vdB 1 & V633 Cas (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: VdB1

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vdB 1 & V633 Cas

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vdB 1 & V633 Cas

This image consists of two very different types of objects, a blue reflection nebula (right) and 3 Herbig-Hero objects (left), all located in the constellation of Cassiopeia.

The beautiful blue reflection nebula is the very first entry in the van den Bergh (vdB) catalog of stars surrounded by reflection nebulae. The nebula is located 1600 light years away and is 3 light-years across. It reminds me a bit of the Pleiades, with its bright blue stars and a misty nebula which has interesting subtle lines and arcs.

Herbig-Haro objects are some of my favorite deep space objects. Although tiny and hard to see clearly, they are a bit like snowflakes in that the shape of each one is unique. Both of the subject stars on the left side are young, active variable stars, still surrounded by a dark dust cloud left over from their birth. The brightest of these two stars is V633 Cassiopeiae, with Herbig-Haro objects HH 161 and HH 164 forming the horseshoe-shaped loop below it. The other star just above V633 is V376 Cassiopeiae, which is creating Herbig-Haro object HH 162. The stellar gas releases creating these shock waves of arcs and loops must be enormous. I like how these gas releases have cleared out areas of dust around the two stars, especially below V633 where three background stars are now clearly visible through the dust cloud.

The areas around these Herbig-Haro objects are one of the few deep sky structures which change on a timescale of years. I am eager to image this area again soon in a number of years to see if I can notice any change.

The refractors!
Cloudy Nights
ZWO ASI1600MM/QHY163M
vdB Reflection Nebula

Reflection Nebulae
Secret Deep Catalog (Complete)
vdB Catalog (124/159)
YSOs (Young Star Objects)

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Status	Advanced success
Started	...
Astrometry.net job	2329313
PixInsight job	BUAL0HV0S83PCKA1HLGDUF0CH9G26AOK
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h11m08s.501
RA (top/left)	00h11m43s.955
RA (top/right)	00h09m29s.248
RA (bottom/right)	00h10m33s.406
RA (bottom/left)	00h12m47s.770

Dec (center)	+58°47′49″.87
Dec (top/left)	+58°59′49″.59
Dec (top/right)	+58°47′30″.58
Dec (bottom/right)	+58°35′47″.80
Dec (bottom/left)	+58°48′03″.10

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vdB 1 & V633 Cas

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