Comet C/2012 S1 (ISON)

 

2013-01-07

TEL 0.205-m f/5.5 reflector + CCD SBIG ST8XME unfiltered, CCD@-25°C.

f=1125mm, field 42.1‘x28.1’, 1.65’’/pixel, white circle diameter = 300 pixels = 495’’=8.25’.

North up, East left. Aperture radius in Astrometrica = 4 pixels = 6.60’’.

5x120s from 22:04UT to 22:15UT, recentered on comet with Astrometrica.

NET NOMAD

    CK12S010  C2013 01 07.92049 07 44 19.68 +31 02 37.7          15.7 N     511

    CK12S010  C2013 01 07.92197 07 44 19.58 +31 02 37.8          15.6 N     511

    CK12S010  C2013 01 07.92344 07 44 19.50 +31 02 38.0          15.6 N     511

    CK12S010  C2013 01 07.92492 07 44 19.40 +31 02 38.2          15.6 N     511

    CK12S010  C2013 01 07.92639 07 44 19.30 +31 02 38.5          15.6 N     511

2013-01-08

TEL 0.205-m f/5.5 reflector + CCD SBIG ST8XME unfiltered, CCD@-25°C.

f=1125mm, field 42.1‘x28.1’, 1.65’’/pixel, white circle diameter = 300 pixels = 495’’=8.25’.

North up, East left. Aperture radius in Astrometrica = 4 pixels = 6.60’’.

5x120s from 20:37UT to 20:47UT, recentered on comet with Astrometrica.

NET NOMAD

    CK12S010  C2013 01 08.85978 07 43 19.73 +31 05 00.4          15.5 N     511

    CK12S010  C2013 01 08.86126 07 43 19.63 +31 05 00.3          15.6 N     511

    CK12S010  C2013 01 08.86273 07 43 19.54 +31 05 00.9          15.7 N     511

    CK12S010  C2013 01 08.86420 07 43 19.44 +31 05 00.9          15.6 N     511

    CK12S010  C2013 01 08.86568 07 43 19.33 +31 05 01.1          15.6 N     511

2013-03-09

TEL 0.205-m f/5.5 reflector + CCD SBIG ST8XME unfiltered, CCD@-30°C.

f=1125mm, field 42.1‘x28.1’, 1.65’’/pixel, white circle diameter = 300 pixels = 495’’=8.25’.

North up, East left. Aperture radius in Astrometrica = 4 pixels = 6.60’’.

14x120s from 20:31UT to 21:11UT, recentered on comet with Astrometrica.

NET PPMXL

    CK12S010 KC2013 03 09.85887 06 45 10.31 +31 19 14.0          15.8 N      511

    CK12S010 KC2013 03 09.86764 06 45 10.04 +31 19 12.6          15.8 N      511

    CK12S010 KC2013 03 09.87925 06 45 09.65 +31 19 11.6          15.8 N      511

2013-09-14

TEL 0.205-m f/5.5 reflector + CCD SBIG ST8XME + CLR + r’, CCD@-15°C.

f=1125mm, field 42.1‘x28.1’, 1.65’’/pixel.

North up, East left. Aperture radius in Astrometrica = 4 pixels = 6.60’’.

CLR 6x60s from 03:40UT to 03:46UT + r’ 16x60s from 03:46UT to 04:04UT, recentered on comet with Astrometrica.

NET UCAC-4

    CK12S010 KC2013 09 14.15343 09 02 48.71 +20 28 34.5          14.9 N      511

    CK12S010 KC2013 09 14.15499 09 02 48.91 +20 28 34.1          14.8 N      511

    CK12S010 KC2013 09 14.15655 09 02 49.03 +20 28 33.6          14.9 N      511

    CK12S010 KC2013 09 14.15984 09 02 49.40 +20 28 31.7          14.9 N      511

    CK12S010 KC2013 09 14.16413 09 02 49.83 +20 28 29.4          14.8 N      511

    CK12S010 KC2013 09 14.16803 09 02 50.23 +20 28 27.5          14.9 N      511

Measured tail 2’50’’ in PA=299° (in composite CLR+r’ image). Log scale (DDP IRIS).

2013-09-16

TEL 0.205-m f/5.5 reflector + CCD SBIG ST8XME + CLR + r’, CCD@-15°C.

f=1125mm, field 42.1‘x28.1’, 1.65’’/pixel.

North up, East left. Aperture radius in Astrometrica = 4 pixels = 6.60’’.

CLR 15x60s from 03:34UT to 03:51UT + r’ 16x60s from 03:52UT to 04:10UT, recentered on comet with Astrometrica.

NET UCAC-4

    CK12S010 KC2013 09 16.15030 09 06 14.08 +20 11 23.2          14.7 N      511

    CK12S010 KC2013 09 16.15264 09 06 14.31 +20 11 22.0          14.8 N      511

    CK12S010 KC2013 09 16.15498 09 06 14.60 +20 11 20.5          14.8 N      511

    CK12S010 KC2013 09 16.15732 09 06 14.83 +20 11 19.2          14.8 N      511

    CK12S010 KC2013 09 16.15965 09 06 15.06 +20 11 18.5          14.8 N      511

    CK12S010 KC2013 09 16.16274 09 06 15.42 +20 11 16.1          14.8 N      511

    CK12S010 KC2013 09 16.16586 09 06 15.59 +20 11 15.7          14.8 N      511

    CK12S010 KC2013 09 16.16910 09 06 16.00 +20 11 13.1          14.8 N      511

    CK12S010 KC2013 09 16.17260 09 06 16.38 +20 11 11.4          14.7 N      511

Measured tail 4.0’ in PA=298° (in composite CLR+r’ image). Left: linear scale; right: Log scale (DDP IRIS).

2013-11-12

TEL 0.205-m f/5.5 reflector + CCD SBIG ST8XME + SDSS r’ Gen-1 Astrodon filter, CCD@-30°C.

f=1125mm, field 42.1‘x28.1’, 1.65’’/pixel.

North up, East left. Aperture radius in Astrometrica = 4 pixels = 6.60’’.

40x20s from 05:08UT to 05:26UT, recentered on comet with Astrometrica. 

NET UCAC-4

    CK12S010 KC2013 11 12.21582 12 26 38.85 -03 29 20.2          11.8 N      K25

    CK12S010 KC2013 11 12.21991 12 26 41.00 -03 29 37.0          11.9 N      K25

    CK12S010 KC2013 11 12.22420 12 26 43.21 -03 29 55.1          11.9 N      K25

3’’ seeing.  Log scale + DDP IRIS