[AZ-Observing] Re: FW: Comet Update... C/2015 V2 and 45P
- From: Paul Lind <pulind@xxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Wed, 8 Feb 2017 17:51:20 -0500 (EST)
Tom,
Incredible comet sequence. I had no idea stars could move so fast! It's like
a view from the bridge of the Enterprize.
Paul Lind
----- Original Message -----
From: Tom Polakis <tpolakis@xxxxxxx>
To: az-observing@xxxxxxxxxxxxx
Sent: Wed, 08 Feb 2017 12:15:29 -0500 (EST)
Subject: [AZ-Observing] Re: FW: Comet Update... C/2015 V2 and 45P
David Douglass wrote:
45P was another story. In the 5 min frames, it is just a light streak
crossing the sky (and very fast).
Yes, it's less than a tenth of an a.u. away, and moving 9 degrees per day.
On Cloudynights, John Bortle pointed out that this is an old comet whose
nucleus is depleted of volatiles. As a result, it likely will not sport a
long tail.
I did a sequence of 30 frames this morning, each unfiltered 90-second
exposures tracked on the comet. My result was similar to yours. The star
field was very rich, as it passed through Steve Coe's "off-ramp" Milky Way
feature in Ophiuchus.
https://www.youtube.com/watch?v=jzpgTO1y4o0
Tom
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