Image Acquisition Information
Telescope: 16" RCOS Richey Chretien Telescope (ion milled at 6/9)
Camera: SBIG STL-6303 M
Guiding: SBIG AOL, Astrodon MOAG AOG (SBIG 237
Filters: Astrodon L, R, G, B, Ha, SII, OIII
Mount: Software Bisque Paramount ME
Acquisition Programs: The Sky,CCDAutopliot III, CCD Soft.
Processing Programs: CCDStack, Maxim DL, Photoshop
Date: June 14-June 25, 2008
Time: 18x20 min ( 6
hours) each for each of L, R, G, B, Ha, SII and OIII:
Total of 42 hours imaging time.
Processing: CCD Stack and PhotoShop CS/3
Image Infornmation: This is
a composite of the NB and LRGB images. The image represents a total of 42 hours of data form 7 filters. As
previously noted, IC 1318 is a large emission nebula surrounding Sadr, within Cygnus the Swan.
The northern section, also known as the Butterfly nebula (IC 1318b) has a dark nebulosity which bisects it (this image was
taken near this region). IC 1318b It is primarily made up of ionized hydrogen but there is a significant SII component.
The nebula is believed to be about 4000 light years distant. This image, spanning about about 15 arc-min, and located
near the dark nebulosity, is just a small part of this large, 1.5 degree, nebula (IC 1318a, b and c).
Additional Comments: The Narrow Band image was processed using CCDStack, producing a Narrow Band image (Hubble Palatte).
The Narrow Band image was created by unequally weighting the SII, Ha and OIII images (the green H-alpha channel would otherwise
overwhelm the image) and assembling in CCDStack. The LRGB data was produced as an RGB in CCDStack which was blended
using layers in Photoshop CS/3, with the Luminance image. The NB and LRGB imges were layered in Photoshop CS/3 using
"soft light". The balance did slightly favor the NB image, which contained more H-alpha detail/data. Further data
stretching, high pass filtering and background smoothing was performed with Adobe Photoshop CS/3.
Return to Image Gallery: Page 1
Return to Lost Valley Observatory Homepage