Search found 235 matches
- Sat Apr 07, 2018 7:21 am
- Forum: Gallery
- Topic: Bode and Cigar RGB
- Replies: 4
- Views: 5534
Re: Bode and Cigar RGB
Beautiful work...
- Sat Dec 16, 2017 8:48 am
- Forum: Gallery
- Topic: SkyNews Photo of the Week
- Replies: 2
- Views: 3782
Re: SkyNews Photo of the Week
Superb Hondo. Magnificent. Excellent work.
- Wed Nov 22, 2017 8:15 pm
- Forum: General Discussion
- Topic: What type of file am I using?
- Replies: 1
- Views: 3228
Re: What type of file am I using?
Linear and deBayered is the correct choice, assuming no other process has been applied to the stacked image.
- Wed Nov 15, 2017 9:31 pm
- Forum: General Discussion
- Topic: reverting one stage during 'wipe'
- Replies: 1
- Views: 3269
Re: reverting one stage during 'wipe'
Hi Lawrence. You should be able to select any option, Gradient Vignetting etc., and see changes in the sliders below. Of course, nothing happens unless 'Do' is selected, to render a new preview. If 'nothing' changes when you select options from the top row then it is perhaps a bug. No doubt you have...
- Fri Nov 10, 2017 8:50 pm
- Forum: General Discussion
- Topic: Channel separating script Mac and Linux
- Replies: 3
- Views: 4563
Re: Channel separating script Mac and Linux
Guy. I have been reading your excellent and comprehensive user notes. They are worth their weight in gold. Thank you. ----------------------------------------------- Here is an improved version of the script for use with most image formats. However, I am investigating why imagemagick is not reading ...
- Wed Nov 08, 2017 8:30 am
- Forum: General Discussion
- Topic: astro pixel processor
- Replies: 24
- Views: 27630
Re: astro pixel processor
The results are in. There's not a huge difference in appearance between the RGB at 275% and the LRGB at 400%, saturation. M31stRGB.jpg M31stLRGB400.jpg Total noise = SquareRoot of Read^2 + Dark^2 Noise analysis - referring to the sumOfsquares, indicates less noise in the LRGB at 400% saturation M31R...
- Tue Nov 07, 2017 9:32 am
- Forum: General Discussion
- Topic: astro pixel processor
- Replies: 24
- Views: 27630
Re: astro pixel processor
Hi Michele. Interesting comparison. The LRGB technique is intended to provide more control over saturation and not necessarily a guarantee of less noise. The 5 Pixel RGB blur seemed appropriate for the Veil rather than a fixed technique. As it turns out, your 'best' has less noise than the LRGB. All...
- Sat Nov 04, 2017 8:14 pm
- Forum: Gallery
- Topic: Horsehead Nebula
- Replies: 6
- Views: 6046
Re: Horsehead Nebula
I'm sure that one of the more advanced ST users could do a better job of post processing. Hopefully, this is helpful and a starting point... First up, is a very basic approach to get a look at what's going on in the image. The idea being, that if the image bounces off the screen, cleanly, with just ...
- Fri Nov 03, 2017 11:47 am
- Forum: Gallery
- Topic: Horsehead Nebula
- Replies: 6
- Views: 6046
Re: Horsehead Nebula
At this stage it's good to see the noise, as it tells us a lot about the image. We may need to change our preprocessing workflow to improve noise reduction or change our imaging parameters. Longer exposure for instance.
- Thu Nov 02, 2017 8:37 pm
- Forum: Gallery
- Topic: Horsehead Nebula
- Replies: 6
- Views: 6046
Re: Horsehead Nebula
With that amount of data the image should blaze a hole in your screen and look fantastic. Just my opinion, but leave out the first night for now. Take some flats for the second night and do the preprocessing again. As it is, the image looks like it hasn't been wiped or stretched? Tip: at first, don'...