Above (May 2023): A section from the Full Image below - somewhat different colouring.
Cygnus Region: From the Crescent Nebula toward Sadr.
Above image awarded APOD GrAG 'Image of the Day' 29th July 2020
Although the bright star Sadr is not actually in this image....The Sadr region is one of the nebulous regions of Cygnus; others include the Butterfly Nebula and the Crescent Nebula - shown here at bottom right. It contains many dark nebulae in addition to the emission diffuse nebulae.
Other related pages : Butterfly Nebula; HERE and a closer look at the Crescent Nebula : HERE
The full image above has been rendered as HSHO : LRGB (close to Hubble Palette). Hence the Crescent appears as Blue/Green since the Hydrogen alpha signal is mapped to Green and the Oxygen III signal is mapped to Blue. Via the link above to a closer look at the Crescent Nebula - one will see the data in a bi-colour image (as we are used to seeing it for the Crescent) i.e. Ha signal mapped to red and OIII signal mapped to Green & Blue (HOO ; RGB)....making the final image more Red/Salmon colour.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: FLI ML16200
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon SII, Ha & OIII.
Accessories: Robofocus Focuser, ATIK EFW3
Original Resolution: 4470 x 3600
Dates: 6th Jul - 10th Jul '20
Frames:
Astrodon SII 32 x 10'
Astrodon Ha 36 x 10'
Astrodon OIII 31 x 10'
Total Time: 16 Hours 30 Mins.
Center (RA, Dec): (304.154, 38.924)
Center (RA, hms): 20h 16m 37.043s
Center (Dec, dms): +38° 55' 25.599"
Size: 2.37 x 1.9 deg
Radius: 1.518 deg
Pixel scale: 1.9 arcsec/pixel
Orientation: Up is 0.604 degrees E of N
Other related pages : Butterfly Nebula; HERE and a closer look at the Crescent Nebula : HERE
The full image above has been rendered as HSHO : LRGB (close to Hubble Palette). Hence the Crescent appears as Blue/Green since the Hydrogen alpha signal is mapped to Green and the Oxygen III signal is mapped to Blue. Via the link above to a closer look at the Crescent Nebula - one will see the data in a bi-colour image (as we are used to seeing it for the Crescent) i.e. Ha signal mapped to red and OIII signal mapped to Green & Blue (HOO ; RGB)....making the final image more Red/Salmon colour.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: FLI ML16200
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon SII, Ha & OIII.
Accessories: Robofocus Focuser, ATIK EFW3
Original Resolution: 4470 x 3600
Dates: 6th Jul - 10th Jul '20
Frames:
Astrodon SII 32 x 10'
Astrodon Ha 36 x 10'
Astrodon OIII 31 x 10'
Total Time: 16 Hours 30 Mins.
Center (RA, Dec): (304.154, 38.924)
Center (RA, hms): 20h 16m 37.043s
Center (Dec, dms): +38° 55' 25.599"
Size: 2.37 x 1.9 deg
Radius: 1.518 deg
Pixel scale: 1.9 arcsec/pixel
Orientation: Up is 0.604 degrees E of N
Sky Map
Annotated Image
