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APM MS 25x100 ED APO Magnesium Series Binoculars vs 28 x 110mm

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#1 aa6ww

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Posted 11 July 2019 - 06:15 PM

Does anyone have any experience with APM's MS 25x100 ED APO Magnesium Series Binoculars?

I find myself almost always using larger binoculars near the horizon, chasing the sun for comet observing or even observing the moons thin sliverof a crescent.

I use to have Oberwerks 25x100's straight through's and they were great. I thought about buying the larger APM 28x110mm bino's but I ran across their 25x100ED binoculars. Sometimes I notice during terrestrial observing right near sunset, I could see where ED binoculars would produce a cleaner view.

I'm just wonder if their ED's help clean up the color fringing I sometimes see.
Also, I'm wondering how their non ED 110's perform vs the 100's during day and night observing. Both pairs are large but by no means overwhelming.

Anyone have any first hand experience with either the 25mm x 100mm ED's or the 28x110's non ED's, not just on their optical quality or differences, but also how easy they are to focus, set up or just use on a large stable tripod.

Thanks in advance for any info on any of this.

Ralph in Sacramento

Edited by aa6ww, 11 July 2019 - 06:17 PM.


#2 Jawaid I. Abbasi

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Posted 11 July 2019 - 11:43 PM

Be very careful !!!!

 

Near sun is not good. Plus always educate you know otherwise it is a fun hobby....



#3 Pinac

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Posted 12 July 2019 - 01:31 AM

Does anyone have any experience with APM's MS 25x100 ED APO Magnesium Series Binoculars?

I find myself almost always using larger binoculars near the horizon, chasing the sun for comet observing or even observing the moons thin sliverof a crescent.

I use to have Oberwerks 25x100's straight through's and they were great. I thought about buying the larger APM 28x110mm bino's but I ran across their 25x100ED binoculars. Sometimes I notice during terrestrial observing right near sunset, I could see where ED binoculars would produce a cleaner view.

I'm just wonder if their ED's help clean up the color fringing I sometimes see.
Also, I'm wondering how their non ED 110's perform vs the 100's during day and night observing. Both pairs are large but by no means overwhelming.

Anyone have any first hand experience with either the 25mm x 100mm ED's or the 28x110's non ED's, not just on their optical quality or differences, but also how easy they are to focus, set up or just use on a large stable tripod.

Thanks in advance for any info on any of this.

Ralph in Sacramento

 

I happen to have both.

 

the 28x110 gives you really nice views of e.g. the moon, but you have to accept quite some CA, and it is definitely not as easy to mount, given its weight and front-heayv design.

The 25x100 ED are in my view the best (and most expensive) 25x100 around, see

 

https://www.cloudyni...view/?p=8473974

 

and are MUCH easier to set up and handle than the 28x110 beast.

The ED glass makes a big difference in terms of color fringes and give a much cleaner view.

 

Pinac



#4 aa6ww

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Posted 12 July 2019 - 01:15 PM

I really like what Im reading about the 100 deg ED straight through binoculars. Its either these or the 28 x 110mm bino's im interseted in. I see that Oberwerks sells their 28 x 110's. I read these can accept screw on 1.25" filters. 

Thats a huge plus for me. I'll call them and find out of this is true.

 

thanks for the info.

 

...Ralph



#5 Mark9473

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Posted 12 July 2019 - 01:38 PM

Filters on the outside of eyepieces isn't all that much fun. You get reflections and lose effective eye relief.
  • paulsky and Mr. Bill like this

#6 Rich V.

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Posted 12 July 2019 - 02:15 PM

What Mark said...   

 

Eye relief of the 28x110's eyepieces is quite short already; filters will make it worse.  Not an optimal place to put filters, anyhow.  The 20x110 has much better ER than the 28x, FWIW.

 

What do you plan to use for a mount? 25x100 is much more manageable. Both binos provide a ~4mm exit pupil but the difference in size/weight/mounting requirements would more than cancel out the small 12% increase in image scale, IMO.  ~60% more weight for the 110s.  

 

At 25x+ the difference in CA with the ED model will be quite noticeable on bright objects. 

 

Rich



#7 Prescott702

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Posted 14 July 2019 - 10:07 AM

Those 110 needs an update. ED glass and 36X eyepieces bow.gif




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