Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Sharpless 1-89 - 6.11.2022 at 00.00 - 6.11.2022 at 00.01 Imatra Observation number 110589

Visibility I / V

Rauno Päivinen, Etelä-Karjalan nova

The rarely imaged planetary nebula Sharpless 1-89 (SH1-89, PNG 089.8-00.6) can be found in the constellation Cygnus quite close to the more imaged North America nebula.

The central area of the nebula is about 1 arcminute in size, the dim outer parts extend farther, the nebula as a whole is about 5 arcminutes in diameter. I also call the fog the Moth nebula.

The structure of the nebula is bipolar, where the brighter core region is well visible in the 0III band and the outer dim parts are better visible in H-Alpha. An interesting detail is that tail visible in h-alpha.

As the first image, the image assembled with the HOO palette, H-alpha in the red channel and OIII in the green and blue channels. I collected light for H-alpha for 16h 50min and for OIII channel for 15h.

As another h-alpha channel, the nebula of the Milky Way can also be seen in the picture

As the third OIII channel, darker structures can be distinguished in the center of the fog and the dark dust areas at the ends stand out well, especially the upper one is very clearly defined.

The fourth image from the negative h-alpha stack, the tail stands out better here

The fifth picture from the negative OIII stack, I stretched that so that those dim outer parts are visible.

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • Sharpless 1-89
  • Field of view
  • 20 arc minutes
  • Darkness
    • Mediocre
  • Seeing
    • Average
  • Nebulae
    • Planetary nebula info

      Planetary nebula is the remnant of a death star. It could be ring-shaped, disc-like or spread out rather irregularly.

      With the exception of some nearest objects planetary nebulae have a small apparent diameter and they need a rather big instrument to be visible.


      Planetary nebula M27 aka The Dumbbell Nebula in Vulpecula. Image Juha Parvio.


      M76 aka The Little Dumbbell Nebula in Perseus. Image Rauno Päivinen.

Technical information

Celestron C14 and Optec 0.5x reducer. Atik 460EX camera, bin2. Astrodon's 5nm h-alpha and 3nm OIII filters.

In the H-alpha channel 101 10 min exposures, in OIII 90 10 min exposures.

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.



characters left

By sending in this comment I confirm, that I've read and understood the the observation system's privacy policy.