Fr 2-3: An Ultra Faint PN in Caelum (Bray Falls)

Celestial hemisphere: Southern · Constellation: Caelum (Cae) · Contains: HD30669 · HD30733 · HD30905 · HD30918 · HD30951 · HD30984 · HD31115 · HD31128 · HD31185 · HD31332 · HD31341 · HD31348 · HD31358 · HD31359 · HD31369 · HD31406 · HD31445 · HD31446 · HD31447 · HD31560 · HD31572 · HD31639 · HD31701 · HD31718 · HD31850 · HD31869 · HD31927 · HD31938 · HD31939 · HD31957 · And 23 more.

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Fr 2-3: An Ultra Faint PN in Caelum

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Fr 2-3: An Ultra Faint PN in Caelum

Fr 2-3 is an extremely faint nebula in the constellation Caelum, to my knowledge this is the first photograph of it ever taken. I ran across Fr 2-3 while doing some Oiii surveys of the Orion area last year. This showed up as an interesting signal, and so I parked the telescope here for a couple weeks to get a better look at it.

The only information of note about this nebula on HASH comes from a note made in 2020 by Sakib Rasool: "Might be an outlying part of the Orion-Eridanus superbubble".

From this new imagery, I think it is more likely to be isolated from the superbubble structure. The central star of this nebula is MCT 0455-2818, a well studied white dwarf star.

Morphologically it reminds me a lot of StDr98

This nebula was very tough to edit, it is excruciatingly faint! I hope you all enjoy it.

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Status	Advanced success
Started	...
PixInsight job	JU4PY6N0UYYTU6XFUTOS5RVS8IXIFNCI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	04h56m52s.30
RA (top/left)	04h45m47s.29
RA (top/right)	05h03m13s.73
RA (bottom/right)	05h07m48s.35
RA (bottom/left)	04h50m45s.26

Dec (center)	-28°06′08″.7
Dec (top/left)	-28°44′25″.5
Dec (top/right)	-30°12′00″.7
Dec (bottom/right)	-27°24′25″.8
Dec (bottom/left)	-25°58′53″.2

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Fr 2-3: An Ultra Faint PN in Caelum

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