Rosette nebula showing extended nebulosity (Lee)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: 12 Mon · 13 Mon · IC 448 · LBN 930 · LBN 931 · LBN 932 · LBN 936 · LBN 941 · LBN 943 · LBN 947 · LBN 948 · LBN 949 · LBN 951 · LBN 952 · LDN 1625 · LDN 1631 · LDN 1637 · Monoceros · NGC 2236 · NGC 2237 · NGC 2238 · NGC 2239 · NGC 2244 · NGC 2246 · NGC 2252 · NGC 2269 · PK208+01.1 · Rosette A · Rosette B · Rosette Nebula · And 3 more.

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Rosette nebula showing extended nebulosity

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Rosette nebula showing extended nebulosity

I thought this had been bubbling away longer but I started shooting the Rosette with my Samyang and 183MM at the start of February. I captured Ha and OIII but don't yet have an SII filter in that rig so asked @Adrenaline if he had any data that covered this FOV and he managed to find something from his 2019 archives! (Thanks again Adrian).

This is 5.6h Ha, 2.3h OIII and 50m SII. I couldn't use the stars from the SII so had to be creative in processing. It was fascinating to see the extra nebulosity streaming off the Rosette (typically seen in widefield images including the Cone nebula) and the OIII master had some good signal in the top left alongside the Rosette itself.

Thanks for looking.

Captured with an ASIAIR Pro, pre-processed in APP and processed in Pixinsight.

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Status	Advanced success
Started	...
Astrometry.net job	5514173
PixInsight job	VQJLH3HV37CZ77PAIKI257SQVQSFU9SB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h36m59s.35
RA (top/left)	06h47m15s.36
RA (top/right)	06h26m49s.90
RA (bottom/right)	06h26m47s.28
RA (bottom/left)	06h47m05s.39

Dec (center)	+05°32′20″.9
Dec (top/left)	+07°23′13″.1
Dec (top/right)	+07°25′26″.1
Dec (bottom/right)	+03°40′35″.9
Dec (bottom/left)	+03°38′22″.7

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Rosette nebula showing extended nebulosity

Rosette nebula showing extended nebulosity

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Rosette nebula showing extended nebulosity

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