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AZStarGuy
super member
Reged: 05/05/08
Posts: 152
Loc: Scottsdale AZ
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I know the 2" 1.6x is highly regarded. Anyone with experience using the 1.25" 2x APOCHROMATIC barlow? (Model UB2SD)? NOT the 1.25 Achromat (UB2S).
How does it stack up against the TV Powermate? I'm in the market, but for what I'm planning, 2.5x might be a little too much... and I don't have a 2" focuser, so the 1.6" is out...
Thanks in advance -
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Ron
8" f6 Eq Newt
24PAN, 13T6,7T1,6RAD,5RAD,4 & 3.2 Planetaries
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AZStarGuy
super member
Reged: 05/05/08
Posts: 152
Loc: Scottsdale AZ
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On a side note: Does anyone know if it has a compression ring or is it just the thumb screw? I don't want marks on my barrels 
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Ron
8" f6 Eq Newt
24PAN, 13T6,7T1,6RAD,5RAD,4 & 3.2 Planetaries
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Lawrence Sayre
Post Laureate
Reged: 10/16/04
Posts: 3677
Loc: N.E. Ohio
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It is essentially the same Barlow as the Celestron Ultima and the Orion Shorty Plus. It would not be as good as a Powermate by any measure. I currently own the Orion Shorty Plus and the 2.5X Powermate, and I formerly owned an Ultima Barlow (which I sold not long after acquiring the Powermate). The Powermate easily outclasses these 3 element models for contrast and for sharpness across the FOV. It isn't even close.
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My philosophy, in essence, is the concept of man as a moral being, with his own happiness as the moral purpose of his life, with productive achievement as his noblest activity, and reason as his only absolute.
Ayn Rand (in the appendix to 'Atlas Shrugged')
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AZStarGuy
super member
Reged: 05/05/08
Posts: 152
Loc: Scottsdale AZ
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Powermate it is then! Thanks Lawrence. Your input is always valued in here! I've gone through 2 "budget" barlows over the years that never cut it to my eye. I didn't want a repeat.
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Ron
8" f6 Eq Newt
24PAN, 13T6,7T1,6RAD,5RAD,4 & 3.2 Planetaries
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Lawrence Sayre
Post Laureate
Reged: 10/16/04
Posts: 3677
Loc: N.E. Ohio
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I'm certain that you will like it!
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My philosophy, in essence, is the concept of man as a moral being, with his own happiness as the moral purpose of his life, with productive achievement as his noblest activity, and reason as his only absolute.
Ayn Rand (in the appendix to 'Atlas Shrugged')
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