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      VdB 4 & NGC 225
Reflection Nebula in Cassiopeia
  RA:00h 43m 42s  Dec: +61 47' 00"
  Distance: ~2100 ly Size: 12 arcmin


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Location & Date
Backyard, Abbott Observatory- Long Island, NY,  August, 2020
Telescope
TMB130SS F/7 APO, Moonlite focuser, Losmandy G11 Gemini
Image scale 1.54 arcsec/pixel
Camera
SBIG ST-10XME
Baader  L,R,G,B filters
CCD temp -10C
Exposures
Lum-12x5m  Red-12x5m  Green-12x5m Blue-12x5m Bin 1x1
Planning & Acquisition
Image planning - Sequence Generator Pro
Image acquisition - Sequence Generator Pro w/PinPoint & PHD2 (guiding)
Processing
CCDStack - calibration, debloom, align, normalize, combine, deconvolution
Adobe CS4 - L+RGB Image composition, Noise reduction, JPEG conversion
VdB4 is a dark reflection nebula within open star cluster NGC 225 in Cassiopeia. Discovered by Caroline Herschel in 1783, NGC 225 is estimated to be a young 10 million years old. The variable star V594 Cas. is causing the dust to illuminate with a blue hue. VdB4 is thought to be the remains of the nebula that formed the open star cluster.