Yep bang on again Mental , I did not know Trev had one and yes those 'Barlowed ?' spherical mirrored newtonions are terrible sorry to say but if kept around the 100x mark they perform ok .
I personally hate them as much as the dreaded 'Dept store 50-60mm refractors' as these sell on great expectations but sadly mostly fall short on their promises , eg. 675x magnification ,,,, OUCH !!
that hurts more aspiring astronomers than cloudy nights ever will .
Sorry Trev to put your scope down but if kept at low to medium magnifications it will be fine until you grab the 10 inch in the future and I will disagree with Mental on this , grab the 15 and 20mm SV's just to see the difference they will show for a small out lay in your scope .
Brian.
Brian.
Quote:
Originally Posted by mental4astro
Hi Trev,
Your scope is the Celestron 127 Powerseeker (Trev mentioned it in another theread). This scope can only use 1.25" eyepieces. While the Superviews are an excellent range, you would be limited to only the 20mm and 15mm. Your scope being what it is, I would suggest you limit your Superview collection to the 15mm for now. But...
Thing is too, your scope being what it is, I'm not sure how the Superview would end up performing in it. Your scope has a barlow lens stuck in the end of the focuser tube. Your scope's primary mirror is spherical in shape rather than parabolic, and the supposed reason for sticking the barlow in the light path is to correct for spherical aberration. Sadly, this system doesn't work as well as intended, and spherical aberration is very much still present. Your scope will be limited in how high it can go magnification wise before the image starts degrading significantly. The Superview eyepieces being so more wider in field of view, the outer edge of the field could be significantly poor. That's why I'm not sure the Superviews are the best eyepiece selection here.
Honestly, you would be better served by sticking with the scope's existing eyepieces and learn to use them and the scope. When the time comes you can upgrade the scope to a better unit. The eyepieces you then can 'upgrade' appropriately too.
Yes, it would be nice to upgrade, but you are asking your "Morris Minor" scope to change its engine to a Ferrari engine - it ain't gonna work the way you would want it to. To change the eyepieces on it now, you'll get a slightly better image at low power, but you will still be unsatisfied for the money spent, and high magnification isn't going to be much better.
I'd rather be honest than see you do your money and end up disappointed and lose interest in astro.
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