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September 30, 2024
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Unfiltered image of periodic comet 21P/Giacobini-Zinner, obtained on 2024 Sep. 30.775 UT with
60-cm, f/3.3 Deltagraph telescope and CMOS camera. Exposure time was 4 minutes (4 x 60 seconds).
Copyright © 2024 by H. Mikuz, Crni Vrh Observatory.
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October 11, 2018
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True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Oct. 11 (3h12-3h16UT) 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, �rni Vrh Observatory.
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September 21, 2018
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True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Sep. 21 (2h44-3h14UT) with
15-cm, f/6 Maksutov-Cassegrain astrograph and Canon EOS 6D DSLR. Exposure time was 10x180 seconds at ISO 3200.
Total exposure time 30 minutes. Camera FOV is 2.3o x 1.53o. Image scale is 6.0 arc sec/pixel.
Copyright © 2018 by H. Mikuz, �rni Vrh Observatory.
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Crop of the above image with image scale 3.0 arc sec/pixel.
Copyright © 2018 by H. Mikuz, �rni Vrh Observatory.
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September 20, 2018
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True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Sep. 20 (3h05-3h09UT) 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 3.3 arc sec/pixel. Copyright © 2018 by H. Mikuz, �rni Vrh Observatory.
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True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Sep. 20 (3h15-3h40UT) with
15-cm, f/6 Maksutov-Cassegrain astrograph and Canon EOS 6D DSLR. Exposure time was 5x300 seconds at ISO 1600.
Total exposure time 25 minutes. Camera FOV is 2.3o x 1.53o. Image scale is 6.0 arc sec/pixel.
Copyright © 2018 by H. Mikuz, �rni Vrh Observatory.
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September 17, 2018
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True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Sep. 17 (2h45-2h49UT) 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 3.3 arc sec/pixel. Copyright © 2018 by H. Mikuz, �rni Vrh Observatory.
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September 12, 2018
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True color image of periodic comet 21P/Giacobini-Zinner, obtained on 2018 Sep. 12 (1h43-1h46UT) 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, �rni Vrh Observatory.
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September 11, 2018
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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, �rni Vrh Observatory.
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August 22, 2018
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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, �rni Vrh Observatory.
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August 16, 2018
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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, �rni Vrh Observatory.
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August 23, 2018
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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, �rni Vrh Observatory.
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August 13, 2018
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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, �rni Vrh Observatory.
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August 9, 2018
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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, �rni Vrh Observatory.
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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, �rni Vrh Observatory.
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August 6, 2018
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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, �rni Vrh Observatory.
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July 25, 2018
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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, �rni Vrh Observatory.
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July 18, 2018
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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, �rni Vrh Observatory.
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July 23, 1998
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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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