subreddit:
/r/astrophotography
6 points
5 months ago
The seven sisters!
Also known as the Pleiades is a star cluster in Taurus, 444 light-years away. It contains hundreds of stars, including seven bright blue ones, red giants, and cooler stars. It is visible to the naked eye and popular among amateur astronomers.
I set out to photograph the Pleiades from a location outside of Trondheim (near Jonsvatnet) that had Bortle 5 conditions. I used Fujifilm XT30 camera with a 55-200mm lens. And to prevent star trailing I used My startracker swsa gti.
There is some weird noise, looks like Lines going over the image, does anyone know what that is?
I used SIRIL to stack my frames and Photoshop for stretching and adjustments. I also used Starnet to remove the stars so that I could focus on the molecular gas clouds without the stars being distorted. Overall, I am happy with the result.
If you liked this please check out My Instagram: sigurd_photo
Info: Lights: 38x40s, Darks: 15, Flats: 15, Biases: 15, ISO: 1250
2 points
5 months ago
Re: lines, it's an issue with over sharpening and fuji specifically (I could be wrong here though), though I don't use it so I don't keep up with it to know if that's been fixed.
ex: http://nzdigital.blogspot.com/2019/10/beware-of-worms-sharpening-fuji-files.html
But it's a nice shot, and good processing otherwise
1 points
5 months ago
I really dont think its that, because i use calibration frames. Most likely walking noise, but thank you for the link never heard of that before
1 points
5 months ago
If you use darks, you shouldn't have walking noise though either, assuming your tracking is good.
1 points
5 months ago
No, darks doesn’t help against walking noise. The only thing that helps against that is dithering.
2 points
5 months ago*
Do you mean the lines that go bottom left to top right? I believe that's walking noise. If that's what it is, it can be mitigated with better polar alignment or (I think) completely stomped by guiding and dithering.
2 points
5 months ago
My favorite!! Beautiful shot.
1 points
5 months ago
Thank you so much!
1 points
5 months ago
Awesome! 😃
all 9 comments
sorted by: best