Horsehead in Ha

[brisen]

I have added to the 12.5 hours of Ha data that I had on the Horsehead to take it to 18 hours in total. I was intending to get more data then this but the weather has other plans and I have another NB target that I want to work on over the next new moon if the weather is clear.

Processed with PI but I need to get some more practice with processing just Ha.

The link to the larger version on Astrobin is https://astrob.in/full/ckkoab/0/

Brian

[miki63au]

Woah, very sharp Brian. Did you use the 12" RC?


Mick

[brisen]

Hi Mick

Thanks, no this was captured with the Esprit 120.

Brian

[lazjen]

:thumbsup: That's a pretty good shot. Nicely done.

[alpal]

Hi Brian,
the detail in your picture is incredible.
It looks like going deep was worth the effort.

cheers
Allan

[codemonkey]

Nice one Brian. Love the FOV and contrast. 18hrs is a solid effort!

[multiweb]

Missed that one. Top shelf! :thumbsup::thumbsup::thumbsup:

[brisen]

Thanks Allan, Chris, Lee and Marc. I might yet have an opportunity to add some more data to this as it looks like we might have 3 or 4 clear nights later this week and my next target isn't quite out of the light pollution until a bit later in the night at the moment.

Brian

[Atmos]

A lot of fine detail showing up there, very smooth result but that’s where a lot of exposure comes in.

[brisen]

Out of curiosity I ran both the integrated masters for 12.5 hrs and 18 hrs through the Subframe Selector process in PI when I was processing the image and the SNR Weight almost doubles with the extra 5.5 hrs and really moves the signal above the noise floor. I am curious to see what impact adding some more data later in the week does to the weights.

Brian

[Ross G]

A fantastic monochrome photo Brian.


Amazing details and sharpness



Beautiful tones and composition.



Ross.

[srmnm]

Outstanding shot!

[brisen]

I had an opportunity to add another 6 hours of data the other night in what was the best seeing I can remember imaging in from here - normally subs are around the 2.5" FWHM but I was able to get the majority of the extra 6 hours at between 1.7 and 1.9" FWHM.

The attached image is 24 hours total integration over multiple nights in the last 3 weeks. Taken with an Esprit 120 on an EQ8 using the Atik One 6.0 with Baader Ultra narrowband Ha (3.5nm) filter.

I have taken the processing a bit further this time in PI then the previous version.

A larger version at https://www.astrobin.com/cbrtw4/

Brian

[brisen]

Thanks Ross and Will.

Brian