Unusual APM

[Chris]

I've not seen one of these before:

http://ensoptical.co.uk/apm-130mm-quad

 

[Alan White]

Chris,

Step away from the buy now button!

Interesting refractor.

[Alan White]

Do you reckon it will be ok on the AZ4?  ?

[Chris]

5 minutes ago, Alan White said:

Chris,

Step away from the buy now button!

Interesting refractor.

Haha! If you move the decimal place once more to the left I might afford it 

It sure is a pretty scope though  

Edited July 13, 2017 by Lockie

[Alan White]

But at 14kg+ what would you mount it, even if it were a more budget price?

[Chris]

Just now, Alan White said:

But at 14kg+ what would you mount it, even if it were a more budget price?

Well that rules out me even if the decimal does slip to the left, think it might be too much for my EQ3 with single counter weight 

14kg, doesn't a C11 weight about that!

[Chris]

Just checked and a C11 is 12.5kg so 14kg is one massive 5" refractor. I'm guessing there is a lot of metal in the cell for 4 x 5" elements, big focuser too!

[Alan White]

A nice Losmandy or similar mount or Astro Physics, 

that would be a nice combination.

 

[Chris]

12 minutes ago, Alan White said:

A nice Losmandy or similar mount or Astro Physics, 

that would be a nice combination.

 

Yeah something like a G11 would set it off nicely I reckon  

[DaveS]

It would sit nicely on my DDM60, imaging capacity 28kg.

My only concern would be for the dreaded "blue bloat"

[John]

Bit late to this thread.

The scope is a rather early APM collaboration with Mathias Wirth. The interesting thing (which I don't know the answer to) is whether Wirth was involved with figuring the objective lens. If so then the scope is very special indeed. I've seen a scope with the same tube for sale around 10 years back in an optical dealer north of Bristol for around the same price as it's being offered for here.

The risk is in the objective. A triplet is a specialist job to collimate. A quad even more so I feel

It is quite a heavy scope for it's spec - my F/9.2 130mm APM / TMB / LZOS triplet is 9.5 kg all up (rings, diagonal and finder included).

I reckon that the scope might take a while to find a new home at virtually £3K. We will see ....

Edited July 17, 2017 by John

[Stu]

11 minutes ago, John said:

Bit late to this thread.

The scope is a rather early APM collaboration with Mathias Wirth. The interesting thing (which I don't know the answer to) is whether Wirth was involved with figuring the objective lens. If so then the scope is very special indeed. I've seen a scope with the same tube for sale around 10 years back in an optical dealer north of Bristol for around the same price as it's being offered for here.

The risk is in the objective. A triplet is a specialist job to collimate. A quad even more so I feel

It is quite a heavy scope for it's spec - my F/9.2 130mm APM / TMB / LZOS triplet is 9.5 kg all up (rings, diagonal and finder included).

I reckon that the scope might take a while to find a new home at virtually £3K. We will see ....

I certainly caught my eye John  

Not that I am in a position to buy it but it seems very interesting. I think I would want a money back guarantee until I had had it checked out by someone who know what they were doing, ideally Es Reid!

I'm interested to know what the configuration is, I'm assuming a front doublet with a rear reducer/flattener doublet too?

As said, it's a heavy scope. The benefit of a 130 seems to be great views without the bulk of a 150 so this one sort of falls between two stools really. I love the look and design though.

[John]

I think it might be a 4 element objective but I'd have to do a lot more research to find out for sure.

 

Edited July 17, 2017 by John

[rwilkey]

On 13/07/2017 at 21:35, Alan White said:

Do you reckon it will be ok on the AZ4?  ?

No, an AZ4 will not support it in my opinion.

[spaceboy]

Stupid question! Who would want a scope like this? I'm not knocking it as l'd love it!! but in all practicality what advantages could be expected? I'm guessing it is more an imaging scope over visual ? I'm guessing though that visually this particular scope would be mind blowing if you had a set of ziess ortho to unleash the full potential. A lot of money for a used scope so I'd love to be bff with the person who bought it new ?

[Chris]

2 hours ago, rwilkey said:

No, an AZ4 will not support it in my opinion.

 

1 hour ago, spaceboy said:

Stupid question!

Just checking, but you do know he was joking about the AZ4 right? Well at least I think he was, that's how I took it lol

[Stu]

On 17/07/2017 at 14:25, John said:

I think it might be a 4 element objective but I'd have to do a lot more research to find out for sure.

 

From what I've found John I think you are right.

Might make sense as an imaging scope but not really for visual I think. Very front end heavy I should think, long cool down time and scary if the elements get out of whack!

Still think it looks lovely though  

[garryblueboy]

I saw Steve on Monday eve he was collecting  this scope from  ES Reid so would think it's sorted optics wise 

Edited July 19, 2017 by garryblueboy

[spaceboy]

4 hours ago, Lockie said:

 

Just checking, but you do know he was joking about the AZ4 right? Well at least I think he was, that's how I took it lol

 

Yes I gathered it was in humour. Mine was the stupid question I meant.

[Solar B]

Gone !! ... I had the pleasure of looking through one of these some years back and can honestly say that the views

were extraordinary ... the likes of which I'm unlikely to forget ... it had also been sorted by Es

 

Brian 

[Chris]

39 minutes ago, Solar B said:

Gone !! ... I had the pleasure of looking through one of these some years back and can honestly say that the views

were extraordinary ... the likes of which I'm unlikely to forget ... it had also been sorted by Es

 

Brian 

It has as well! Did you buy it, Bryan? the above slightly implies it, maybe?  

[Chris]

On 7/19/2017 at 18:45, spaceboy said:

 

Yes I gathered it was in humour. Mine was the stupid question I meant.

My bad  

[Solar B]

No not i Chris .... an amazing scope though and a most fortunate new owner plus I'm sure your wondering how it could be much better than say an FPL53 but it was as I owned/was using an equinox at that time and place !

 

 

Brian 

[John]

My APM / TMB / LZOS 130 triplet is very impressive indeed. No false colour at all, on any object and even either side of focus. No FPL-53 in that lens though.

[Solar B]

These quads offer much more though .... it's hard to discribe but they do offer up colours (not false) that are just not discernible 

with other EDs & triplets .... they are FS killers (did I really say that ?) and with only about 12 or 15 ever made have 

real legendary status imho.

 

Brian