NGC1499 California Nebula

Object: NGC1499, California Nebula.

Date2/Location2: 2017-10-18, Zirndorf.

Optic: Skywatcher Esprit 100/550 Refractor.

Flatner: Skywatcher Esprit 100/550 Flattner.

Filter: Baader 50mm LRGB.

Camera: SBIG STL11000M C2 at -20°C.

Capture/Guiding: Nebulosity3, PHD2.

Exposure: L 24x10min, 118x Bias, 31x Darks, 27x Flat.

.

Color was optained from a previous image:.

Date1/Location1: 2016-12-30, Zirndorf.

Optic: BA200 (200/584mm Newton f/2.9) + Newtonmaster, ASA 0,73x Newton Coma Corrector.

Camera: Moravian G2 8300 @-30°C, EFW-2S-10, Moravian OAG.

Filter: Baader 36mm Filter, Ha, SII, OIII.

Exposure: Ha 20x8min, SII 7x8min, OIII 7x8min, 21x Dark, 203x Bias, 51x Flat(Ha), 51x Flat(OIII).

Guiding: QHY5L-II, PHD2.

.

Image Processing (Date2).

Pixinsight: ImageCalibration, CosmeticCorrection, ImageRegistration (BicubicSpline CT=0,1), ImageIntegration,.

MureDenoise, ImageRegistration (and rescaling) of color image from Date1.

.

ST: DigitalDevelopment, Tracking, NoiseReduction, Mask, Magic (StarShrink).

.

not for all versions.

PS: artificial expansion of color data (color image had a smaller field of view), maskedHueSaturation,.

maskedDynamic, LuminanceLayer, maskedSoftLight, maskedBlend of color image, Levels, Curves, unsharpMasking

Done