Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 189  ·  NGC 225  ·  VdB4
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vdB 4, LDN 1302, Stock 24, Dobashi 3724, NGC 225 (oc); Cassiopeia, Thomas V. Davis
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vdB 4, LDN 1302, Stock 24, Dobashi 3724, NGC 225 (oc); Cassiopeia

Getting plate-solving status, please wait...
vdB 4, LDN 1302, Stock 24, Dobashi 3724, NGC 225 (oc); Cassiopeia, Thomas V. Davis
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vdB 4, LDN 1302, Stock 24, Dobashi 3724, NGC 225 (oc); Cassiopeia

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Description

vdB 4, LDN 1302, Stock 24, Dobashi 3724, NGC 225 (oc); Cassiopeia

Astro Systeme Austria N12 f/3.5 astrograph (Lum)

Tele Vue 127is f/5.2 refractor (RGB)

KAI-11000M; SBIG STL (Lum), FLI Microline (RGB)

Total Exposure Time: 13+ hours; LRGB 310:160:160:160 minutes, unbinned

September 2008, Inkom, ID

Comments: vdB 4 is reflection nebula number 4 in Sidney van den Bergh's Catalog of Reflection Nebulae, 1966. Taken and released in 2008, this image was one of the first of vdB 4 published on the internet.

vdB 4: Size (arcmin): 6 by 4

Type: illuminating star inside nebula

Surface brightness: faint

Color: blue

Absorption: moderate

Illuminating star ID1: BD+61 154

Mag. of illuminating star: 10.64

Spectral type of star: Beq

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vdB 4, LDN 1302, Stock 24, Dobashi 3724, NGC 225 (oc); Cassiopeia, Thomas V. Davis