VdB 152 + LBN 528 nebular complex 

Click on the image for a higher res version

VdB 152 nebular complex is a very faint object in Cepheus, at about +70°N declination. While usually the name VdB 152 is used to refer to the whole nebula, that catalog numer refers only to the blue reflection nebula (here on the right). Instead the wider and reddish nebula is the brightest part of LBN 528 witch extends for about 30 light years at the estimated distance of 1300 l.y.. While the color of the first one is due to the color of the blue star inside, the reddish color is due mainly of the red emission of the dust clouds excited by the ultraviolet radiation from nearby stars. The red nebula below is LBN 538, associated with a faint blue halo.
To image this field I've invested two full nights, collecting 6.5 hours of exposure (consider that June nights are quite short).

Technical Data
Optics TEC 140
Focal Length
1011 mm
Focal Ratio f/7.2
Exposure Time 6h30m (single exp of 10 min)
CCD Canon EOS 5D with Baader filter
Sensitivity 800 ISO
Location Bogli (PC, Italian Apennines) at 1350 m height
15-16 June 2012
Mount Gemini G-41
Tracking Lodestar on an 80mm f/5 refractor
Temperature and humidity T= +10°C, RH=from 50 to 100%
Sky brightness at zenith (with SQM-L) 21.2-21.4 mag/arcsec^2
Notes .

HTML Editing and Publishing by Lorenzo Comolli. Email me at comolli@libero.it.
Back to Main Page