Kronberger–Ferrero 1 (KnFe 1, Kn 48, Fe 2, PN G097.4+12.3) planetary nebula in Cepheus. Taken over
several nights from Aug. 06, 2023 to Aug. 17, 2023. Imaged with Starlight Xpress’ SX-825 camera and
a Celestron EdgeHD 9.25 at f10, on a Losmandy G11/Gemini mount. The H-alpha and OIII subframes were
15 and 20 minutes binned 1x1, while the RGB subframes were 3 minutes binned 2x2, resulting in the
following total exposures L:R:G:B = (HA+OIII): (R+Ha):(G+OIII):(B+OIII) (min) = (450+540):(54+450):
(54+540):(54+540). Captured with Nebulosity, calibrated, sigma combined in Siril with other
processing using PixInsight LE, Photoshop CS and GIMP. North is up.