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 with FLR)

                               Filters:        Astrodon 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 3, 2008                              

                               Time: 21 x20 min ( 7 hours) for each of Ha, SII, OIII

                               Total of 21 hours imaging time.                              

                               Processing:  CCD Stack and PhotoShop CS/3

 

 

Image Information:  Life can be stranger than fiction.  We believe this nebula to be 'co-discovered' (definately imaged and noted, as to "discoverd", this will depend on the finding of the IAU), first by Dave Jurasevich (of the Mt Wilson Observatory) on July 6, 2008 and submitted by him to the IAU on July 10, 2008.  His images were not posted at the time of our independant "discovery" (July 17, 2008).  He deserves recognition as being the first to image and submit this object.  You can learn about Dave's excellent work at www.starimager.com and about his initial discovery of this nebula at http://tinyurl.com/5q4qnu .  Again, we all wish to note the term "discovery" is technically premature, as the final findings of the IAU are not yet available. 

 

     This "possible undesignated" "bubble-like" nebula was first noticed (by our group) as a possible object by Dr. Mel Helm, after inspecting an HII region near the Crescent Nebula, and later confirmed by myself in the image noted above.  It is an extremely faint object which to the best of our knowledge, as of this posting, has no designation.  It is felt to be either: 1)  An unusually symmetrical planetary nebula, ie, a small dying star throwing off it's atmosphere as it becomes a white dwarf (such as Abell 39) or 2)  A Wolf-Rayet Nebula, such as the Crescent Nebula or The Bubble Nebula (NGC 7635).  These are formed by massive stellar winds from a "Wolf-Rayet" star . Wolf-Rayet stars are believed to be normal, evolved massive stars with massive stellar winds.  These stellar winds evidently form when the CNO cycle is active, and the stars spectrum is dominated by ionized Helium and Nitrogen.

 

The following links are also available:

   

1)   For details regarding how this "Bubble-Like" Nebula was first found, you can go to the following link for more information: 

 

Summary/Review of the Undesignated Nebula in Cygnus

 

2)  The approximate coordinates of this "Bubble-Like" Nebula are

                 RA: 20 15 22.16 and Dec +38 02 41.9. 

    To see the location of this object, in relation to the Crescent Nebula (NGC 6888 or Caldwell  27), please follow the following link:

 

Original images: Location of the Undesignated "Bubble-Like" Nebula

 

3)   A few weeks after Dave Jurasevich submitted his image tot he IAU (as apparntly the first to identify the object), we also submitted it to the IAU.  This link takes you to a page where we respond to their questions.  Since this was done we have not heard back form the IAU.  The link is:   http://www.lostvalleyobservatory.com/iaupncyg

 

Processing Information:  The image is a layered  Hubble Palette narrrow band image assembled in CCDStack. The first layer contained nothing under the "Luminance channel", whereas the second contained the Ha data under the luminace channel (which highlights the fine Ha nebulosity data).  These two layers were combined with the layers option in Photoshop CS/3, optimizing the best characteristics of each layer.  Further processing was accomplished in Photoshop CS/3 (curves and levels, shadows/highlights, high pass filtering).