From another topic:
http://www.iceinspace.com.au/forum/s...07#post1099507
Quote:
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Kevin wrote: The black lines, I think they are some kind of EMF running along the cable from camera to PC. You could try running the cable through some ferrite beads. Some cables have ferrite beads pre-installed.
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Kevin, I read many posts in many foruns about this weird line ou similar weird line from bright stars.
None shows a tip or solution. Nor Canon has solved that problem with repairs.
The main issue is with bright stars and a vetical line. I didn't see it with my canon, up to now. It seems don't be my problem. See the photos I did to test the position of Coma corrector because of reflex, some time ago.
I saw that this horizontal black line is present in other capture of M83 that I did at July, 03.
If it has origin on cable USB ... I can not do many things. The cabel is long, and must be long. I can try the ferrite, but ... I really have doubt if it will solve the problem.
Althougt my horizontal line is different from vertical line from bright stars. It worth try !
Did you get some information about it or you think that ferrite will solve the problem ?
As there isn't any tip at the foruns to solve those weird lines... It seems to be a problem of camera model:
Canon T3 - 1100D has and is problem !
http://www.cloudynights.com/ubbthrea...Number/5027211
http://stargazerslounge.com/topic/20...s-below-stars/
http://stargazerslounge.com/topic/17...ars-eg-in-m45/
http://www.dpreview.com/forums/thread/3535349
http://www.webastro.net/forum/showthread.php?t=92951
As this line only appears when I strech too much the photo ... perhaps it will not be a big problem.
My old age says: if you can not win ... surrenders !
First photo: Canopus - single frame - ISO 6400 - 16 seconds - RAW converted to JPG
Second photo: Canopus - single frame - ISO 6400 - 16 seconds - DSS - streched in Photoshop.
note: all problem has a solution. When a problem hasn't solution... it is not a problem. It is a real fact: immutable reality.
So, I haven't problem with my Canon. I just have a Canon... 1100D ... with an weird line attached !