televue 5x powermate

i am considering getting one of the 5x powermates to go with my ed80
refractor. they say that these are primarily used with short focal length
refractors. the ed80 is 7.5 fl. i was hoping to use it to do prime focus
photography. now i am wondering if this is a wise investment.
regards,
john

I have a Pronto, 480mm focus length, the 5x Powermate is a must for planets,
unless I want to look through tiny, pip holed 4 mm eypieces.

Julius

"shawn o'deal" wrote in message
...
i am considering getting one of the 5x powermates to go with my ed80
refractor. they say that these are primarily used with short focal length
refractors. the ed80 is 7.5 fl. i was hoping to use it to do prime focus
photography. now i am wondering if this is a wise investment.
regards,
john

I have a Pronto, 480mm focus length, the 5x Powermate is a must for planets,
unless I want to look through tiny, pip holed 4 mm eypieces.

Julius

"shawn o'deal" wrote in message
...
i am considering getting one of the 5x powermates to go with my ed80
refractor. they say that these are primarily used with short focal length
refractors. the ed80 is 7.5 fl. i was hoping to use it to do prime focus
photography. now i am wondering if this is a wise investment.
regards,
john

I have a Pronto, 480mm focus length, the 5x Powermate is a must for planets,
unless I want to look through tiny, pip holed 4 mm eypieces.

Julius

A barlow is necessary with a Pronto to get reasonable magnifications but a 2x
like an Ultima does a fine job.

jon

I have a Pronto, 480mm focus length, the 5x Powermate is a must for planets,
unless I want to look through tiny, pip holed 4 mm eypieces.

Julius

A barlow is necessary with a Pronto to get reasonable magnifications but a 2x
like an Ultima does a fine job.

jon