NGC 7000 Canon 300mm 1H45 (Benoit SAINTOT)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 56 Cyg · 57 Cyg · 60 Cyg · 62 ksi Cyg · B349 · B353 · B355 · IC 5070 · LBN 332 · LBN 334 · LBN 338 · LBN 341 · LBN 342 · LBN 343 · LBN 348 · LBN 349 · LBN 350 · LBN 353 · LBN 354 · LBN 356 · LBN 359 · LBN 371 · LBN 373 · LBN 378 · LBN 384 · LBN 385 · LBN 387 · LBN 392 · LDN 933 · LDN 935 · And 12 more.

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NGC 7000 Canon 300mm 1H45

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NGC 7000 Canon 300mm 1H45

This is a shot of NGC 7000, with a l enhance eos clip filter, and a simulated HSO via pixinsight.
I still have these weird shapes on stars, and this bad halo.

I can't figure out where it comes from. I don't know if this is due to the lens ( Canon 300mm F/4, widest aperture), or the l-enhance Clip Filter.
I should capture stars only on a UV-IR cut version, and blend it with the background shot with the l enhance, but it does require framing again, and as this is a non automated setup , fully nomad and stand alone, I'm trying to keep it simple and one shot.

Any suggestions about these issues and how to overcome it are welcome.

Ben

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Status	Advanced success
Started	...
Astrometry.net job	5112485
PixInsight job	GW8CJ8MW109W6MP2W1OKL4NXY1V84CEE
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h58m42s.23
RA (top/left)	21h05m50s.13
RA (top/right)	20h44m28s.61
RA (bottom/right)	20h52m06s.25
RA (bottom/left)	21h12m49s.19

Dec (center)	+44°23′25″.1
Dec (top/left)	+46°36′22″.7
Dec (top/right)	+44°34′33″.5
Dec (bottom/right)	+42°08′48″.1
Dec (bottom/left)	+44°05′40″.7

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NGC 7000 Canon 300mm 1H45

NGC 7000 Canon 300mm 1H45

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NGC 7000 Canon 300mm 1H45

NGC 7000 Canon 300mm 1H45

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