Periodic Comet 21P/Giacobini-Zinner
September 11, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Sep. 11 (2h05-2h09UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 40s in each filter. Total exposure time 160 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

August 22, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Aug. 22 (2h15-2h19UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 30s in each filter. Total exposure time 120 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

August 16, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Aug. 16 (0h18-0h23UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 30s in each filter. Total exposure time 120 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

August 23, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Aug. 23 (2h04-2h38UT) with 15-cm, f/6 Maksutov-Cassegrain astrograph and Canon EOS 6D DSLR. Exposure time was 12x180 seconds at ISO 3200. Total exposure time 36 minutes. Comet is passing just about 1/2o east of the Tombaugh 5 open star cluster. Image scale is 5.6 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

August 13, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Aug. 13 (1h40-1h44UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 30s in each filter. Total exposure time 120 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

August 9, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Aug. 9 (21h46-21h50UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 40s in each filter. Total exposure time 160 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Aug. 9 (22h53-23h15UT) with 15-cm, f/6 Maksutov-Cassegrain astrograph and Canon EOS 6D DSLR. Exposure time was 8x180 seconds at ISO 3200. Total exposure time 24 minutes. Image scale is 5.6 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

August 6, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Aug. 6 (22h27-22h31UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 40s in each filter. Total exposure time 160 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

July 25, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 July 25 (1h43-1h47UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 60s in each filter. Total exposure time 240 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by H. Mikuz, Èrni Vrh Observatory.

July 18, 2018

True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 July 18 (22h51-22h56UT) with 60-cm, f/3.3 Deltagraph telescope and LBVR filters. Exposure time was 60s in each filter. Total exposure time 240 seconds. Image scale is 2.5 arc sec/pixel. Copyright © 2018 by B. Mikuz & H. Mikuz, Èrni Vrh Observatory.

July 23, 1998

False-color image of periodic comet 21P/Giacobini-Zinner obtained on 1998 July 23.971UT with 36-cm, f/6.7 S-C telescope, V filter  and CCD. Exposure time was 3 minutes. Copyright © 1998 by  H. Mikuz.
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