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New 6" F/8 ED Doublets from APM Telescopes

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#301 Benjamin B

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Posted 11 November 2012 - 02:56 PM

That is one large telescope. Really nice!

#302 johnnyha

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Posted 11 November 2012 - 08:11 PM

Sweet! Congrats, Markus! Nice to see this out there so quickly, I can't wait to here some reports.

#303 Jeff B

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Posted 12 November 2012 - 10:56 AM

Markus:

A nice set up. I know when you drag stuff over here for shows you don't like taking it back overseas with you sooooooo........ I'm serious. Is that sample 4 sale?

Jeff

#304 stevew

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Posted 12 November 2012 - 04:25 PM

Wow, it looks great.
Congratulations Markus.

Steve

#305 APM M.Ludes

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Posted 13 November 2012 - 03:04 PM

Hi Guys

after a long flight I came back this morning to germany and did already a full day job :-), now reading here a bit and then its time for some hours sleep.
The focuser on the pictures is not racked out much , but a 2" extension was addet to rich focuse on bright lights inside the big hall.
To bad there was no good clear sky for a starparty to show its potential.
Nobody took the chance to buy it, so its now on the way back to Germany and I will have it for showing at 24 november at our day of open house for european guys to look on it and through it.

#306 rboe

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Posted 13 November 2012 - 03:44 PM

I was sorely tempted but in the end, too many other bills due at the same time. :(

#307 rboe

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Posted 13 November 2012 - 03:45 PM

I was VERY impressed with the Leica zoom you had in it for a bit. That is one heck of a zoom.

#308 dbs

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Posted 14 November 2012 - 08:15 PM

Hi Guys

after a long flight I came back this morning to germany and did already a full day job :-), now reading here a bit and then its time for some hours sleep.
The focuser on the pictures is not racked out much , but a 2" extension was addet to rich focuse on bright lights inside the big hall.
To bad there was no good clear sky for a starparty to show its potential.
Nobody took the chance to buy it, so its now on the way back to Germany and I will have it for showing at 24 november at our day of open house for european guys to look on it and through it.


Markus, thanks for hauling this scope around the world so that pple can get to see it.

I can't wait for the commercial production to start.

#309 APM M.Ludes

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Posted 15 November 2012 - 12:01 PM

the commercial production started today , 50 pc telescopes and 10 pc lens in cell, arrival end of february

we take now pre orders

#310 Alvan Clark

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Posted 16 November 2012 - 10:13 AM

Which specific telescopes are the cells going to be designed to fit?

#311 APM M.Ludes

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Posted 16 November 2012 - 11:01 AM

our apo tubes only.
To use them on another scope, you need a custom made adapter rin, we can offer that to anybody

#312 Richard Low

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Posted 21 November 2012 - 07:08 AM

Hi Guys

after a long flight I came back this morning to germany and did already a full day job :-), now reading here a bit and then its time for some hours sleep.
The focuser on the pictures is not racked out much , but a 2" extension was addet to rich focuse on bright lights inside the big hall.
To bad there was no good clear sky for a starparty to show its potential.
Nobody took the chance to buy it, so its now on the way back to Germany and I will have it for showing at 24 november at our day of open house for european guys to look on it and through it.


Nice scope, Markus, good job on that!

I look forward to compare that with my APM/LZOS triplet 6" f/8 when the opportunity arises :)

#313 James Ling

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Posted 21 November 2012 - 08:25 PM

Hi Richard....

Yes, this scope will be shipped out next week to me, and I hope this scope will make it for Gary's talk cum astro gazing event on 8th Dec 2012.....

I hope you can bring yours for side by side comparison on 8th Dec 2012....

Regards

James Ling

#314 APM M.Ludes

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Posted 27 November 2012 - 02:53 PM

first sample was shipped, a second sample will be shipped next days to UK for demo work

50 pc scopes and 10 pc upgrate lenses in cell coming in March

the pre order list fills up quite nice

you want one ? get in touch with me now

#315 James Ling

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Posted 03 December 2012 - 10:28 PM

first sample was shipped, a second sample will be shipped next days to UK for demo work

50 pc scopes and 10 pc upgrate lenses in cell coming in March

the pre order list fills up quite nice

you want one ? get in touch with me now


Hi Markus....

The 1st sample you shipped out last week, already reached my country.
Now is waiting for custom clearance....
I am very sure now it will be ready for this coming weekend 1st light planned activity...provided the weather is fine, as is raining season at this moment in our region....

I have also announced it in our local astronomy forum....

