Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Blinking planetary  ·  NGC 6826
Getting plate-solving status, please wait...
NGC 6826 • Blinking Planetary Nebula in HOO, 


            Douglas J Struble
NGC 6826 • Blinking Planetary Nebula in HOO
Powered byPixInsight

NGC 6826 • Blinking Planetary Nebula in HOO

Technical card

Imaging telescopes or lenses: Explore Scientific 152 mm Carbon Fiber

Imaging cameras: ZWO ASI1600MM-PRO

Mounts: Astro-Physics Mach 1 GTO

Guiding telescopes or lenses: Orion 80mm Short Tube

Guiding cameras: Starlight Xpress Lodestar x2

Software: PHD2  ·  Sequence Generator Pro  ·  PixInsight  ·  Stellarium  ·  Photoshop CS5  ·  SkySafari Pro

Filters: Astrodon Ha 5nm  ·  Astrodon OIII 3nm

Accessory: ZWO 8x 1.25" Filter Wheel (EFW)  ·  QHYCCD PoleMaster  ·  Hotech 2" SCA Self-Centering Field Flattener  ·  MoonLite CFL 2.5" Large Format Focuser

Dates:June 11, 2019June 14, 2019June 20, 2019

Astrodon Ha 5nm: 149x120" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 210x60" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 150x120" (gain: 200.00) -20C bin 1x1

Integration: 13.5 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 12.79 days

Avg. Moon phase: 81.80%

Bortle Dark-Sky Scale: 6.00

Basic astrometry details

Astrometry.net job: 3251687

RA center: 19h 44' 48"

DEC center: +50° 31' 30"

Pixel scale: 0.647 arcsec/pixel

Orientation: 134.752 degrees

Field radius: 0.217 degrees

Resolution: 1926x1459

Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


NGC 6826 (also known as Caldwell 15) is a planetary nebula located in the constellation Cygnus. It is commonly referred to as the "blinking planetary", although many other nebulae exhibit such "blinking". When viewed through a small telescope, the brightness of the central star overwhelms the eye when viewed directly, obscuring the surrounding nebula. However, it can be viewed well using averted vision, which causes it to "blink" in and out of view as the observer's eye wanders.

A distinctive feature of this nebula are the two bright patches on either side, which are known as Fast Low-Ionization Emission Regions, or FLIERS. They appear to be relatively young, moving outwards at supersonic speeds.


Sky plot

Sky plot


NGC 6826 • Blinking Planetary Nebula in HOO, 


            Douglas J Struble