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’’.

13x60s from 04:36UT to 04:53UT, recentered on comet with Astrometrica.

NET UCAC-4

    CK13V030 KC2013 11 12.19475 09 13 29.11 +08 27 55.4          15.2 N      K25

    CK13V030 KC2013 11 12.19847 09 13 29.73 +08 28 01.3          15.1 N      K25

    CK13V030 KC2013 11 12.20197 09 13 30.33 +08 28 05.8          15.2 N      K25

3’’ seeing.

Left image: log scale. Right: high contrast to see the faint tail 7’ long in PA 285°.

2013-11-28

TEL 0.205-m f/5.5 reflector + CCD SBIG ST10XME + SDSS r’ Gen-1 Astrodon filter, CCD@-30°C.

f=1125mm, field 45.4‘x30.6’, 1.25’’/pixel, white circle diameter = 300 pixels = 374’’.

North up, East left. Aperture radius in Astrometrica = 4 pixels = 5.0’’.

12x60s from 00:40UT to 00:54UT, recentered on comet with Astrometrica.

NET UCAC-4

    CK13V030 KC2013 11 28.02932 09 56 43.85 +15 24 12.8          16.7 N      K25

    CK13V030 KC2013 11 28.03270 09 56 44.39 +15 24 18.2          16.8 N      K25

    CK13V030 KC2013 11 28.03607 09 56 44.94 +15 24 24.4          16.7 N      K25