NGC 4565

Re-processed with 2022 data added to original 2019 run

The first image below combines data acquired in 2019 with a second run made in 2022. The image also benefits from advances in processing tools and techniques in the intervening time. This can be seen in the detail revealed, not only in the main galaxy but also in the smaller, more distant ones visible in the field.

Many of these field galaxies are identified in the annotated version of the image below.

The equipment for the 2022 run was the same as 2019’s: Planewave CDK 14″ reflector on 10Micron GM2000 mount. FLI Proline P09000 CCD camera with Astrodon LRGB filters.

Exposure times: 2019 run: Lum 8 hrs, R 9 hrs, G 7.5 hrs, B 8.5 hrs.

2022 run: Lum 8 hrs, R 10 hrs, G 9 hrs, B 9.5 hrs.

Combined data processed in PixInsight with particular benefit from BlurXterminator, NoiseXterminator and Generalised Hyperbolic Stretch.

2019 Image

For comparison the originally published 2019 images are shown below.

NGC 4565

An edge-on spiral in Coma Berenices, this beautiful galaxy is some 38 million light-years away.

In this fullframe image, several other galaxies can be seen:

• to the upper left of 4565 is NGC 4562 (mag 13.7)
• to its lower left are two distant and faint galaxies, face-on spiral IC3546 (mag 14.6) and edge-on IC3543 (mag 15.8)
• a few other faint smudges can be seen in the image. The faintest galaxy I have identified is mag 18.2

Planewave CDK-14 scope, FLI Proline P9000 CCD camera, Astrodon LRGB filters.

Exposure times: Lum 8 hrs, R 9 hrs, G 7.5 hrs, B 8.5 hrs.

This zoomed-in view shows more detail in the dust lane that lies across the plane of the galaxy.