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Magnifications for a binoviewer

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#1 Stubbe BR

Stubbe BR

    Lift Off

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Posted 19 May 2003 - 02:59 AM

Well, I haven't yet decided if I should go with the Siebert Black Night or the more expensive BW. While I consider this, I'll also need to decide which magnifications I should go for. Is there any difference of which magnifications you use when your observing monocular as opposed to binocular observing?

#2 Guest_**DONOTDELETE**_*

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Posted 19 May 2003 - 08:56 AM

Hi, I have heard (from others) that the planets, when viewed through a binoviewer, appear somewhat larger than viewing the same object in mono. Not to say the magnification is greater, just that the brain percieves it to appear larger.. I don't know this from personal experience yet, however. - Chris M

#3 Silvio


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Posted 19 May 2003 - 02:49 PM

I get a definite 'magnification bonus' thru the bino versus cyclops. I would hazard to say that it is in the 50% range for me. But as you rightly point out, this is purley a perception issue, not an actual increase in magnification.

When I first received my AP Bino, I could have sworn that AP sent me the 1.7x OCS rather than the 1.25x OCS - the images just looked so much larger. I ended up calling AP and Margie Christen swore that they sent me the 1.25x OCS. So I did some star drift testing, and guess what - Margie was right and I was wrong! The drift times supported 1.25x.

I find that the planets at 170x bino'd seem to have the same magnification as 250x cyclops. At least, that is my perception. So right now I am in the market for a pair of top quality eyepieces in the 13mm range that will give me 230x, which I think ought to be optimum for the planets.

Anyone care to comment ?

Best regards to all,

#4 Guest_**DONOTDELETE**_*

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Posted 19 May 2003 - 09:04 PM

Hi Stubbe,
The most frequent report on magnification and binoviewers seems to involve a lower power yielding increased resolution.An example of this would be seeing individual
stars in a globular cluster at a significantly lower power
as compared to monocular viewing.I have personally experienced this every time I use my binoviewer and observe globular clusters.It much easier to see detail in a binoviewer for most people.If you have a good selection of ep's all you need to do is double up on them if possible.
I am biased in favor of Sieberts Optics ep's.I replaced four pairs of eyepieces over a three year period. I started with
Nexstar plossls 40mm,32mm,25mm,Vixen Lanthanum 15mm,10mm.
these were fine for the first year and I used them with my Nexstar8.I didn't last a full year without contracting aperture fever.This lead to to purchase of a 15in F5 Discovery Truss Dob.As this telescope doesn't track objects
in the sky yet, wider angle eyepieces seemed like a good idea.The first ep I bought was a replacement for the 32mm Nexstar,as it did not have enough eyerelief.This was a 6 element 32mm 52degree Standard Series pair.I outright replaced 15mm and 10mm with the Ultra Series
15mm and 11mm.I added a 19mm from the same series.My most recent addition has been a 22.5mm Ultra Plus.The 22.5mm,19mm,15mm,11mm, all have a 70 degree AFOV.This selection of ep's while apearing like overkill, actually
helps me combat the effects of light pollution and variable
seeing conditions to get the most out of my scopes.Hope this information proves helpful. Scotty. :grin:

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