Tried this evening and with the 10mm & 25mm eyepieces, it just wont focus enough. Almost but still a blurred disc. Jupiter and moons were almost ok, but Saturn was too blurry to distinguish.
#Am I able to use a 5x Barlow with the Heritage_130P scope?
cloud compass
yea thats wayy too much
your over magnified
using a 5x barlow and a 10mm is asking too much for a small portable telescope
tepid bough
If I have my maths right, max power is about 2 x aperture for the scope, so =260x
Magnification power = focal length of scope / fl of eyepiece
So with a 5x Barlow and 25mm eyepiece, 5x625/25 = 125x but with a 10mm eyepiece = 312x
So you could probably get away with it with the 25mm but not the 10mm. In theory.
Honestly 5x barlows suck though. Go 2x and use a good quality 5mm or 6mm eyepiece.
My mistake, the focal length should be 650mm not 625mm, but you get the idea.
barren frost
Honestly 5x barlows suck though. Go 2x and use a good quality 5mm or 6mm eyepiec...
Yeah tried with both, and i think with the 25, if the focusser could go another half turn it would catch it, but yeah I'll go with the 2x. I've not had a scope for long, just a couple of days, but I was absolutely blown away with the views of Jupiter and Saturn. Moon was stunning too, and saw satellites transiting across it. Thanks for the advice. What would be a " good quality eyepiece"
tepid bough
Yeah tried with both, and i think with the 25, if the focusser could go another ...
For budget, there are a bunch of “red band” or “gold band” 1.25”eyepieces, that are rebadged and sold by SvBony and others. IIRC the good ones come in 6mm, 9mm, 15mm and 20mm sizes.
barren frost
Thanks. I read that its importnt to match the focal length with your F value, is this critical?