Cepheus & Cassiopeia, Milky Way … Second try

Cepheus & Cassiopeia
Cepheus & Cassiopeia

Milky Way in Cepheus and Cassiopeia. Lots of nebulae visible: Sh 2-155 (Cave Nebula), NGC 7538 (Northern Lagoon Nebula), Sh 2-157 (Lobster Claw Nebula, NGC 7635 (Bubble Nebula), NGC7822, Sh 2-170 (Small Rosetta Nebula). And NGC 7789 (White Rose Cluster).

This time I got the ISO settings right.

This time I had a strong gradient towards the horizon. Therefore I generated a background gradient maks by Dynamic Background extraction and worked hard to the bright regions towards the horizon.

The starless part looks really strange and artificial. But after adding the stars … I like it.

Acquisition Details

Lens: Sigma 135/F1.8 DG HSM ART
Lens Speed: F4
Filter: Haida Nano Pro UV-IR-CUT
Camera: Canon EOS Ra
Mount: Skywatcher Star Adventurer Pro
No Guiding
Light Frames: 219x60sec
Flats, Bias, Darks
Manual dithering every 20 exposures only in RA
Camera settings: ISO 1600
Bortle 4-5
Acquisition Date: July 11, 2021


Imaging: PixInsight (pre-post-processing)
Noise Reduction: Topaz AI Denoise