Tarantula in Fast Narrowband

[glend]

I hve now completed the Tarantula Nebula "Fast Narrowband" experiment and have posted the two final images on Astrobin. I ran the Sii data last night and added some more Ha to the data originally acquired. Data details are on the Astrobin Image details pages below.

I feel these have come out pretty nicely now, considering the limited time available to spend on the Tarantula at this time of year (you have to start around 1:45am and the dawn starts at 4:30am now, and the Moon of course affecting OIII.)


Here are the links. I have removed the original 'blue' test image from the Gallery. These two images are shown in the HOS, and SHO pallet.


http://www.astrobin.com/264527/

http://www.astrobin.com/full/264527/0/

http://www.astrobin.com/264532/

http://www.astrobin.com/full/264532/0/


Thumbnails are attached below.

[Slawomir]

Not a bad result for such limited data :thumbsup:

I would tweak white balance though, because as much as I like blue, too much of it makes the image looks quite dark and gloomy IMO.

[glend]

Thanks Suavi, i agree. I held the brightness down because of the core. I will be reprocessing it when i get some Sii to add.

[Atmos]

The nebulosity is nice Glenn but I do agree with Suavi, difficult to discern anything other than the blue :) As you say, it is awaiting more data :)

[SimmoW]

Nice start Glen, yeah the fogging of the objective probably didn't help. And best to combine shorter subs with longer to handle the HDR

[glend]

Yeah guys i know it is not a competition class image, it is an exercise in high gain short sub narrowband, which the ASI1600 has shown the capability of pulling off, in the right hands and conditions. I will pull down the Astrobin image shortly as i will be adding in the Sii data, and reprocessing all the subs. The others guys doing this sort of thing with the camera are all on CN and working mainly in mono so far. I am happy for a moderator to delete this thread.

[SimmoW]

No need Glen, it's still a good demo of capabilities, a snapshot of your first experiments.

[glend]

Image link info removed for reprocessing.

[glend]

If you look back down to the original post I have finalised this image (well two actually in different pallets). I have removed the original very blue image from Astrobin and added in these two. I am reposting the #1 edited information here. More details in the Astrobin Details page.

Here is what the re-edit of post #1 says:

I have now completed the Tarantula Nebula "Fast Narrowband" experiment and have posted the two final images on Astrobin. I ran the Sii data last night and added some more Ha to the data originally acquired. Data details are on the Astrobin Image details pages below.

I feel these have come out pretty nicely now, considering the limited time available to spend on the Tarantula at this time of year (you have to start around 1:45am and the dawn starts at 4:30am now, and the Moon of course affecting OIII.)


Here are the links. I have removed the original 'blue' test image from the Gallery. These two images are shown in the HOS, and SHO pallet.


http://www.astrobin.com/264527/

http://www.astrobin.com/full/264527/0/

http://www.astrobin.com/264532/

http://www.astrobin.com/full/264532/0/

[Atmos]

Looking pretty good Glen! The region is nicely resolved :)
As a side note, have you had any luck with finding a suitable flattener for your Bressier?

[glend]

Thanks Colin, i was trying to prevent core blow out so was pleased that the central stars show up nicely, and the star colours look good, so not much clipping on them. Of course the images are slightly darker as a result but once summer comes, and it is more available, i will go backand reshoot in standard length narrowband at a lower gain setting, and create a mask for the core.

NO, i have not had much luck with finding a flattener that will work with the Bresser. The Hotech SCA for fast refractors that i bought would not achieve focus at all and it was correctly spaced. I don't want to risk buying another one and having to sell it at a loss. I can live with the field curvature, its not bad in the centre. I have sent Wolfi at Teleskop-Express a question about whether the TSFlat would work, and i am hoping they try it in their shop.:shrug:

[Slawomir]

Interesting and encouraging results Glen :thumbsup:

This beautiful object deserves longer total integration though, and I am certain that you would be able to show more structures and more colour variations with more data.

[glend]

Yes indeed if the cloud ever disappears. i will reshoot at max well depth and long sub length if i ever get the chance.

[SimmoW]

Haha Glen, I thought it was just us Victorians who have copped the Great Cloud-out of 2016. Not good, is it...