Comet c/2022 E3 (26 Jan 23)
Taken by Jan Curtis on January 26, 2023 @
Oracle, Arizona
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Camera Used: Unavailable Unavailable
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Details:
Comet ZTF was observed under perfect skies and is now moving ~11 arcmin/hour (the moon's diameter in just 2.75 hours). Comet ZTF continues to lose its anti-tail although it is still impressive in long duration images. The cropped image at left was taken with a Nikon d7100, Nikkor 180mm f/2.8 @ f/2.8, exp 8x90s, iso 3200, fixed comet and stars; the right image in the panel is an invert of the center without stars (111x90s or ~2.8 hours integrated time). All images post-processed with PixInsight.
Despite perfect skies, the naked eye visibility was slightly fainter than 24 hours earlier perhaps due to the shrinking anti-tail and fainter ion tail. I'd estimate the magnitude of the comet at +5.4. However, I was able to image the comet 15 secs less per sub than yesterday and get similar results. The left image was only 8 subs before comet drift became noticeable (12 mins integrated time).
Bortle 4, sky transparency 10/10, temperature 32F, RH 50%, breezy. Orion Sirius EQ Mount used.
Photographer's website:
https://www.flickr.com/photos/cloud_spirit/albums/72177720304740214
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