I had one of these and I think I got the best of the 4-5 Andrews had but sadly as Laurie says the CA was NOT! APO standard , but saying that it was very well corrected in the blue end of the spectrum so would have been easy to filter the red out .
Probably ok for AP using filters as said but pretty bad visually , the red overpowered most bright objects .
( probably a good nebular shooter ? )
That's where these lenses were best , in the blue/green , not red .
Its a shame because the build quality was up there with the best , a nice scope to use and that's a real shame .
On a side note I sold mine as well and grabbed a Takahashi sky90 ( same specs 90mm f 5,5 , but a fluorite ) and now this is a scope , but at 4x the price of the LP it should be .
ps. their 60mm triplets and quads look interesting ? don't write them off to easily .
Brian.
Quote:
Originally Posted by Larryp
I had a LP 90mm. Visually it was terrible-an enormous amount of chromatic aberration at both red and violet ends of the spectrum-took it back to the dealer and the replacement was just the same.
They would be a complete waste of time for imaging.
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