The Great Barred Spiral Galaxy (NGC 1365)

2025

Dec 19

Written By Charles Lillo

NGC 1365, a large barred spiral galaxy with a bright core, sweeping arms, and pink star-forming regions, surrounded by a field of foreground stars and distant galaxies.

Image Title: The Great Barred Spiral Galaxy (NGC 1365)

Copyright: Bruno Rota Sargi

Date image was taken: November 11, 2025

Location: Araraquara/SP - Brazil (Bortle 6)

Data Acquisition Method: Personal Telescope Setup

Description and Details: NGC 1365, also known as the “Great Barred Spiral Galaxy,” is one of the most striking barred spiral galaxies in the sky, located in the constellation Fornax about 56 million light-years away. Its massive central bar feeds an active core, while its well-defined spiral arms show intense star formation. It is a prominent member of the Fornax Cluster and a frequent target for studies on galactic dynamics. It has been observed in detail by several telescopes, including the Hubble.

Capture Details

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 HaLRGB
Camera: ToupTek ATR533M
Baader MPCC Coma Corrector

Images:

800 frames 100gain 60s offset 30temp -5 Filter Touptek L 1.25"
130 frames 100gain 120s offset 30temp -5 Filter Touptek R 1.25"
120 frames 100gain 120s offset 30temp -5 Filter Touptek G 1.25"
120 frames 100gain 120s offset 30temp -5 Filter Touptek B 1.25"
120 frames 100gain 180s offset 30temp -5 Filter Touptek Ha 1.25"
Total: 31h20m

100 Bias
60 Flats

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