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NGC 6823


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28 minutes ago, RaDec said:

That’s a great image. What length of exp did you use?

Thanks Keith. These are 600s exposures with a median value of around 550, which is really good. I wasn't getting median values as low as that with 300s exposures using my old 7nm filters.

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Makes me wonder if I should increase my exp when I use the AA 4nm dualband.

I generally use either 240s or 300s which worked well with my previous ZWO Duoband.

Worth a try if we ever get a clear night here again!

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4 hours ago, RaDec said:

Makes me wonder if I should increase my exp when I use the AA 4nm dualband.

I generally use either 240s or 300s which worked well with my previous ZWO Duoband.

Worth a try if we ever get a clear night here again!

If your guiding is good enough for 300s, it's certainly good enough for 600s. The only downside to 600s, is losing an image because of cloud etc. Losing a 300s image is OK, but a 600s hurts.

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