Re: [Utah-astronomy] Wow!!! (SLAS Maui imaging session)

Histogram notes on 1-16 Faulkes session images. With the entire range of analogue-to-digital-units (adus) (pixel value) in any one image, which adus histogram bands contain the nebulousity data? 

l_e_20100115_32_1_1_1.fits  HB 120s
http://lcogt.net/en/search/observation/43281+1+2757
Range -3000 to 3650 adus. 
Underexposed. Almost no detail between -50 and 125 adus.  
No useable information. 

l_e_20100115_31_1_1_1.fits  OIII 180s 
http://lcogt.net/en/search/observation/43280+1+2757
Underexposed. All nebulous data is between -15 to 250 adus. No neb data above 250 adus. 
Range -3250 to 6400 adus. 
Responds with star artifacts to wavelet 5 step with high no. 2 processing. 
Best structural resolution in all areas and especially at faint edges of cloud. Structure similar in HA and OIII image. 

l_e_20100115_30_1_1_1.fits  OIII 180s
http://lcogt.net/en/search/observation/43279+1+2757
Underexposed. All nebulous data is between -15 to 300 adus. No neb data above 300 adus. 
Range -3800 to 5234 adus.
No response to unsharp, deconvole or wave filters. 
Major features are similar in structure to red channel but more defined. Structure similar in HA and OIII image. 

l_e_20100115_29_1_1_1.fits HA 180s
http://lcogt.net/en/search/observation/43278+1+2757
Underexposed. Nebulous data is between -15 to 500 adus. Minor loss of central highlight between 500 and 600 adus.  No neb data in 600 to Max adus. 
Range -9200 to 6811 adus
No response to unsharp, deconvole or wave filters. 
Structure similar in HA and OIII image. 

RGB Set 3

l_e_20100115_27_1_1_1.fits Red 360s
http://lcogt.net/en/search/observation/43277+1+2757
All nebulous data is between 120 to 1100 adus. No neb data in 1100 to Max adus.
Range is -8000 to 38000 adus. 
Responds to wavelet 5 step no. 2 mid-low processing. 
Structure defined similar to OIII channel. 

l_e_20100115_26_1_1_1.fits Green 360s
http://lcogt.net/en/search/observation/43276+1+2757
All nebulous data is between 30 and 470 adus. No neb data in 470 to Max adus. 
Range -2940 to 11517 adus
Blue and green channels contain similar structural information, but the green channel is sharper in the faintest cloud edges. 

l_e_20100115_25_1_1_1.fits Blue 360s
http://lcogt.net/en/search/observation/43276+1+2757
All nebulous data is between 25 and 450 adus.  No neb data in 450 to Max adus.
Range -2650 to 12527 adus
Very minor improvement with artifact with wavelet 5 step no. 2 high.  No improvement seen using unsharp, Lucy Richardson.  
More diffuse cloud, different from and not containing structure of Red and OIII channels, is defined. 
Blue and green channels contain similar structural information, but the green channel is sharper in the faintest cloud edges.  

RGB Set 2

l_e_20100115_24_1_1_1.fits Red 360s
http://lcogt.net/en/search/observation/43275+1+2757
All nebulous data is between 125 and 1200 adus.  No neb data in 1200 to Max adus.  
Range -4550 to 31150 adus
Some improvement with wavelet 5 step no. 2 high, some improvement with unsharp mask, no improvement with Lucy Richardson deconvole.

l_e_20100115_23_1_1_1.fits Green 360s
http://lcogt.net/en/search/observation/43275+1+2757
All nebulous data is between 15 and 525 adus.  No neb data in 525 to Max adus.  500 to 525 adus begins center of nebulousity. 
Range -3000 to 18600 

l_e_20100115_22_1_1_1.fits Blue 360s
http://lcogt.net/en/search/observation/43275+1+2757
All nebulous data is between 25 and 500 adus.  No neb data in 500 to Max adus.
Range -1800 to 12750

RGB Set 1

l_e_20100115_21_1_1_1.fits Red 360s
http://lcogt.net/en/search/observation/43275+1+2757
All nebulous data is between 115 to 1100 adus. No neb data in 1100 to Max adus.
Range is  0< to 36000 adus

l_e_20100115_20_1_1_1.fits Green 360s
http://lcogt.net/en/search/observation/43275+1+2757
All nebulous data is between 0 and 500 adus.  No neb data in 50 to Max adus.

l_e_20100115_19_1_1_1.fits Blue 360s
http://lcogt.net/en/search/observation/43275+1+2757
All nebulous data is between 0 and 500 adus.  No neb data in 500 to Max adus.

Clear Skies - Kurt