NGC 7099 Globular Cluster
RA 21h 41m · Dec -23° 21′
5′

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

Open cluster

NGC 7099 Globular Cluster

M 30 · Capricornus
These photons are ~28,000 years old
UV/IRUV/IR-cut. Blocks ultraviolet and infrared so refractor optics stay in focus across the visible band.ZWO Seestar S50ZWO Seestar S50Aperture 50mm · Focal length 250mm · f/5 · Apo triplet with ED element · Sony IMX462 colour CMOS sensor (1920 x 1080, 2.1MP)…View equipment →
⧉ 5 versions of this capture — pick one to see its image and log
Date
21/09/2025
Location
36.3860° N, 28.0409° E
Integration
16m (49 × 20s)
Software
ZWO Seestar app
Notes
·
Total effort
1h 20m over 1 night
Moon
🌘Waning crescent, 1% lit
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
Hemisphere
Southern
Also in this frame
M30

Catalogued objects inside the plate-solved field, nearest the centre first. Highlighted names have their own photo here.

TelescopeZWO Seestar S50
CameraZWO Seestar S50 Camera
RigFamily Holiday Rig

Where to find it

Finder chart
-24°-23°50′-23°40′-23°30′-23°20′-23°10′-23°-22°50′21h39m21h40m21h41m21h41m21h42m21h43mM 30NE42.7′ x 76.0′5′

Star field and catalogued objects inside the plate-solved field, oriented to the solve. Fully offline, from the bundled star and deep-sky catalogues.

Interactive sky chart centred on 21 41 00.5 -23 21 18. Drag to pan, scroll to zoom, click a star or object to identify it. Zoom in to the plate-solved field for the DSS survey photo; zoom out for constellation figures and neighbouring catalogue objects. Fully self-hosted: the star and deep-sky catalogues and the survey image are all served from this site, so nothing external loads. Imagery: DSS2 colour (STScI / POSS-II). Constellation figures © Dominic Ford (GPLv3).

Captured from · Ρόδος (Rhodes)
36.3860° N, 28.0409° E · view on OpenStreetMap ↗ · Place data © GeoNames (CC BY)

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 30° above the horizon from around 36°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) + 16m (49 x 20s) of total integration time.

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