Periodic Comet 46P/Wirtanen (27 Nov 18)
Taken by Jan Curtis on November 27, 2018 @ Vail, Arizona
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Details:
1st image:

his, my 3rd straight night photographing this comet met with broken cloud cover just after this image was taken until ~10;05PM (a few minutes before moon rise).


This is a near normal eye view (uncropped) showing Comet 46p between 7:19PM and 7:23PM MST looking southeast over my neighbors house. This was a 30x4s unguided exposure at iso 6400 with 35mm Nikkor f/1.4 @ f/2 from raw file. The stars are fixed but the roof wasnt. The comet seemed about the same brightness as yesterday (www.flickr.com/photos/79387036@N07/44253625290/in/photost...).


PixInsight and PS 6.0 was used. Temperature was 55F, RH 38%, with light winds (same as yesterdays readings).

2nd image:

Taken at 10:05PM when Comet 46p transits the meridian (35 degs above the horizon) with moon rise occurring a few minutes later. Compare to yesterday: www.flickr.com/photos/79387036@N07/45345542704/in/datepos....

Clouds dominated most of the early night hours but cleared just long enough for this capture.

With Comet 46p much higher in the sky, I was able to better record its structure. Note the suggested small tail at the 10 oclock position. Estimated magnitude 5.8.

Without an operating clock drive my exposure time was limited:

Nikon d7100, Nikkor 180mm ED @ f/2.8, iso 8960 (30x3s), iso 10600 (30x3s), PixInsight, PS 6.0. Cropped.

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