Author Topic: Sh2-174 - HaOIIIRGB - Valentine Rose  (Read 25 times)

0 Members and 1 Guest are viewing this topic.

Roberto

  • O. A. S.
  • Star Class
  • *
  • Posts: 330
    • Astrobin
Sh2-174 - HaOIIIRGB - Valentine Rose
« on: Yesterday at 17:45:16 »
Another lovely Sharpless object; this is the the northernmost in the catalog.

Very difficult one to image - very faint! Had some very good seeing but also very hazy skies for over half of the acquisition time so dealing with gradients was a chore.

Full resolution, bicolour, RGB and annotated versions here:

https://www.astrobin.com/ypasor/H/?nc=user

A is OIII, B is Ha, C is BiColour using the dynamic narrowband tutorial on https://thecoldestnights.com/

Roberto


Carole

  • O. A. S.
  • Galaxy Cluster
  • *
  • Posts: 8731
    • Carole's images
Re: Sh2-174 - HaOIIIRGB - Valentine Rose
« Reply #1 on: Today at 12:00:26 »
I have never tried this, I suspected it was faint, and small?

You have captured a very nice image Roberto.

Carole

Roberto

  • O. A. S.
  • Star Class
  • *
  • Posts: 330
    • Astrobin
Re: Sh2-174 - HaOIIIRGB - Valentine Rose
« Reply #2 on: Today at 14:02:59 »
Hi Carole

Thank you.  It is rather faint but responds equally well in Ha and OIII so that you can create a bicolour image of it.  My FOV is almost 2 degrees a side so not that small.

It's interesting that the parent star of the planetary nebula, white dwarf GD561, which is the very blue star in between the Ha and OIII regions seems to be running away from the shell of dust it created:  http://adsabs.harvard.edu/full/1994AJ....108..978T

Roberto

Mac

  • O. A. S.
  • Galaxy Class
  • *
  • Posts: 3360
    • Espania.
Re: Sh2-174 - HaOIIIRGB - Valentine Rose
« Reply #3 on: Today at 15:38:58 »
Nice Image,



I dont think i've ever seen this one.

it will be nice to add the blue component, especially as the green and red are pretty good themselves.

Mac.
Never, ever, argue with an idiot. They'll drag you down to their level and beat you with experience.
If you argue with an idiot, there are two idiots.