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20x80 or 6" f5 for the Pleiades?

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#1 stargazer193857

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Posted 25 June 2014 - 02:15 AM

Which do you think would give you the better view? I think a 25x100 would do better than the 20x80, but at a much higher price.

#2 Brian Carter

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Posted 25 June 2014 - 06:24 AM

For the Pleiades: good binoculars will show it best, nice wide fields. It's the smaller clusters that need a telescope.

#3 Jon Isaacs

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Posted 25 June 2014 - 06:48 AM

For the Pleiades: good binoculars will show it best, nice wide fields. It's the smaller clusters that need a telescope.


I own a pair Japanese 20x80s that are pretty decent. My favorite views of the Pleiades are in telescopes. For the entire cluster, a 4 inch refractor with quality widefield eyepieces are my favorites. An excellent pair of 80mm or 100mm binoculars with angled eyepieces might be better but most binoculars are too optically compromised. For the reflection nebulae, something much larger shows them best.

Jon

#4 Tony Flanders

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Posted 25 June 2014 - 06:51 AM

Which do you think would give you the better view? I think a 25x100 would do better than the 20x80, but at a much higher price.


Both 20x80 binoculars and a 6-inch f/5 scope will give fine views of the Pleiades -- as long as the scope has a 2-inch focuser. With 1.25-inch eyepieces, the field of view is too cramped to appreciate the Pleiades properly.

A slightly smaller scope might be best of all; the Pleiades are wonderful in my 4.5-inch f/4 StarBlast and in my 70-mm f/6.9 refractor. I agree that 25X is just about optimal, but 20X is fine, too.

#5 Illinois

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Posted 25 June 2014 - 07:08 AM

6" f5 for me because I can use low up to high power! Around 25 to 30 power is great view Pleiades!

#6 Midnight Dan

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Posted 25 June 2014 - 08:06 AM

My 2 cents: the 6" f/5.
-Dan

#7 csrlice12

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Posted 25 June 2014 - 08:33 AM

Uh, both....because you won't always be looking at one object in the sky.......

#8 BigC

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Posted 25 June 2014 - 10:50 AM

Which do you think would give you the better view? I think a 25x100 would do better than the 20x80, but at a much higher price.

15x70 binoculars are easier to hold ;a fast f4 or f5 scope lets you use higher power.Really hard to select a do-it-all set of optics.

#9 izar187

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Posted 25 June 2014 - 10:55 AM

Uh, both....because you won't always be looking at one object in the sky.......


There you go.

Both work best mounted, and this 6 is only about ten pounds, so not hard to mount.
But it will reach out to places places the 20x80's can not go.

#10 gene 4181

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Posted 25 June 2014 - 11:31 AM

its only my opinion, but the 6in f5 with a 2in focuser is a do-it all optic. some might say not as wide a field as a st 80 or short 102 , but gathering 6in of light and resolution has made it a keeper in my use.

#11 Love Cowboy

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Posted 25 June 2014 - 11:57 AM

I've looked at the Pleiades a good bit in my day, and my favorite view of them ever came in a pair of 15x70s

#12 gene 4181

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Posted 25 June 2014 - 12:31 PM

i guess my response is jaded by the fact of utility and ease of use . hand holding a more than 10 power bino isn't my cup of tea.

#13 Tony Flanders

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Posted 25 June 2014 - 01:34 PM

It's only my opinion, but the 6in f5 with a 2in focuser is a do-it all optic.


"Do it all" is a bit of an exaggeration; for instance, it's not a good choice for viewing the Coma Star Cluster, nor for resolving stars in the fainter half of the Messier globular clusters. But it is mighty versatile.

If I had to keep just one of my current scopes, it would almost certainly be my 7-inch f/5.4 Dob.

#14 gene 4181

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Posted 25 June 2014 - 03:40 PM

well then, within reason its a mostly do it all scope. thank you tony

#15 Jon Isaacs

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Posted 25 June 2014 - 11:15 PM

well then, within reason its a mostly do it all scope. thank you tony


My "do it all scope" is a 4 inch refractor and a Dobsonian with some reasonable (or not so reasonable) aperture. :ubetcha:

Jon






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