IC 1805 in Ha and OIII light (Bicolor Technique)


       

Please click here or on image for a higher resolution
  Please click here for a horizontal view (Small image &Larger  image).
 


Characteristics:
Magnitude:  6.5 (open star cluster)
Size: about 60'
Distance: 6,150 light years
RA: 2h 32m 41s
Dec: 61 degrees 27' 25"

Description:
IC 1805 is a young star cluster surrounded by Ha emitting nebulosity, located in the constellation Cassiopeia.  This region is also known as the "Heart Nebula," since it resembles a heart on a wider field view.   I have chosen to portray this FOV in the vertical orientation, since the detailed dust lanes at the bottom of the image convey a sense of upward motion.  Please click here for more information about this object.

Photographic Details:

Date:  August 26, 2005 (Ha data); August 27, 2005 (OIII data).
Scope:  Takahashi FS102 at f8, on the G11 Losmandy Mount.

Autoguider:  SBIG STV with e-finder.
Camera:  Maxcam CM10.
Filter:  Astrodon Ha filter (6 nm bandpass); Astronomiks OIII filter (15 nm bandpass).

Exposures:  Ha filter, 24 x 10' each unbinned.  OIII filter, 24 x 10' each unbinned.  Total exposure: 8 hours.
Conditions:  Temperature 58-75 degrees F; above average transparency, below average seeing; calm; clear. 
Post-processing:  This is an Ha:(Ha:sG:OIII) composite created with a  new technique that I developed for processing Ha/OIII narrowband images (i.e., without the SII component).  Please follow the link for a full description of the technique.  In the above image, the Ha was used as luminance, and the color was provided by the Ha:sG:OIII composite.


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