The bubble and the claw

• Connection to Category: This image display a small 3 degrees portion of our night sky in the region of Cepheus constellation. This region contains several emission nebulas. I chose to capture is with a combination of three 6.5 nm bandwidth filters (for the nebulosity) and wide band RGB filters (for the stars). It was taken over multiple short nights during this spring from my balcony, under Bortle class 5.7 sky.
• City: Frenkendorf
• State (Province/Region): Basellandschaft
• Country: Switzerland
• Camera body used: ZWO ASI2600MM Pro
• Filter(s): Optolong 6.5 nm S-ii / H-a / O-iii and Optolong RGB
• Lens or telescope used: William Optics Cat 91 WIFD
• Mount: ZWO AM5N
• Number of frames: 120 x 300s for each S/H/O; 40 x 30s for each RGB
• Total exposure (integration) time: 31h
• ISO or gain: 100
• Software: PixInsight, GraXpert, BlurXT, StarsXT, NoiseXT + Photoshop to remove artefacts (halos) on large stars caused by the filters