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Old 07-10-2010, 10:52 AM
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hotspur (Chris)
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Flip mirror mystery 'image'

Hi Folks

Just a quick question,Last night my son wanted to have a look a Venus through our telescope (vixen 103 refractor),We used a TV 13 mm T6 naglar.

He wanted some basic images,as they are doing astronomy studies at school.

He took some images with PS holding up to eye piece.see pics 2 and 3.

I did some fiddling around with eye pieces and flip mirror trying to may be get a better pic.

The flip mirror I have came with scope,it has two 'ports' for eyepieces,one straight through and flip the mirror foe a 45 degree angle for more comfort.

I flipped mirror so it was straight through,so a eye piece would have worked as it did,while I had my head in eye piece box,My son held PS up to the 45 degree port and took the First image presented here,However the mirror was flipped so to go straight through.there was no eye piece in this port when he did so.

I cannot understand how he got this image??Is it just a reflection??

I am not saying it its Venus,but it does certainly appear like what we saw Venus to look like.I think it must be some reflection.

But would like to ask IIS members what they think.

Thank you-Chris
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Old 07-10-2010, 02:12 PM
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mithrandir (Andrew)
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That sounds a bit odd Chris. With the mirror flipped all they way in either direction the other path is blocked. If it is part way over, the straight though side will get some light. The 90 deg side might get something but it would not be centered in the eyepiece holder.

If your image was centered in the eyepiece, you might have just been lucky the other image still fell on the camera.

The better place for photography is the straight though side of the flip. That removes the mirror as a source of distortions.
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Old 07-10-2010, 05:02 PM
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Merlin66 (Ken)
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With the Vixen flip mirror, when the mirror is flipped up for straight through viewing the other port sees only the flat mirror square to the entry ie you see a reflection of your eye if you look in....I can only assume what is imaged was a reflection from the camera lens at the time.
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