RE: [APML] Comet Machholz's Increasing Movement Across the Sky

["Chris Schur" <cschur@therim.com>]

Ill have to wait for it to rise first...

-----Original Message-----
From: astro-photo-bounces@seds.org
[mailto:astro-photo-bounces@seds.org]On Behalf Of Chris Cook
Sent: Sunday, February 27, 2005 10:03 AM
To: Discussion of Film Astrophotography
Subject: Re: [APML] Comet Machholz's Increasing Movement Across the Sky


Hi Wade -

I wonder if anyone has tried to image the comet in the last few nights?  Its
dec is +82deg.  This should be fun with a GE.....

Chris

-----------------------------
Chris Cook Photography
www.cookphoto.com


----- Original Message -----
From: "Thomas W. Earle" <twade@bmi.net>
To: "'Discussion of Film Astrophotography'" <astro-photo@seds.org>
Sent: Sunday, February 27, 2005 2:06 AM
Subject: [APML] Comet Machholz's Increasing Movement Across the Sky


> The comet is beginning its rapid eastward movement across the sky.
>
> Here is a comparison on just how fast it is moving:
>
> January 5, 2005 (closest approach to Earth):
> RA  rate:  1.4"/minute
> Dec rate:  5.4"/minute
>
> March 7, 2005 (New Moon):
> RA  rate:  14.0"/minute
> Dec rate:  0.4"/minute
>
> Tonight (2/26) it is moving at 5.4"/minute in RA and this will
> continue to increase until it reaches its peak of 14.9"/minute on
> 3/9.
>
> As a result of this increasing movement, all film imagers will
> likely have to guide on the comet, except perhaps those with Schmidt
> cameras.  As an example, with my FSQ-106N which has a tolerance of
> 9.7", I can't even expose for a minute before the comet starts to
> smear across the film.
>
> Wade
>
>
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>


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