Bernd Brinkmann´s

Comet 1999 S4 (LINEAR)

	date (yy/mm/dd)	time (UT)	exp. time (min/sec)	camera / telescope	film / CCD	filter	Remarks
compare this image with the Guide 7.0 map: stars up to 11.7 mag are visible, but no comet thin clouds are crossing the image very low at the western horizon, 3 deg above the young moon, fov 53' x 35.5'	00/08/03	20:45:03 - 20:51:09	10 x 20 sec	80 mm Refractor f/5 f=400 mm	Starlight SX	---	processing with MIRA A/P: dark, flat register on stars, combine (sum) rescale, gamma correction write TIFF processing with Photoshop: clipping save as JPEG
	00/07/21	21:34:00 - 21:49:00	32 x 20 sec	10.5 cm f/10.5 Maksutov telelens f=1100 mm fov = 12x18 arc min gradient at left and lower side are due to edge of field moving in because of centering on the comet	Starlight SX	---	processing with MIRA A/P: dark, flat register on comet, combine (sum) rescale, gamma correction with false colours, write TIFF processing with Photoshop: clipping save as JPEG bright star at upper right is GSC 3810314 with 10.7 mag
	00/07/20	21:50 - 21:59	18 x 20 sec	C8 + focal reducer	Starlight SX	---	processing with MIRA A/P: dark, flat register on comet, sum rescale write TIFF processing with Photoshop: log scaling clipping save as JPEG
	00/06/30	23:10:18 - 23:59:25	40 x 60 sec	100 mm Genesis refractor f / 5	Starlight SX	---	processing with MIRA A/P: dark, flat register on comet, sum rescale write TIFF processing with Photoshop: log scaling clipping save as JPEG

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