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What’s your favorite size binoculars for open clusters

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36 replies to this topic

#1 dd61999

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Posted 06 April 2019 - 01:25 AM

Open clusters are probably my favorite binocular views

 

but not sure if I like the wide views of lower power binoculars better to see the whole area or higher magnification to bring out more of the diamond like sparkle 

 

so whats your go to binoculars size for open cluster?


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#2 Ian Robinson

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Posted 06 April 2019 - 01:29 AM

20x80
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#3 Napp

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Posted 06 April 2019 - 01:46 AM

15x70


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#4 Astro-Master

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Posted 06 April 2019 - 01:59 AM

I have a pair of Oberwerk 20x80 light weight bino's that attach to a rotating chair called the Couch Potato Chair. It is the most comfortable way to view with a pair of binoculars, complete with a head rest.  I also have a pair of 15x70 that are great for wider fields for the Milky Way, but the 20x80 with a 3.5* field are the best for Open Clusters.


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#5 paulsky

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Posted 06 April 2019 - 05:25 AM

The mighty 16*70 !!


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#6 edwincjones

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Posted 06 April 2019 - 08:40 AM

8x56 for large OCs, 100mm for small OCs

but "mighty 70mms" a good compromise

 

edj


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#7 Jon Isaacs

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Posted 06 April 2019 - 09:26 AM

8x56 for large OCs, 100mm for small OCs

but "mighty 70mms" a good compromise

 

edj

 

Open clusters are just so different, they're definitely not a one size fits all object.  Large, bright open clusters can be nicely framed in 10x50s with a 6.5 degree AFoV.  Others are best in larger binos, I like my Resolux 15x70s with plenty of eye relief and a 4.4 degree AFoV.  

 

Many clusters are best seen in a telescope.  M7 is a far different animal in 12.5 inch or 16 inch than it is in 10x50s or a 20x100s.  

 

My thinking is one wants a wide range of capabilities.

 

Jon


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#8 edwincjones

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Posted 06 April 2019 - 11:08 AM

Open clusters are just so different, they're definitely not a one size fits all object.  Large, bright open clusters can be nicely framed in 10x50s with a 6.5 degree AFoV.  Others are best in larger binos, I like my Resolux 15x70s with plenty of eye relief and a 4.4 degree AFoV.  

 

Many clusters are best seen in a telescope.  M7 is a far different animal in 12.5 inch or 16 inch than it is in 10x50s or a 20x100s.  

 

My thinking is one wants a wide range of capabilities.

 

Jon

 

In one of the old reviews in S&T the author commented that each time he got a new scope

he redid the Ms because they looked different in each scope.

 

edj


Edited by edwincjones, 06 April 2019 - 11:09 AM.

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#9 duck2k

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Posted 06 April 2019 - 12:01 PM

As far as hand held (or monopod), the 15x70’s are a great bino.  I also use my APM 100 with 24 UFF’s, which are great for OC’s because of the flat field, no curvature, or distortion.  That is what I use anyway.:)


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#10 REC

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Posted 06 April 2019 - 01:43 PM

My mounted Meade 8x63.


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#11 CAAD9

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Posted 06 April 2019 - 06:19 PM

Image stabilised 18x50. Notwithstanding that a few larger clusters need a wider fov, I find for most OCs these are my go to instrument.  

 

I find image stabilisation of prime importance because most OCs resolve their brightest constituents so a steady view is vital.


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#12 Rich_W

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Posted 06 April 2019 - 07:47 PM

My Canon 15x50 IS would be my “go-to” for OCs.  Though I will usually complement them with my 8x42s as I really enjoy the contrast in going from wide field to higher power view. 


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#13 MSWcdavis

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Posted 06 April 2019 - 08:56 PM

anything I can hold steady

either in a zero gravity chair or standing up


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#14 Astroman007

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Posted 06 April 2019 - 09:17 PM

Open clusters are just so different, they're definitely not a one size fits all object.  Large, bright open clusters can be nicely framed in 10x50s with a 6.5 degree AFoV.  Others are best in larger binos, I like my Resolux 15x70s with plenty of eye relief and a 4.4 degree AFoV.  

 

Many clusters are best seen in a telescope.  M7 is a far different animal in 12.5 inch or 16 inch than it is in 10x50s or a 20x100s.  

 

My thinking is one wants a wide range of capabilities.

 

Jon

I completely agree.



#15 Carlos Flores

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Posted 08 April 2019 - 09:19 AM

While I feel more comfortable using 10x50 for clusters, i must admit that the 15x70 is my best compromise for open clusters just before jumping to rich field views with the telescope at 20x

 

Carlos


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#16 jaraxx

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Posted 08 April 2019 - 02:25 PM

Whatever binoculars I have in hand at the time is the best binocular to use for open clusters. There's a lot of variation in clusters, and lots of variation in binoculars. Makes for a good world - who wants to look out the same window all the time?



#17 vdog

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Posted 08 April 2019 - 07:19 PM

20x80

Even the clusters that don't fit in the FOV (e.g., Alpha Persei) still look amazing.
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#18 dd61999

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Posted 08 April 2019 - 10:55 PM

20x80

Even the clusters that don't fit in the FOV (e.g., Alpha Persei) still look amazing.

Alpha persei look like diamonds in 20x...but a wide field view in a 7x35 is amazing too


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#19 vdog

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Posted 09 April 2019 - 08:16 AM

Alpha persei look like diamonds in 20x...but a wide field view in a 7x35 is amazing too

Oh yeah, I still use the 10x50s for it as well, but it really sparkles at 20x.


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#20 Crusty99

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Posted 09 April 2019 - 11:09 PM

Most interesting thread. For me, I tend to use the 16x70 for viewing open clusters when I use a tripod. For handheld, I drop down and use the 10x70 or 7x50. 


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#21 clivemilne

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Posted 15 April 2019 - 04:22 AM

20 inch binoculars.


Edited by clivemilne, 15 April 2019 - 04:23 AM.


#22 jcj380

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Posted 15 April 2019 - 12:05 PM

15x70 largely b/c that's the biggest pair I have.



#23 SMark

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Posted 15 April 2019 - 12:30 PM

Alpha persei look like diamonds in 20x...but a wide field view in a 7x35 is amazing too

The binoculars that really got me interested in star field observation were my wide angle 7x35's. 


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#24 Skittersqueek

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Posted 15 April 2019 - 03:26 PM

I have 3 different sets of binoculars 140mm,100mm, 10x70 ultras. Love the 140mm but something about looking through the 10x70...especially when viewing sagitarius area clusters and nebula.. obviously the double cluster in persius as well.

#25 Allardk

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Posted 16 April 2019 - 01:51 AM

I agree with Jon Isaacs. There’s no single instrument. The difference in apparent size is to big.

 

NGC 4755 (the Jewel Box) is great in the KOWA Highlander Prominar at 32x with it supersharp center and great presentation of the different colors in this tiny cluster.

The Hyades cluster (Melotte 25) looks great in my Fujinon 7x50. 

 

As I like observing open clusters the answer to your question is: see my signature

I try to “zoom out” to a certain extend to have an overview and compare different stars within the cluster to see where they fit in the H-R diagram. 

 

To be a able to observe a wide range of cluster without burning your wallet follow Astro-Master’s advice bow.gif




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