— 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
| Data e Ora di acquisizione 12 Agosto 2001 alle 00:00 |
| Condizioni del Cielo Presenza di Luna |
| Filtri Utilizzati Astrodon 3nm HA e OIII |
| Diametro del Telescopio 250 mm (9") |
| Focale di Acquisizone 1140 mm |
| Soggetti Nebulosa Velo - NGC 6960 |
| Schema Ottico del Telescopio Newtoniano |
| Marca del Telescopio ARTEC by Artesky |
| Fenomeno o Evento Astronomico Nebulosa in Cigno |
| Tipo Immagine Digitale |
| Dispositivo di Acquisizione CCD |
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