The Spaghetti nebula before and after starless processing

[gorann]

This is a two-panel mosaic of about 8 hours of RASA8 data (with ASI2600MC and NBX Ha+Oiii filter) from 2021 were I now have used starless processing of the nebulosity, which gives a very different (i.e. much much  better) result for data like this compared to traditional processing. In particular, I did not have to press the Ha and Oiii filamets as hard to make them stand out behind the starfield.

From Wikipedia: Simeis 147, also known as the Spaghetti Nebula, SNR G180.0-01.7 or Sharpless 2-240, is a supernova remnant (SNR) in the Milky Way, straddling the border between the constellations Auriga and Taurus. The nebulous area is fairly large with an almost spherical shell and filamentary structure. The remnant has an apparent diameter of approximately 3 degrees, an estimated distance of approximately 3000 (±350) light-years, and an age of approximately 40,000 years. It is believed that after its stellar explosion a rapidly spinning neutron star known as pulsar PSR J0538+2817 was left behind in the nebula core, emitting a strong radio signal.

Cheers, Göran

Here is the new version

And here is the old one (where I tried to do my best by using EZ star suppression filter in PI).

[tomato]

Nice one, this object looks even more eerie and surreal when the stars are reduced.

[Roy Foreman]

Definately better. Looks sharper too

[gorann]

11 minutes ago, tomato said:

Nice one, this object looks even more eerie and surreal when the stars are reduced.

 

6 minutes ago, Roy Foreman said:

Definately better. Looks sharper too

Thanks a lot boys! Yes, sharper and better in every way😄