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"new" 70mm 45s

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#26 Andresin150

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Posted 11 January 2013 - 04:16 PM

I think a good pair of binoculars could be an all purpose instrument if you are clear on what binoculars are for.
True wide fields (of more than 1 degree) and high magnifications (above 150x) are not possible, so why ask planetary detail to a binocular?... it would be like asking a big, long focal length telescope to frame the whole constellation of Orion...
I often observe the planets with my binoculars, but never searching for true planetary detail, just to get amazed by the views of the planet passing trough or nearby some DSO's, or aligned with other planets or the Moon, etc..
Also, even with the biggest binoculars, the idea is the simplest form of direct observation... at high powers I don't think I could enjoy observing without tracking

#27 Mr. Bill

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Posted 11 January 2013 - 04:31 PM

IMO, you can never get true quality high magnifications through any optic that uses prisms.

My experience with my Binobox using quality dielectric mirrors instead of prisms shows that quite clearly.

If I could own but one optic. the TV NP127 refractor would be a good choice.

#28 Jawaid I. Abbasi

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Posted 11 January 2013 - 05:18 PM

Build a Bino-Box like Bill and you will get 90% views like telescope (high magnification!!). I agreed with Joad and others and through my experience that every instrument has particular purpose.

I just recently acquired 25x100D and I do not expect to see features in Mars or see festoons in Jupiter but it shows best views of MilkyWay and some DSOs especially at a dark site.

#29 KeithC

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Posted 20 January 2013 - 10:26 PM

Kevin,

How does the image quality of your new BT 70 with 16x eyepieces compare with the 15x70 Ultra? Are they similar?

#30 OBERWERK

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Posted 21 January 2013 - 12:14 PM

Kevin,

How does the image quality of your new BT 70 with 16x eyepieces compare with the 15x70 Ultra? Are they similar?

So close, I have to call it a tie. Impressive for the BT-70-45 considering the extra prisms.

#31 KeithC

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Posted 21 January 2013 - 12:53 PM

Thanks Kevin!

#32 curiosidad

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Posted 22 January 2013 - 01:48 PM

This BT-70 can be used with a pair of 8-24mm zoom eyepieces?

#33 Fomalhaut

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Posted 23 January 2013 - 04:46 AM

Kevin,

How does the image quality of your new BT 70 with 16x eyepieces compare with the 15x70 Ultra? Are they similar?

So close, I have to call it a tie. Impressive for the BT-70-45 considering the extra prisms.


Would be interesting to hear that said by an independent user.

Chris






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