stevewanstall Posted April 16, 2020 Share Posted April 16, 2020 Currently there are three comets visible in the Northern Hemisphere. One, C/2019 Y4 Atlas, was hoped to become a real stunner but seems to have fragmented in the last week and has dimmed somewhat, currently at magnitude 9.4. The other two, C/2019 Y1 Atlas (9.6)and C/2017 T2 Pannstarrs (8.7) are not expected to become naked eye objects. After previously taking some images of Y4 Atlas and finding out about turning off dither, I decided to have another go. I have taken 240 s exposures, calibrated with flats and dark flats and created gifs from the unstacked stretched frames. (DSS, Lightroom and a gif maker). The 2019 Y1 and 2017 T2 seem much brighter than 2019 Y4; the magnitudes were from the information pane in Cartes du Ciel, after I had updated the comet information last night. I imagine it shows the ongoing fragmentation of Y4. This is C/2017 T2 Panstarrs: This is C/2019 Y1 Atlas (the 'old'Atlas): This is C/2019 Y4 Atlas, the one that is fragmenting and becoming dimmer: 11 Link to comment Share on other sites More sharing options...
Johan L Posted April 17, 2020 Share Posted April 17, 2020 Great images. What equipment are you using? Link to comment Share on other sites More sharing options...
stevewanstall Posted April 21, 2020 Author Share Posted April 21, 2020 On 17/04/2020 at 13:36, Johan L said: Great images. What equipment are you using? Equipment: Celestron 9.25 XLT at F10, Skywatcher EQ6 Pro GEM, ZWO 1600MM Pro, ZWO EFW with ZWO LRGB filters, QHY5IIC guide camera on Skywatcher 9 x 50 finderscope 1 Link to comment Share on other sites More sharing options...
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