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HiRes Ceres

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#1 Mike Phillips

Mike Phillips

    Soyuz

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Posted 28 March 2009 - 07:58 PM

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....ngular_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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#2 chris go

chris go

    Apollo

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  • Joined: 06 Apr 2004

Posted 29 March 2009 - 06:41 AM

Nice work Mike. Imaging Ceres is really tough!

Regards,
Chris


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