What are these dark patches in my test image
What are these dark patches in my test image
What could these dark round patches be?. Was just learning live stacking /plate solving etc in sharpcap so no flats or darks. shot through bortle8 and hazy clouds.
Any suggestions of steps to try and get rid of them in future images would be much appreciated. 2 months of no clear skies and counting.
Kind regards
Vince
Re: What are these dark patches in my test image
Hi Vince
Those look like dust particles somewhere in your set up. Somewhere on a lens or filter, then they show like this. If you see smaller, sharp edged spots, then they are on your sensor.
Two things that help the most:
1) Get a small bellow. I don't know the right English word for it. But it's the kind of small manual bellow that are used in photography to clean lenses with air. When used, you can get rid of 90% of dust particles on your lenses and/or filters.
2) Make flats. They "remove" the dark patches in your capture.
Menno
Those look like dust particles somewhere in your set up. Somewhere on a lens or filter, then they show like this. If you see smaller, sharp edged spots, then they are on your sensor.
Two things that help the most:
1) Get a small bellow. I don't know the right English word for it. But it's the kind of small manual bellow that are used in photography to clean lenses with air. When used, you can get rid of 90% of dust particles on your lenses and/or filters.
2) Make flats. They "remove" the dark patches in your capture.
Menno
Re: What are these dark patches in my test image
Hi Menno,
Thanks for your tips on getting rid of these. I will give them a try.
kind regards
Vince
Thanks for your tips on getting rid of these. I will give them a try.
kind regards
Vince
Re: What are these dark patches in my test image
Vince
Menno's bellows suggestion = Rocket Blower
https://www.amazon.co.uk/KamKorda-Compr ... 717&sr=8-3
I have one.
Dave
Menno's bellows suggestion = Rocket Blower
https://www.amazon.co.uk/KamKorda-Compr ... 717&sr=8-3
I have one.
Dave
Re: What are these dark patches in my test image
You're welcome Vince.
And yes, that what Dave is showing is what I mean. It is by far my most useful cheap piece of equipement
Menno
And yes, that what Dave is showing is what I mean. It is by far my most useful cheap piece of equipement
Menno
Re: What are these dark patches in my test image
Hi Menno and Dave,
Thanks for your guidance. Much appreciated.
Vince
Thanks for your guidance. Much appreciated.
Vince