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Comet LINEAR
Change of coma ( 18th - 28th July, 2000 )


18th july

19th july

20th july

21st july

22nd july

23rd july

24th july

25th july

26th july

27th july

28th july


Common data
Optics : Wright-Shcmidt camera, D=125mm , f.l. = 475mm , Fno = 3.8
Camera : Pictor 416XTE
Filter : Red (500-600nm)
Exposure : 90 seconds except 18th's image whose exposure time was 60 seconds
Image process :
1/1-1/2 intensity >> white
1/2-1/4 intensity >> black
1/4-1/8 intensity >> white
1/8-1/16 intensity >> black
1/16-132 intensity >> white
1/32-1/64 intensity >> black
1/64-1/128 intensity >> white
1/128-1/256 intensity >> black
1/256-1/512 intensity >> white
1/512-1/1024 intensity >> black
1/1024- intensity >> white

"1/1" means the maximum intensity of the comet

Each data :
22:23:00 18th July, 2000
22:25:00 19th July, 2000
22:33:00 20th July, 2000
22:11:00 21st July, 2000
22:43:00 22nd July, 2000
22:01:00 23rd July, 2000
21:54:00 24th July, 2000
21:55:00 25th July, 2000
21:57:00 26th July, 2000
22:18:00 27th July, 2000
22:09:00 28th July, 2000

PDT ( PDT = UT -7.0hr in summer )



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