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wimvb

Cygnus Wall - final (for now)

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wimvb    1,918

Cygnus Wall (part of NA nebula), imaged on October 3rd and 4th

30 x 8 min unguided @ ISO 800 with unmodified Pentax K20D

Skywatcher 150PDS on AZ-EQ6 GT

Processed in PixInsight.

Comments welcome

CygnusWall_fin2.png

  • Like 7

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ChrisLX200    3,594

Looks good to me Wim, but I think you have a bit more dynamic range to play with in the data. Lift the brightness a tad and it will pop!

ChrisH

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wimvb    1,918
6 hours ago, simmo39 said:

V nice!

Thank you

2 hours ago, ChrisLX200 said:

Looks good to me Wim, but I think you have a bit more dynamic range to play with in the data. Lift the brightness a tad and it will pop!

ChrisH

Thank you. I agree, it is lacking. My efforts to push the nebula have so far not been successfull, it always resulted in artefacts. I will have to rethink this one. There wasn't actually not so much dynamic range to start with, high clouds spoiled a good part of the subs. I'll have another look at the data.

Thanks for the comment, much appreciated.

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PatrickGilliland    2,034

Nice work Wim, all very neat and tidy, think as Chris said a little more something is in there and will liven up the image a little.

Nice work and natural feel so dont loose that.

Paddy

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wimvb    1,918

Thanks, Peter.

The new mount works better than expected. Still, I'm looking into guiding. I just have to figure out the best (for me) and most affordable setup.

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wimvb    1,918

Thanks, Paddy. Trying to squeeze those last photons out of the image, made it look unnatural, so I decided to back off (for now). But I will have another go at it.

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tomato    253

Great image, I have an ancient K100D, I must pull it out and try for some widefield shots like this.

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wimvb    1,918

Good luck with it. Unmodified Pentax cameras are a bit more sensitive at longer wavelength than Canons, so it may work. Just make sure you take many exposures, because these cameras are also noisier than Canons. This image was the result of multiple imaging nights (3 I believe). Only the 30 best subframes were used. For some reason that I still don't understand, some subs had a lot more noise than others after calibration. I have now retired this camera.

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gorann    1,386

Wim,

So you are retiring your DSLR. I just bought another one, a Canon 60D (ca 300 Euro used on ebay in great condition) for my Samyang 135 to sit side by side with the 60Da on one of the scopes. Seems impossible to get hold of a used 60Da so at least with a 60D I will not be confused fiddling with the settings. Yes, I know, and the plan is also to start using my ATIK more.

In any case, I had a go at your image to see what the standard PS tricks could do. So, some High Pass filtering, a bit of local contrast enhancement, selective star shrink and a tweak of the curves and red tone. Finally some NR and gaussian blur to fight the red-green noise. I hope you do not mind and I am not sure it is better, but it is different.

Cheers

Wimvb CygnusWall_fin2 GN2.png

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wimvb    1,918

Now that I've learned processing, I may return to this image and redo from scratch. There are enough cloudy nights anyway. But not tonight.

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gorann    1,386

Yes, enough clouds around. There is a theoretical possibility for me on Monday night here, but otherwise the forecast for this corner of the world is only good for processing

Skärmavbild 2017-09-24 kl. 11.43.48.png

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wimvb    1,918

Screenshot_20170924-114746.thumb.png.07f5ebee778776b6e0fbb4a7f9d38161.png

My neck o'the woods looks clear tonight. And it's sunny now. :hello2:

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