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Thanks Leon, Chris, and Martin.
Alex. As you may or may not recall from earlier threads, I came into digital
imaging already in my 70s, and almost computer illiterate. As a consequence
I stuck to JPEGS and using in camera noise reduction, and do all my limited
processing in DSS. Because of this my subs take over twice as long as they
would if I took separate darks, and because of indifferent polar alignment accuracy the target would move out of frame if I tried 100 subs. With this
image I managed 70 subs, but part way through I remembered that I hadn't enabled in camera noise reduction, so many subs were useless.
I find it all very galling, as I had 54 yrs AP[film] before digital came along,
and I feel like a dunce. Incidentally, when imaging near a mains power supply
why don't you get a mains powered dummy battery from ebay for around $25.
raymo
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