Show us your LZOS Scope

[vineyard]

48 minutes ago, tooth_dr said:

Here mine 😜 

APM LZOS 105/650 with 0.75x RR reducer, 3.5” FT focuser with motor.

That looks like an awesome setup - Mesu, Epsilon, LZOS, QHY[268M?]? 👏🏾👏🏾

[tooth_dr]

23 minutes ago, vineyard said:

That looks like an awesome setup - Mesu, Epsilon, LZOS, QHY[268M?]? 👏🏾👏🏾

Thank you!  QHY268M for lum and NB, and a ZWO2600MC for colour.  I also just purchased a labelling machine, so you can see that practically everything got labelled 😂

[newbie alert]

7 minutes ago, tooth_dr said:

Thank you!  QHY268M for lum and NB, and a ZWO2600MC for colour.  I also just purchased a labelling machine, so you can see that practically everything got labelled 😂

[Deadlake]

Some more photos:

Now see how short it is:

 

 

And as for the focuser:

Ok, should be photo bombed out.

 

[John]

4 hours ago, Deadlake said:

This is a Rupert @ Astrograph special APM 130/ F6 scope. Hand delivered. 

LZOS lens with a Strehl of 0.978. The phenolic tube is reduced 4cm from the standard KUO tube to allow more infocus for binoviewer use.  The tube has baffles whereas the APM phenolic tubes no longer do.

Usually Starlight 3.5" FT focuser and tube rings.

Comes as standard with a handle, unlike a certain Japanese manufacture...

In addition no more LZOS lens cells till January 2023, so I don't expect many more posts here for some time.

Not seen first light, however I expect clouds...

I'll post some pictures next to a Vixen SD103S so you can see how much shorter it is.

That looks really superb - congratulations

If there are not to be any more for a while I'd better post another pic of mine

 

[jetstream]

@Deadlake I love REAL TEST REPORTS LIKE YOURS.

Note the 532nm test wavelength vs the 600+ typical wavelength. This scope will perform beyond your expectations IMHO.

[John]

36 minutes ago, jetstream said:

@Deadlake I love REAL TEST REPORTS LIKE YOURS.

Note the 532nm test wavelength vs the 600+ typical wavelength. This scope will perform beyond your expectations IMHO.

When I've seen LZOS scopes tested independantly (eg: by Herr Rohr) they usually do a touch better than the supplied tests. I think the latter are mainly to demonstrate that the objective has passed the quality control levels stipulated by APM.

 

 

Edited August 6, 2021 by John

[Deadlake]

1 hour ago, John said:

When I've seen LZOS scopes tested independantly (eg: by Herr Rohr) they usually do a touch better than the supplied tests. I think the latter are mainly to demonstrate that the objective has passed the quality control levels stipulated by APM.

 

 

The accuracy of the test bench is such that it could really be 0.98 Strehl, but as noted the atmosphere needs to cooperate to make use of it…

[Highburymark]

That’s a real beauty Deadlake!  Congratulations. 

[Oldfort]

Can I play, please please.

[jetstream]

20 hours ago, John said:

When I've seen LZOS scopes tested independantly (eg: by Herr Rohr) they usually do a touch better than the supplied tests. I think the latter are mainly to demonstrate that the objective has passed the quality control levels stipulated by APM.

 

 

This is what Ive seen also and I think testing in green is a tougher measure than testing in red IMHO.

Edited August 7, 2021 by jetstream

[CraigT82]

40 minutes ago, jetstream said:

testing ig green is a tougher measure than testing in red IMHO.

Yup that is physics. 1/10th of a wavelength of green light PtV is smaller than 1/10th of a wavelength PtV of red light (55nm vs 65nm).

