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pedro
super member
Reged: 09/28/04
Posts: 199
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Re: Moon in the Takahashi Astronomer 22x60's
06/24/08 09:59 AM
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Hi
I just compared (some time ago) the Fuji 16x70 X the Takahashi 22x60mm mainly using the full Moon as my target – these were my impressions:
A) TRUE COLORS - While in the Fuji I could notice some very BUT (I need to confess) VERY slightly (just suggestive) ‘’salmon like’’ color on the entire Moon (I believe as a result of their deep green coating) she was REALLY very pure white in color in the Tak's...maybe I wouldn’t even notice that ‘’salmon like color’’ issue if I have just the Fuji there at those time…
B) FALSE COLOR/CA- The Fuji show a very evident CA / color fringe (for me) while in the Tak just only some slightly ''false color'' issue when with the eyes not properly centered with the optical axis - that ‘’false blue line’’ however comes from the eyepiece border and not from their objectives...so this is not a tragedy… with the eyes properly centered the Moon rim is really pure white and sharp.
C) SHARPNESS - I felt despite the high magnification of the Tak they are a step over the Fuji anyway regarding some fine sharpness - this was not a surprise for me since the Tak are (I believe) better corrected overall than the Fuji.- their objective carry 4 elements.
D) TRANSPARENCY - The transparency in the Tak is at the same league of the Fuji's if not better...The Tak coatings seems to be better than the Fuji IMO.
E) APERTURE - When looking at some dark part of the sky (to some faint stars) I didn’t feel the ‘’small Tak aperture’’ facing the 70mm...this was not just because the hig Tak power could suggest some better view on the same faint stars …I am talking about real brightness – I don’t know how but seems really like the Tak are not just a 60mm...maybe due their very high transmission/transparency.
Well this is what I found...
regards Pedro
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