NGC 7099 Globular Cluster
Open cluster

NGC 7099 Globular Cluster

M 30 · Capricornus
These photons are ~28,000 years old
UV/IR
Date
2025-09-21
Location
36.3860° N, 28.0409° E
Integration
16m (49 × 20s)
Software
ZWO Seestar app
Notes
—
Plate solve
Centre RA
21h 41m 00.5s
Centre Dec
−23° 21′ 18″
Field
42.7′ × 76.0′
Pixel scale
2.37″/px
Orientation
170.5° E of N
TelescopeZWO Seestar S50
CameraZWO Seestar S50 Camera
RigFamily Holiday Rig
Captured from · Ελλάς
36.3860° N, 28.0409° E · open map ↗

Where to find it

Interactive sky chart centred on 21 41 00.5 -23 21 18, with constellation stick figures overlaid. Locate shows the whole constellation with the target ringed; Field zooms to the close-up. Drag to pan, scroll to zoom, click any star to identify it. Imagery: DSS colour survey via CDS Aladin Lite. Constellation figures © Dominic Ford (GPLv3).

A compact globular cluster that has undergone core collapse, producing an exceptionally dense centre. Chains of stars extend outward like claws from the core.

Frequently asked questions

What kind of object is M 30?
M 30 is an open cluster.
Which constellation is M 30 in?
M 30 lies in the constellation Capricornus.
How far away is M 30?
The light in this image left M 30 roughly ~28,000 years ago, so that is how far back in time you are seeing it.
What are the coordinates of M 30?
M 30 sits at right ascension 21h 41m 00s and declination −23° 21′ 18″ (J2000).
When is the best time to photograph M 30?
M 30 rides highest in the evening sky around August, reaching about 13° above the horizon from around 54°N.
What equipment was used to photograph M 30?
This image of M 30 was captured with ZWO Seestar S50 and ZWO Seestar S50 Camera.
How much exposure time went into this image?
This image of M 30 represents 16m (49 × 20s) of total integration time.