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Old 25-06-2010, 09:56 AM
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astroron (Ron)
Supernova Searcher

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Join Date: Mar 2005
Location: Cambroon Queensland Australia
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Quote:
Originally Posted by Stu Ward View Post
I was going to take a photo of what I saw, but never got round to it

The fact that i saw such a small disc surprised me, and also the cross hair affect (sorry don't know the real term) made me think i was doing something wrong or something wrong with the telescope.
I thought that maybe the cross hair was coming from the support veins of the secondary ?
If this is true, can they be reduced ?

Stu
Stu, I think you re talking about Diffraction Spikes
Because Venus is so bright and with the object being so low, and maybe your scope is not cooled down all add to this effect.
So really nothing wrong.
Just see if you can observe Venus when it is higher in the sky, and try as I said in my other post using a filter
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