Image Acquisition Information
Telescope: 16" RCOS Ritchey Chretien Telescope (ion milled at f/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, Adobe Photoshop CS/3
Date: July 30-August 12, 2008
Time: 18 x 20 min ( 6
hours) for each of L, R, G, B, Ha, SII, OIII
Total of 42 hours imaging time.
Processing: CCD Stack and PhotoShop CS/3
Image Information: This possible undesignated Planetary Nebula is discussed with the previous image. Essentially this is
a composite image which shows a central and very blue star. Though the Addition of a NB image to the RGB data will
change the color of an object, the central star is also clearly blue, and about the only such object in the image, even with
our pure RGB images. To learn more about this central star and the assistance we received from Dana Patchick,
you can follow this link: Review of the Central Star.
This is a composite image of a layered NB image with RGB abd Luminance data. The NB image was first assembled in CCDStack using two methods. 1) The first was a Hubble Palette
image with nothing selected for the luminance channel. This produced an image with greater color variation and relative
star preservation. The ratios of SII, Ha and OIII were adjusted so that the green Ha signal did not overwhelm the image.
2) The second image was produced as noted above but also contained the Ha data under "Luminance". This brought
out the fine Ha detail, some of which was lost in bringing out the SII and OIII data in the first image (the same ratios
An RGB and Luminance image were then layered onto the NB image
in Photoshop CS/3 ('normal' mode with varied 'opacity'). Finally the image was
further processed in Photoshop CS/3 (curves and levels, shadows/highlights, and high pass filtering).