Thread: M42 Again
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Old 21-12-2024, 07:46 PM
CaptainCook (Gary)
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Join Date: Apr 2024
Location: Sydney
Posts: 135
Trapezium

After the moon came up last night and I'd stopped O3 on another target, I thought I'd have a quick go on the trapezium to see what I could get at 1.1 arc s resolution (only previously ever used 2.1").

Results attached: few min of 5 s (left) versus 60 s data (right) for both pre (top) and post BXT (bottom).

Summary: 5 s data makes for a cleaner '4 star' (A,B,C&D) appearance even without BXT (note these are heavily cropped), as 1 min causes more bloating BUT if you do have BXT you can *just* start to see the much fainter 5th star (E) more clearly using the 60s data. I also tried to do a HDR combination of both for the wider image but tbh the 60s data was still better on its own overall.
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