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Astrophotography and Sketching >> Solar System Imaging & Processing

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Mike Phillips
Carpal Tunnel
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Reged: 02/21/06

Loc: Swift Creek, NC - 35.682 N, 78...
HiRes Ceres new
      #3010702 - 03/28/09 08:58 PM Attachment (71 downloads)

I was inspired by Fabio Plocostomos and Chris Go's work on Ceres at high res and decided to go for it myself near opposition or good seeing. So that single 2 day break in rain and clouds a week ago yielded some good Venus and Saturn images and also this great view of Ceres.

I had a hard time finding some good ephemeris data for angular size so calculated it myself as follows:

http://en.wikipedia.org/wiki/Angular_diameter

[Theta doesn't show in BBCODE, I substituted &]

& = d / D, where & is the angular size, d is visual diameter and D is the distance to the object.

So using the WRONG units I get:

1.64AU distance to Ceres and 950km diameter of Ceres gives 0.798".

I hope to not have overexposed the object which would have caused bloat or bloom in the data. I stretched in post processing and resized to 200%

Enjoy!

Mike


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chris go
Pooh-Bah
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Reged: 04/06/04

Loc: Cebu City, Philippines
Re: HiRes Ceres [Re: Mike Phillips]
      #3011216 - 03/29/09 07:41 AM

Nice work Mike. Imaging Ceres is really tough!

Regards,
Chris


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