[ATMoB-discuss] Re: [ATMoB-club] RE: Comet Swan Animations

[George Roberts]

Do you have any glass in your optical path?  Infra-red light focuses differently through glass than visible light thus the typical 
out-of-focus ring around the star perhaps?  But mirror lenses don't have this issue.

- George Roberts
http://gr5.org
----- Original Message ----- 
From: "Steve Beckwith" <stevebeckwith at comcast.net>
To: "'astronight.com'" <jbuonomo at astronight.com>; <atmob-club at atmob.org>
Sent: Wednesday, November 08, 2006 10:38 PM
Subject: RE: [ATMoB-club] RE: Comet Swan Animations


> John,
> Your videos, as always, are "fun stuff".
>
> I've crossed the object you mention to GSC 2094-2856,  a 10.7 mag star.
> I expect this number crosses to your tycho database reference
> TYC2090-681-1.
>
> It's spectral type (of which I can't find any info) may be in a
> wavelength (Ir) in which your detector has a higher sensitivity.  This
> may be causing to be a bit brighter and some what bloated.  In fact,
> you'll note that the star right next to it appears significantly fainter
> but in fact is only 0.2 mags fainter (10.9) than 2094-2856.  The
> magnitudes I've cited our "visual" and I pulled them from "The Sky".
>
> On the outside event, this is a new planetary nebula.  I would greatly
> appreciate if you name it "Steve".
>
> Best regards,
> - "Steve"
>
>
>
> -----Original Message-----
> From: atmob-club-bounces at atmob.org [mailto:atmob-club-bounces at atmob.org]
> On Behalf Of astronight.com
> Sent: Wednesday, November 08, 2006 8:35 PM
> To: atmob-club at atmob.org
> Subject: [ATMoB-club] RE: Comet Swan Animations
>
>
> Hi Everyone!
> Over the past week I have been recording frames of  Comet Swan so I can
> produce a short video of it's trek through the solar system...
> on the 6th of November I recorded a sequence of frames and I see
> something
> that does not show up in either The Sky or Starry Night Pro V5, I also
> looked over the dss and I cant seem to find this unknown
>
> By the looks of it, it is a planetary nebula but I don't know what
> it's designation is and I would like to document this in my video.
>
> NGC6513 a small galaxy is the only DSO that list anywhere near the comet
> while this sequence was recorded
> The Star TYC2090-681-1 (Mag10) is the only item that I can find that
> matches
> this orientation on my video
>
> I have the sequence in 4 sizes (ani gifs) and I also have a screen shot
> of the raw data and a processed to ID this target.
> These images where acquired from 71.17w 42.36n between 5:19pm est -
> 7:30pm est. on the 6th of Nov 06
> If anyone knows the name please email me or fill the form on the page
> with the pictures
> <http://www.astronight.com/swan.htm#11-06-2006>
> http://www.astronight.com/swan.htm#11-06-2006
> CS and thanks
> John
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