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William Optics Zenithstar 61 APO


Rich B
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Hi all,

I'm in the market for a small portable scope to use with my Star Adventurer mount for widefield imaging.

Pretty much decided on the WO Z61 APO based on all the glowing reviews and the reasonable-ish price.

They're obviously not cheap once you've factored in the flattener and DSLR mount but astro stuff rarely is :)

 

I was wondering if anyone out there has got one / used one and has any opinions (good or otherwise) about the Z61 before I hand over the cash to FLO.

And the really important question: red, blue or gold? :unsure:

 

Rich.

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Kev (species 8472) is your man i think.

Give him a shout-out.....

 

I have a similar scope : Technosky 70

This has a flattener built in.

Edited by Bino-viewer
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10 minutes ago, Bino-viewer said:

I have a similar scope : Technosky 70

This has a flattener built in.

Got me thinking now...

The WO Star 71 II doesn't need a flattener and FLO bundle it with a Canon ring.

Also a bit more pricey though, as is the equally desirable GT 81

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Heres mine Rich.....

 

Its actually 4 elements in two pairs (i think)

It is designed to work with a full frame sensor.

I've not had it long, and plan on first light very soon, i just need to sort out a new dovetail.

 

Theres lots of variants of these little 60, 70 and 80mm scopes.

I'm guessing alot of them are made in the same place.

 

38692551722_765f9807d4_c.jpg

Edited by Bino-viewer
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8 minutes ago, Bino-viewer said:

Its actually 4 elements in two pairs (i think)

It is designed to work with a full frame sensor.

Apart from a slightly different paint job that would pass for a WO Star 71 II, almost like they're the same thing :)

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It looks identical. Although i paid alot less than the WO version.

 

Puzzled that the WO version is only suitable for APS-C sensors ??

I brought mine to work with FF ?

 

We shall see. I'm guessing there may be a bit of darkening around the edges

of my images when i hook my 6D onto it......

 

Link to my Technosky. Rupert at 'Astrograph' is great to deal with btw.....

 

http://astrograph.net/epages/www_astrograph_net.sf/en_GB/?ObjectPath=/Shops/www_astrograph_net/Products/AGTECAG70

Edited by Bino-viewer
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16 hours ago, Bino-viewer said:

It looks identical. Although i paid alot less than the WO version.

 

Puzzled that the WO version is only suitable for APS-C sensors ??

I brought mine to work with FF ?

With the 'extras' and 'tuning' taken into account the WO seems £150-£200 more.

On close inspection it looks like they are not clones despite visually appearing to be so.

The WO is 300g heavier and is a 71mm f/4.9 whereas the TS is a 70mm f/5 according to the specs.

I can't see why one would support FF and the other only APS-C though - could be the flattening drops off past 30mm rather than vignetting?

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After endless deliberation ended up going for a Skywatcher Esprit 80 ED PRO Triplet in the end.

I suspect the WO 71mm or similar astrograph would have been a better choice for pure imaging use but opted for a bit more of an all-rounder (I hope).

See what happens when you think about things too long... now in hiding from the wife :D

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