Testing in red is a cheap trick to make optics look a bit better than they are imo (unless you're building a specialist infra-red scope 🤷‍♂️)

 

[garryblueboy]

Not quite an LZOS but not far off An Astreya Quadruplet Russian optics by Andre Strakhov 001 formerly Intes micro Tube and design  TMB-APM -Mathias Wirth Kruprux tube 

[JeremyS]

1 hour ago, garryblueboy said:

Not quite an LZOS but not far off An Astreya Quadruplet Russian optics by Andre Strakhov 001 formerly Intes micro Tube and design  TMB-APM -Mathias Wirth Kruprux tube 

What’s the Tak tiddler on the other side, Garry? 

[garryblueboy]

That’s a Tak 76 Jeremy 

[KP82]

On 06/08/2021 at 18:20, jetstream said:

@Deadlake I love REAL TEST REPORTS LIKE YOURS.

Note the 532nm test wavelength vs the 600+ typical wavelength. This scope will perform beyond your expectations IMHO.

All those zygo test certificates I've seen online from companies like TS Optics, WO, Altair, etc. never indicate the wavelength that was chosen for the test. So I thought there was an industrial standard wavelength which everyone sticks to. Looks like this is not the case then.

Edited August 9, 2021 by KP82

[jetstream]

11 minutes ago, KP82 said:

All those zygo test certificates I've seen online from companies like TS Optics, WO, Altair, etc. never indicate the wavelength that was chosen for the test. So I thought there was an industrial standard wavelength which everyone sticks to. Looks like this is not the case then.

Whats real interesting is seeing interferometer reports in blue, green and red...for the same scope

[KP82]

12 minutes ago, jetstream said:

Whats real interesting is seeing interferometer reports in blue, green and red...for the same scope

True. Poly-strehl is far more useful than just the figure from the red.

But I'm fine with 532nm green. I suppose not even the premium brands want to show their 450nm blue test results when everyone else are doing the test in red.

[Stu]

I can play here too now 😀. Looks like my objective has been around for a while, but it’s a decent strehl and they are in short supply so that’s fine by me.

[Andrew_B]

On 08/08/2021 at 11:28, garryblueboy said:

Not quite an LZOS but not far off An Astreya Quadruplet Russian optics by Andre Strakhov 001 formerly Intes micro Tube and design  TMB-APM -Mathias Wirth Kruprux tube 

That's a fantastic looking scope although looks like it must weigh a ton!

What design is it using to have 4 elements? Is it a flatfield Petzval or something else?

[garryblueboy]

3 hours ago, Andrew_B said:

That's a fantastic looking scope although looks like it must weigh a ton!

What design is it using to have 4 elements? Is it a flatfield Petzval or something else?

Hi it is a bit of a beast it’s Optics are  By Astreya  it’s a Doublet Doublet in one cell done by Andre Strakhov and very high Strehl totally colour free 

Edited September 11, 2021 by garryblueboy

[John]

These are really great scopes

According to Markus Ludes at APM, demand and sales of the 130mm F/6 LZOS are around 4x-5x higher than for the F/9.2. That's unsurprising really given that the F/6 is so much more suitable for imaging as well as more of an "all rounder" for observing.

As of this time last year, Markus said that the total production of F/9.2's would be likely to top out at around 130 units. The highest serial number that I've seen for sale to date is #123.

 

 

 

 

Edited September 11, 2021 by John

[tooth_dr]

Doubled up 

 

[newbie alert]

On 06/08/2021 at 12:49, Deadlake said:

This is a Rupert @ Astrograph special APM 130/ F6 scope. Hand delivered. 

LZOS lens with a Strehl of 0.978. The phenolic tube is reduced 4cm from the standard KUO tube to allow more infocus for binoviewer use.  The tube has baffles whereas the APM phenolic tubes no longer do.

Usual Starlight 3.5" FT focuser and tube rings.

Comes as standard with a handle, unlike a certain Japanese manufacture...

In addition no more LZOS lens cells till January 2023, so I don't expect many more posts here for some time.

Not seen first light, however I expect clouds...

I'll post some pictures next to a Vixen SD103S so you can see how much shorter it is.

That's a stunner...

[Boki Aristarh]

Rupert Astrograph is perfect!

Maybe not important, but I like very much tube color and gray/black/orange combo...