Comet c/2022 E3 ZTF (31 Jan 23)
Taken by Jan Curtis on January 31, 2023 @
Oracle, Arizona
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Details:
Comet ZTF was observed under scattered low cloudy skies after moonset but made worst due to Phoenix's sky light dome and the fact that it is now moving ~16.2 arcmin/hour (the moon's diameter in 1.85 hours).!!!!! Comet ZTF ion tail is significantly brighter than yesterday while the broadening dust tail is oriented 90 degrees from it. The uncropped image at left was taken with a Nikon d7100, Nikkor 180mm f/2.8 @ f/2.8, exp 3x90s (integrated time of 4.5 minutes), iso 2200, fixed stars; the right image in the panel is an invert of the center without stars (58x90s or ~1.5 hours integrated time). All images post-processed with PixInsight. Field of view ~7.4x4.9 degrees.
The naked eye visibility was hampered by a thick moisture atmosphere and sky brightness as mentioned above. I'd estimate the magnitude of the comet at +5.2 although I suspect it was a bit brighter as viewed under perfect skies. The left image was only 3 subs before comet drift became noticeable.
Bortle 4, sky transparency 7/10, temperature 36F, RH 85%, slight breeze. Orion Sirius EQ Mount used.
Remarks: This was my 12th out of 13th morning recording the comet. I missed 23 Jan due to clouds. This streak has to end in two days because of the full moon.
Photographer's website:
https://www.flickr.com/photos/cloud_spirit/albums/72177720304740214
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