to read galaxies and the stuff between their stars.
Article
Mars
Polar caps, dust storms, and observing its oppositions.
Deep dive
