M83: The Southern Pinwheel Galaxy

Image Title: Southern Pinwheel Galaxy (M 83)

Copyright: Bruno Rota Sargi

Date image was taken: June 28, 2025

Location: Araraquara/SP - Brazil (Bortle 6)

Data Acquisition Method: Personal Telescope Setup

Description and Details: M83 (NGC 5236), also called the Southern Pinwheel Galaxy, is a barred spiral galaxy located in the constellation Hydra, about 15 million light-years from Earth. It is approximately 55,000 light-years in diameter and features well-defined spiral arms and intense star formation.

It is one of the brightest and closest spiral galaxies, visible with binoculars in dark skies, especially from the Southern Hemisphere. At least 6 supernovae have been observed in it. Its core is active, with many regions of ionized hydrogen and young stars.

Setup:

Telescope: Skywatcher 254mm / F4.7
Mount: Skywtacher AZEQ6 GT
Guiding: Greika 70/700 with SvBony 0.5 reducer + Asi 120mm
Filters: Touptek Filter Wheel 8 x 1.25'' / Touptek Filter Set LRGB Ha
Camera: ToupTek ATR533M
Baader MPCC Coma Corrector

Images:

600 frames 100gain 60s offset 30temp -5 Filter Touptek L 1.25"
80 frames 100gain 120s offset 30temp -5 Filter Touptek R 1.25"
80 frames 100gain 120s offset 30temp -5 Filter Touptek G 1.25"
80 frames 100gain 120s offset 30temp -5 Filter Touptek B 1.25"
80 frames 100gain 180s offset 30temp -5 Filter Touptek Ha 1.25"

100 Bias
60 Flats

Softwares: N.I.N.A, PHd2, PixInsight, Photoshop, Siril

Name: Bruno Rota Sargi

Website or Facebook Profile: https://app.astrobin.com/u/brunorota#gallery