NGC 2835, Intermediate Spiral Galaxy

NGC 2835 is an intermediate spiral galaxy located in the constellation Hydra. It is located at a distance of 35 million light years. (ESA/Hubble)

The core of the galaxy is composed of older yellow stars with long lifespans, on the order of billions of years, like our sun.

The arms of the galaxy are composed of a high concentration of blue stars. Blue stars are very hot and have a short lifespan on the order of hundreds of millions years.

The pink regions that dot the spiral arms are H-alpha regions. These pink regions are regions rich in hydrogen gas (HII Nebulae). Stars are formed in these regions and drift out into the galaxy's arms.

Although the galaxy is quite symmetric, the southern arms (lower in the image) appear less developed in their outer parts than the northern ones.

Image processed by Andrew Macica, original data from Telescope Live.

Imaging Details:

Observatory: Rio Hurtado Valley, Chile

Telescope: Planewave CDK24

Aperture: 610 mm (24 inches), f/6.5

Focal Length: 3962 mm

Camera: FLI PL 9000 CCD

Filters: LRGB

Total Exposure: 13 hours 20 min.

Image Processing: PixInsight 1.9.3 Lockhart (x64);

BlurXTerminator, NoiseXTerminator, StarXTerminator (RC Astro);

Adobe Photoshop 25.12.4;

Adobe Lightroom Classic 14.5

Instruction on PixInsight from Adam Block Studios.