returned to the Little Gem (Halifax)

Wanted to have another go at the Little Gem or NGC 6818.

I first imaged this small planetary nebula, during my RASC Finest NGC campaign, back on 12 Jul 2016. At the time, I made a note to get more LRGB data and narrowband.

On 4 Jul 2018, I received more data but the quality was very poor. I gathered data again on 7 Sep 2020 but did not make any remarks on the results.

So, one more time for fun...

Submitted requests to the Burke-Gaffney Observatory on 30 Jul 2022.

And waited for the BGO robot to return from vacation...

The full spectrum, i.e. luminance and colour data, was completed at 00:06:39 ADT.

Luminance only, 15 seconds subexposures, 20 stacked shots. FITS Liberator, GIMP. North is up; left is east.

Fifty minutes later, the narrowband data was captured.

Hydrogen-alpha, 60 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; left is east.

Ionised oxygen, 60 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; left is east.

Curious the image shift in the narrowband filters.

Bright in all channels...

OK. I think I have enough data now.