Comet c/2022 E3 (24 Dec 22)
Taken by Jan Curtis on December 24, 2022 @
Oracle, Arizona
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Camera Used: Unavailable Unavailable
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Details:
This brightening comet is an easy target in the predawn skies with a telephoto lens of 200 mm or longer and exposures of 30 seconds or longer at an ISO of 1600 or greater (clock driven of course). Because I use a DX dSLR, the cropping factor brings the 180mm lens to ~270mm.
The inverted color image is shown to better detail the faint ion trail. The dust tail surrounding the comet's nucleus has noticeably grown and brightened during the past few days. It is still about 8th magnitude with the ion tail ~1.5 degrees long.
Tech specs: Nikon d7100, 77x60s, Nikkor 180mm @ f/5, iso 6400, cropped, Orion Sirius EQ Mount, PixInsight and Photoshop. Movement of comet is about 47 arcs / hour (~0.6 legs / day) on 24 Dec.
Probably best to keep integration time to less than 30 minutes for now in order to avoid comet motion against the fixed stars. In a month, as the comet approaches the earth, its motions will be obvious in just 5 minutes! The moon is approx 1800 arcs (0.5 degree) for comparison.
Photographer's website:
No URL provided.
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