Bernd Brinkmann´s

Comet 1998 W1 (Spahr)

	date (yy/mm/dd)	time (UT)	exp. time (min/sec)	camera / telescope	film / CCD	filter (IF=Interference)	Remarks
bad guiding	98/11/21	22:49:42	600 sec	120 mm refractor f / 5	Starlight SX	IF-Green + IR-block	processing with MIRA A/P: bias, dark, flat rescale write TIFF processing with Photoshop: log scaling clipping save as JPEG
							STScI Deep Sky Survey Scan as comparison
	98/11/21	22:39:00	300 sec	120 mm refractor f / 5	Starlight SX	IF-Green + IR-block	processing with MIRA A/P: bias, dark, flat rescale write FITS processing with Photoshop: open as 16 bit FITS log scaling clipping save as JPEG
	98/11/21	00:04:30	1800 sec	120 mm refractor f / 5	Starlight SX	IF-Green + IR-block	processing with MIRA A/P: bias, dark, flat rescale write FITS processing with Photoshop: open as 16 bit FITS log scaling clipping save as JPEG
							STScI Deep Sky Survey Scan as comparison
	98/11/20	23:48:40	600 sec	120 mm refractor f / 5	Starlight SX	IF-Green + IR-block	processing with MIRA A/P: bias, dark, flat rescale write FITS processing with Photoshop: open as 16 bit FITS log scaling clipping save as JPEG

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