Hi David,
A very nice result showing the power of small refractors.
I think you could probably go a bit longer (and deeper) if you're doing some short subs for HDR.
We imaged this target from SRO with a FSQ-106ED and QSI-683 and got some bloody great big spikes through some of the stars. I think I can see hints of this effect on a couple of your stars. Do you have the integrated OAG? I was told that this was a "feature" of the QSI-583 and QSI-683 with OAG.
Cheers,
Rick.
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