NGC 5128, Centaurus A, is the fifth largest in the sky.
The literature debates whether this galaxy is a Hubble
type (lenticular) or an elliptical galaxy. Located
11-13 Mly away, it is the closest radio galaxy
to Earth and has a diameter of 123 kly.
Hover over the picture for an annotated version
Date: 16 and 17 January 2026
FOV: cropped to 54' × 36'; the apparent size
of NGC 5128 is about 25.7′ × 20.0′
Rotation: 89.946°
Telescope: Orion 127mm Mak-Cass (1380mm, nominally 1540mm, f/12.1)
Guiding: ZWO ASI120MM mini mono guide camera,
SVBony SV165 Mini 40mm f/4 guide scope
Computer: ASIair pro Raspberry Pi
Mount: ZWO AM5
Camera: ZWO ASI071MC Pro Cooled (-10°C) Color CMOS with gain 90
Pixel size: 4.78 μm
Resolution: 0.715 arcsec/pixel
Stacking: fifty-eight 300 second frames using Pixinsight
Calibration: 20 flats, 20 dark flats, and 20 darks
Total Time: 4 hours 50 minutes
Processing: Pixinsight – SPPC, DBE, SPCC, BlurXT, NoiseXT, DynCrop → Linear
MStr, GHS, HST, PMath MStr + GHS + HST → Stars, Sat,
StarXT, MStr, GHS, HST, PMath MStr + GHS + HST → Starless,
CurvesTr, HDRMST4PhLm, PMath ~(~Stars*~Starless) → Blend, scale
Location: Corzones Draw Ranch near Terlingua, TX
