Jump to content


The Wall in NGC7000


Recommended Posts

I recently finished capturing data for a bi-colour image of the wall in NGC7000. It's taken about a month, which I suppose isn't that bad all things considered!

As I'm sure you're aware, this is one of the brighter regions in the 1700 lightyear-distant North American Nebula. Although huge (estimated 100 lightyears across), NGC7000 is believed to be mostly 'lit up' by a single giant star HD 199579, also known as Miro's Diamond. You could call the nebula V37 if you wish, as Herschel designated it #37 in his 'V' catalogue when he discovered it - the 'V' standing for Very large :)

The image is a bi-colour, 2-panel mosaic with total integration time of around 13.5 hours. Processing is just curves in Photoshop with a star layer to prevent star bloat, especially in Oiii, with which the Baader filter gives a few halos on the brighter stars. I don't know if I've combined the layers in a sensible manner, I just pasted the Oiii in to the green and blue layers then tweaked it down a bit in the green. I was aiming for roughly 'natural-ish' looking colours, although it looks massively different on my two monitors. Any feedback on that is appreciated.

Thanks for looking!

Hα: 2x24x600s
Oiii: 2x17x600s

Optics: MN190
Camera: 460ex
Mount: AP Mach1GTO
Guding: Orion mini 50mm guidescope & QYH5L-ii

[direct link]


You may not like the colour combination, but if you're interested here are the separate channels so you can see the difference between hydrogen and oxygen





Link to comment
Share on other sites

  • 1 month later...

Not having much other data to play with, I thought I'd reprocess this. I've only done the Hα as this is clearly the best data - perhaps I'll get some improved Oiii in the future.

I've uploaded a larger image and also flipped it the right way around (looks weird after staring at it in reverse for so long!) Maybe it's not that different now I compare, but the stars are improved I think?

Here's the direct link to the large size image: The NGC7000 Wall in Hα


Link to comment
Share on other sites


This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.