c/2001 HT50 (LINEAR-NEAT)


Date m1(m2) Diameter DC PA Observer
2003 MAR 21.41

14.0(15.0)

36.1"

 7/9

063/095

David Higgins - E14
0.25m SCT/ccd.... image/photometry via 0.25m SCT @ f/5; SX MX516 ccd @ 500 x 290 pixels, 1.98/pixel. 90 second exposure (3x30sec Added, unprocessed. Photometry via computer direct (Astrometrica).


Central Condensation with a broad diffuse curved tail that extends approx 3'.
  Image has been extensively stretched to show extent of tail.


Date m1(m2) Diameter DC PA Observer
2003 Mar 26.42 UT

12.4(13.3)

34.7"

 7/9

063/090

David Higgins - E14
0.25m SCT/ccd. image/photometry via 0.25m SCT @ f/5; SX MX516 ccd @ 500 x 290 pixels, 1.98/pixel. 90 second exposure (5x120sec Added, unprocessed. Photometry via computer direct (IRIS).


Central Condensation with a broad diffuse curved tail that extends approx 2'.


Date m1(m2) Diameter DC PA Observer
2003 Sep 03.80 UT

13.6(14.5)

26.0"

 6/9

063/090

David Higgins - E14
0.25m SCT/ccd. image/photometry via 0.25m SCT @ f/5; SX MX516 ccd @ 500 x 290 pixels, 1.98/pixel. 90 second exposure (5x120sec Added, unprocessed. Photometry via computer direct (IRIS).

Nice even diffuse coma with an obvious central condensation.


Date m1(m2) Diameter DC PA Observer
2003 Nov 28.54

12.6(14.1)

46.0"

 4/9

48"/148

David Higgins - E14
0.25m SCT/ccd. image/photometry via 0.25m SCT @ f/3.4; SX MX716 ccd @ 752x582 pixels, 2.02"/pixel. 30 second exposure, unprocessed. Photometry via computer direct (AIP4WIN).

Large bright coma with short fat tail although, as can be seen from the image at left, it appears the tail, sparse as it is, extends quite a distance to the right (east) of the nucleus.  This is a Median combined image from 12 x 30 second integrations (This is the reason the stars look washed out)


Date m1(m2) Diameter DC PA Observer
2003 Dec 06.57 UT

12.9(14.6)

39.5"

 5/9

Short/135

David Higgins - E14
0.25m SCT/ccd. image/photometry via 0.25m SCT @ f/3.4; SX MX716 ccd @ 752x582 pixels, 2.02"/pixel. 30 second exposure, unprocessed. Photometry via computer direct (AIP4WIN).

Large bright coma with very short fat tail probably obscured by the moonlight