Nebulosa NGC6960 Velo

— ACQUISITION —

Telescope: Artec250 equipped with Televue Paracorr Type 2.

Focal ratio: native f/4, working at f/4.6.

Main camera: QSI683WSG-8.

Sensor temperature: -20 degC.

Filters: Astrodon H-alpha 3nm / Astrodon OIII 3nm

Imaging scale: 0.976 arcsec/px.

Guide camera: Starlight Xpress Lodestar (on the main camera).

Guide software: PHD2.

Guiding performance: RMS error ranging between 0.43 arcsec and 0.58 arcsec.

Mount: AP900 GTO CP2.

Sub-exposures

– H-alpha: 7 x 1200s + 5 x 600s + 3 x 300s + 3 x 120s

– OIII: 5 x 1200s + 3 x 600s + 3 x 300s + 3 x 120s

— PROCESSING FLOW —

Processed in PixInsight 1.8

– Calibration, registration, HDR integration

– Deconvolution of the Ha and OIII frames separately

– Bicolor narrowband blending and RGB generation

– Color correction

– Stretch

– Automatic Background Extraction

– TGV denoise

– High Dynamic Range Wavelet Transforms (only in the area of 52 Cyg)

– Sharpening via Multiscale Linear Transform

– SCDN denoising (targeting green)

– Color saturation boost

– Contrast tweak