Quote:
Originally Posted by ghsmith45
Nice image Leon. On another matter, look closely at the bright star on the right of the pic. Notice the two dark notches? This is the "dark lane/spikey star" problem that a lot of refractors seem to exhibit and no one knows why. My WO apo shows them--just look at some of my postings. They even appear on pics by some Astrophysics refractors (The finest and most expensive refractors on the planet). There was a big discussion about these on the WO Yahoo site a while back. Suggestions were pinched optics or somehow being caused by light reflecting from the lens spacers, but no definite conclusions were reached. Maybe you could ask your Tak supplier if he can explain the phenomenon. I'd be interested if there was a way to get rid of them.
Geoff
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I believe that there's nothing wrong with the optics on these high end refractors.
On the contrary this actually indicates their high optical quality.
The star in question is HIP 3834, a multiple star and multiple stars cause this effect as the refractor splits the two light paths.