Galaxy - M83

 Astrophotography details:

Film Hypered PJM-2 Ektapress Multispeed 640 film
Telescope/camera Meade LX-200 10"
F-ratio F/10 (Prime focus)
Exposure time 120 Minutes
AutoGuider Meade Pictor 201-XT
Autoguider exposure time 7 seconds
guide star Unknown
Date of Photo 2140 Hours local, 12 June 99
Location A dark site 55 miles south of Tempe, Arizona
Additional image processing Scanned same negative 4 times.  Averaged A and B.  Then averaged C and D. Then averaged the averages in Picture Window.  Additional contrast, brightness and sharpening operations then performed in Paint Shop Pro.  Additional enhancement:  Applied algorithm I developed in an image processing system I am constructing to bring out the dimmer part of the image without swamping the brighter parts of the image.  The algorithm includes an inverse exponential operator to allow this enhancement.  The data is on the film but bringing it out where it is visible to us requires some doing.
Posted  17 July 1999

Pretty good night out in the desert.  Warm.  Sky not as transparent as one might hope and "seeing" not exactly "stellar".  :-)  Minor front had passed through during the day.  Night was clear luckily.  Stars twinkled somewhat although not as bad as the previous night.

With enhancement, this begins to look worth posting.