Een verzameling van galaxies (NGC4631, NGC4627, NGC4657 en NGC4656) geschoten met de TS 130/910 APO, 0,8x reducer, Baader filters en ZWO ASI 1600mm – Cool camera in de achtertuin in Limmen. De foto is enigszins gecropped (naar ong. 60%).
40x RGB @ 120 sec (unity gain)
41x Ha @ 300 sec (gain: 300)
Bewerkt in APP (calibration, registration, normalization, integration, light polution removal, RGB combination) en PixInsight (DynamicCrop, BackgroundNeutralization, Histogram Transformation, ColorSaturation, HDRMultiScaleTransformation, TGVDenoise (met inverted range mask), Unshapening (50%))