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What about looking at the problem through the other end of the telescope, [sort of pun intended]. I've never seen streaks anything like those, so am I doing anything differently to you guys that do get them.
Being an old gas emitter, I am stuck for evermore at the newbie level
as far as the digital side of things is concerned.
I use inbuilt high ISO noise reduction and long exposure noise reduction.
No separate darks, flats, or biases.
I mostly use the camera's own battery for runs of subs[ say 50-60
of 30-90 secs], using my 240v adaptor only for longer runs than that.
I don't normally guide, just manually very occasionally.
I very rarely have a computer connected to my rig.
I either put subs into DSS of equal duration and ISO, or more often, a
mix of both duration and ISO.
I always use daylight colour balance.
I focus before the run using Live view, and only use the LCD screen
about every 20 or so subs, to recheck the focus/ tracking.
I use the default settings in DSS.
I don't know if any of that might contain a clue or two.
raymo
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