New William Optics 180mm refractor

[GavStar]

In development now according to WO. F5.6 and 0.98 Strehl (56mm image circle) no other details that I can see!!

 

Edited November 16, 2021 by GavStar

[johninderby]

Most probably the same scope as this with a few WO touches.

https://www.apm-telescopes.net/en/apm-photo-visual-sd-triplet-apo-180-mm-f7-f56

Edited November 16, 2021 by johninderby

[Skyline]

That scope is nearly the size of that man. 😬

[vlaiv]

12 minutes ago, Skyline said:

That scope is nearly the size of that man. 😬

About as large as 8" F/6 newtonian. Probably as twice as heavy and about 20-30 times more expensive?

 

[johninderby]

Quote a heavy lump judging by rhe specs for the APM scope.

[RobertI]

No it's a Zenithstar 71 - just held by a very small man.

[nfotis]

Quite a monster. If I win the Lotto, I will keep it in mind...

N.F.

 

[GalaxyGael]

On 16/11/2021 at 17:37, RobertI said:

No it's a Zenithstar 71 - just held by a very small man.

Ha, ya I was reminded of the Father Ted episode when I saw the picture. This is small, that one is far away....:)

[GalaxyGael]

I can picture this being lifted onto a mount by a bobcat with a crane attachment. The dinky handle is cute, although probably not so useful at nearly 60lbs weight. Is that a vixen dovetail, or does the D-plate appear as small as one....

I wonder what the focuser visual back looks like. If it is as big as I think, it might look like a flight of stairs, M110 to M90 to M68 to M54 to M48 to M42 😜. I've seen 4 inch focusers on small scope opt for this russian doll assembly for the visual back.

[johninderby]

Nah want something a wee big bigger.

https://astrograph.net/epages/www_astrograph_net.sf/en_GB/?ObjectPath=/Shops/www_astrograph_net/Products/AGTEC250-35

[callisto]

So it's not a grab n go then?   😂

[johninderby]

These are the people who could easily handle the scope.

 

[neil phillips]

7 minutes ago, johninderby said:

Nah want something a wee big bigger.

https://astrograph.net/epages/www_astrograph_net.sf/en_GB/?ObjectPath=/Shops/www_astrograph_net/Products/AGTEC250-35

Thats what hes Ex thought

[neil phillips]

On 16/11/2021 at 13:09, vlaiv said:

About as large as 8" F/6 newtonian. Probably as twice as heavy and about 20-30 times more expensive?

 

Shame i couldnt do a head to head on lunar, with my 245 mm F6.3 Orion. And see how much better the 10" refractor is would it be better ? probably. But i wonder by how much. Certainly not 46x better 

Edited November 17, 2021 by neil phillips

[vlaiv]

1 minute ago, neil phillips said:

Shame i couldnt do a head to head on lunar, with my 245 mm F6.3 Orion. And see how much better it is. would it be better ? probably. But i wonder by how much. Certainly not 46x better 

Visual or imaging?

For imaging - you'd be surprised by the lack of difference.

All those things that create better visual appearance - local contrast, better strehl / tighter PSF are simply overcome by use of wavelets and subsequent sharpening of images. That is the reason why we never can have as good view as images we produce with our scopes - and the reason why SCTs for example produce excellent planetary images although they have 33%+ CO.

[neil phillips]

1 hour ago, vlaiv said:

Visual or imaging?

For imaging - you'd be surprised by the lack of difference.

All those things that create better visual appearance - local contrast, better strehl / tighter PSF are simply overcome by use of wavelets and subsequent sharpening of images. That is the reason why we never can have as good view as images we produce with our scopes - and the reason why SCTs for example produce excellent planetary images although they have 33%+ CO.

Was thinking imaging. Agreed shortcomings could be processed out. To a degree.

[Mr Spock]

'tis a thing of beauty 

[DaveS]

£11k is actually not bad for a 180mm triplet apo, the TEC is twice that.

[DaveS]

5 hours ago, johninderby said:

Nah want something a wee big bigger.

https://astrograph.net/epages/www_astrograph_net.sf/en_GB/?ObjectPath=/Shops/www_astrograph_net/Products/AGTEC250-35

 

5 hours ago, callisto said:

So it's not a grab n go then?   😂

Oh, it is grab 'n' go. He's grabbed it and now his back's gone!

[John]

It's a great looking scope and big refractors always get a lot of attention at star parties and shows, quite understandably.

Having owned a few 150mm refractors I'm not sure that I could comfortably handle a 180mm though

I believe that one of our members is waiting for a 200mm plus triplet refractor in due course - that will be something to marvel at as well

 

 

[PeterW]

@GavStarbit harder to hide than the ones you’ve got and probably a bit heavy for tour trusty  mount too!

Peter

[Deadlake]

@GavStar you will need a hoist to get that down from the top room, time for an obs? Of course we could ask @Tyson M for pointers as he is a bit of an expert on this. 😃 APM max load mount on order?

Edited November 18, 2021 by Deadlake

[Boki Aristarh]

If somebody have one piece spare, it would be interesting to compare with our society Meade 178ED... 😊 😘

[Alkaid]

Looks like a good fit for an old EQ2 I have lurking about  🙂

[Robindonne]

For pre-orders they give away an ascom compatible cleaner 

Edited November 18, 2021 by Robindonne