 Observations of CHIRON by Denis Bergeron, Val-des-bois, Quebec, Canada        
(E-MAIL: bergeron@achilles.net)                                               
                                                                              
Night of April 02th to April 03th, 1995                                       
                                                                              
Hello dear friend astronomer,                                                 
                                                                              
This is my fifth report of observation about CHIRON and my best session.      
                                                                              
My astronomical equipment is a Meade SCT LX-200 10'' F10 telescope with       
a telecompressor lens to reduce my f/ratio to about F6.0 and a SBIG ST-6      
CCD camera at prime focus. I also use a CCD SBIG ST-4 at prime focus of       
my piggyback  SCT telescope 4'' F10 to autoguide my Meade. All CCD            
pictures were exposed 5 minutes each. I had taken 37 exposures during         
this session. My first exposure was taken on April 02th 1995 at 20h35         
EST and my last picture on April 03th at 01h00 EST. No filter was used.       
The sky was beautiful.                                                        
                                                                              
During this observation session, I have taken 5 dark frames of 5 minutes.     
In the end, I took a flat field image. The following days, I averaged my      
dark frames and I calibrated (dark subtract and FF corrected) all my          
pictures. With my software, I add up 37 images centered on stars to           
create a picture showing CHIRON'S MOVEMENT between stars (see                 
CHIRON-1.FIT) and another picture centered on CHIRON to show CHIRON alone     
(see CHIRON-2.FIT). I haven't detected any evidence of COMA around CHIRON.    
A kind of weak nebulosity appears in my images around Chiron but I think      
it could be caused by background noise. I don't find any reports from         
other observers to confirm or infirm my observations                          
                                                                              
I include images in FITS and TIFF . The pictures in FITS format are the       
result of the addition of my 37 images (averaged). Use these images if        
you wish analyse them. The TIFF pictures are the same images but              
processed with my image processing software. I include an ANIMATION of        
CHIRON in the sky (CHIRON.FLI). To see the blink effect, try a software       
such as AUTODESK ANIMATION  (AAPLAY) capable to read FLI files. Remark        
the presence of an asteroid in upper left part of the image above Chiron      
(near the center).                                                            
                                                                              
I use Chiron's ephemerides supplied by CPC. They are very precise. If         
you wish to find Chiron easily, use software with the GUIDE STAR CATALOG      
such MEGASTAR, THE SKY or others. Plot the position of Chiron on the          
chart and try to identify the area where Chiron is. Be patient!               
                                                                              
Don't expose your images more than 10 minutes. I detect a slight shift        
in my images. It's best to take many 5mn images and add them up to            
increase the S/N. Be careful to don't saturate the pixels. If you have        
images of Chiron, please prepare the best ones and send a copy of them        
to CPC. I'm very interested to look at them.                                  
                                                                              
See my others reports                                                         
                                                                              
Bye