Regards

James Ling

#316 Live_Steam_Mad

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Posted 19 December 2012 - 07:48 PM

Had a chance to test it on Jupiter yet James?

For the 1st time a few nights ago I managed to see good details within the South belt of Jupiter using my friend Jon H's 8" LX90 ACF (prior to this it was either fogged over - before we got the dew heater! - or the GRS was on the opposite side of the disc) although admittedly I only tried looking properly at Jupiter the last couple of times I've been up to his house. Also his SCT is not collimated all that well, at 250x I can see the 3 or 4 diffraction rings going very noticeably to one side at focus!

I wonder how much more detail I would see with this 6" F8 from Markus? Would Jupiter's disc be nice and purple-free at 250x ?

Cheers,

Alistair G.

#317 James Ling

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Posted 20 December 2012 - 01:37 AM

Alistair G.

Yes... I have tested this new 152 APM ED APO, a few times....
And is reported both in the CN refractor and outreach sections.

And for Jupiter, I have seen it twice with this new scope...
1st time , at home, through my window, and the jupiter's GRS is very well defined. The max magnification I used at the first light at home is 250X.
The 2nd time, is its first outdoor 1st light at our local library side walk, which it also delivers high contrast and showing numerous cloud bands, but unfortunately GSR is not visible at that time

Last weekend suppose to do a scope to scope comparison with my astronomy friend's 152 APM triplet APO, on Jupiter, but unfortunately the weather is not promising...
And we are planning for this coming weekend scope testing again....

I will keep everyone in CN, updated on the status, after this weekend till Christmas time, as I should have many days to test this scope.....

Regards

James Ling

#318 APM M.Ludes

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Posted 30 December 2012 - 09:59 AM

A quick note to the discussion on the refractor forum regards correction of our chinese and LZOS 152 doublet ED. both are not designed to reduce purple and increase red spotts. Both are correct designed, optimized for visual observations, tthe classic tradional metthod !!!!!!!!!!!!!

Simply check out the spots and LA curves on our webside and also Strehl curve

Thanks for your attention

#319 Gord

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Posted 31 December 2012 - 01:53 PM

Hi Markus,

I realize you can't participate in the other discussion, but please contribute anything you would like to see mentioned over there and we'll liaison between the two threads.

Thanks,

#320 APM M.Ludes

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Posted 01 January 2013 - 06:28 AM

Hi Gord,

Happy new year.
Thanks for your offer, but that is against TOS, if I try that i get also banned for livetime here

Best
Markus

#321 Gord

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Posted 01 January 2013 - 07:54 AM

Ugh. Happy New Year to you as well Markus!

Clear skies,

#322 Ambiorix

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Posted 02 January 2013 - 10:30 AM

Richard, has allready been done by James ling,see refractor forum!

Doublet has no CA, but had softer image on jupiter's globe and not so good definition on the moons neither.....

#323 Richard Low

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Posted 02 January 2013 - 12:00 PM

Yes it is done...and I had also just posted my first impression in the refractor forum.

#324 APM M.Ludes

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Posted 02 January 2013 - 04:41 PM

Hi Richard,

363 x power in a 6" is simply to much power for any 6" , no matter how perfect it is, that is a exit pupille of 0.41 mm

That’s aso called a empty power, that’s 60.5 power per inch

Worldclass manufacturers guarantee maximum 50 power per inch

If you take a FS 102 and a TSA 102 on Jupiter, and you gop up to about 150 power you will see that the FS 102 hold up perfectly to the much better colorcorrected TSA, but if you go to 200 or 250 power, you will notice that the FS 102 will brake down against the TSA due its lack of perfect CA, that is normal

So if you do such tests, please stay in the normal max power range and the normal max power range is 1.5 x of the aperture, but not more then 2 x aperture.

Overpower will make bad image

Would like to see the same review on Jupiter again with same stardiagonal and normal power for a low contrast object like Jupiter which is around 180 to 220 x...thats what I use max in worldclass 6" Apos

many thanks

#325 Richard Low

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Posted 02 January 2013 - 06:56 PM

Markus, thank you for your feedback.

After >36 years of observing here and elsewhere, I know what you meant, but that doesnt typically apply here. We usually have good seeing here that allows our 6" apo to give sharp planetary images above 350x. My 15" dob with Zambuto mirror regularly gets sharp planetary images at 450-600x. Thete was one occasion I had a wonderful view of Saturn sharp at 600x in a 6" apo on a night of exceptional seeing. I had viewed good Lunar image through my APM/LZOS 6" triplet at >1200x before.

So 363x for 6" apo is actually alright here.






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