Bubble Nebula and surroundings in HOORGB - NGC 7654, M52 and Nova V1405 Cas (Massimo Di Fusco)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · LBN 548 · LBN 549 · LDN 1231 · M 52 · NGC 7635 · NGC 7654 · PK112-00.1 · Sh2-162

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Bubble Nebula and surroundings in HOORGB - NGC 7654, M52 and Nova V1405 Cas

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Bubble Nebula and surroundings in HOORGB - NGC 7654, M52 and Nova V1405 Cas

In this picture we can see an overall view a little atypical of the Bubble Nebula (NGC 7635 or C11, left) with the salt and pepper cluster on the right (M52 or NGC 7654) and the very red Nova Cassiopeia 2021 (V1405 Cas), discovered on March 18 this year, to complete the picture at the top center.

NGC 7635 is a beautiful diffuse nebula 11000 light years away from us, while M52 is an open cluster 4500 light years away.

The Nova V1405 Cas deserves a separate mention, a new star that literally lit up a few months ago in the constellation of Cassiopeia and that becomes brighter with each passing day (currently it is visible to the naked eye under not light polluted skies). At the origin of the phenomenon there is a pair of stars, a normal one and a white dwarf which, having an enormous force of gravity, has begun to attract towards itself the gas of the companion star and the Hydrogen, falling on the white dwarf, is heated to the point of triggering the nuclear fusion reaction that generates the glow. All this, however, happened 55 centuries ago, being the binary star system 5500 light years away, i.e., at the time of the ancient Egyptians, and only in these days the light generated is reaching our telescopes and our sensors.

Original
B
Final
C

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Status	Advanced success
Started	...
Astrometry.net job	5510506
PixInsight job	OGI98T1DMCC3Z2MNZVGQVSKD57ODNOP6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h22m46s.91
RA (top/left)	23h21m27s.91
RA (top/right)	23h28m57s.29
RA (bottom/right)	23h24m10s.74
RA (bottom/left)	23h16m41s.74

Dec (center)	+61°20′11″.5
Dec (top/left)	+60°36′07″.2
Dec (top/right)	+61°29′42″.6
Dec (bottom/right)	+62°04′29″.3
Dec (bottom/left)	+61°09′44″.6

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Bubble Nebula and surroundings in HOORGB - NGC 7654, M52 and Nova V1405 Cas

Bubble Nebula and surroundings in HOORGB - NGC 7654, M52 and Nova V1405 Cas

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Bubble Nebula and surroundings in HOORGB - NGC 7654, M52 and Nova V1405 Cas

Bubble Nebula and surroundings in HOORGB - NGC 7654, M52 and Nova V1405 Cas

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