The Tulip Nebula (Sharpless 101) - bottom right - is an emission nebula located in Cygnus constellation. It lies at an approximate distance of 6,000 light years from Earth and has an apparent magnitude of 9.0. It occupies an area of 16 x 9 arc minutes of apparent sky and has a linear diameter of about 70 light years. The HII region is called the Tulip Nebula because its shape resembles the form of a tulip and it has a reddish glow in long exposure photographs. Astronomer Stewart Sharpless listed the object as Sh2-101 in his 1959 catalogue of nebulae.
NGC 6871 is a small, young open cluster in the constellation of Cygnus. The cluster has less than 50 members, most of which are blue and white stars. It is located 5135 light-years from Earth.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: FLI ML16200 ADT
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor & PixInsight,
Filters: Astrodon Ha, SII, OIII,
Accessories: Robofocus Focuser, ATIK EFW3
Original Resolution: 4315 x 2855
Dates: 19th July to 6th August 2019
Astrodon Ha 24 x 20'
Astrodon SII 22 x 20'
Astrodon OIII 20 x 20'
Total integration = 22 hours for the upper image.
The lower image is 1 hour each of R (red), G (green) & B (blue) added to the 8 hours of Ha data.
Center (RA, Dec):(301.155, 35.840)
Center (RA, hms):20h 04m 37.125s
Center (Dec, dms):+35° 50' 24.862"
Size:2.28 x 1.51 deg
Pixel scale:1.9 arcsec/pixel
Orientation:Up is 1.81 degrees E of N