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Equipment Discussions >> Cats & Casses

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budman1961
Pooh-Bah
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Reged: 02/25/11

Loc: Springfield, MO
Re: Meade's new LX800... new [Re: mmalik]
      #5108780 - 03/06/12 04:09 PM

I got an email from OPT today, says they spoke to Meade yesterday, and shipping would begin in 4-6 weeks.....

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Micheal
sage


Reged: 02/28/10

Loc: Corona, CA
Re: Meade's new LX800... new [Re: budman1961]
      #5113576 - 03/09/12 02:16 PM

Not bad. their original projected shipping time was Feb/march. So May isnt really that bad. Of course that was for the 14" ota version. Meade only ever demoed the 10" ota so it could be that the 14" version is months away still and only the mounts are shipping in 4-6 weeks

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mmalik
Post Laureate
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Reged: 01/13/12

Loc: USA
Re: Meade's new LX800... new [Re: mmalik]
      #5127247 - 03/17/12 03:43 PM

StarLock according to Meade advertisements is patent-pending technology, so it would be safe to presume it is proprietary. Although I do understand innovation requires venturing into new avenues, ideal would have been using industry standards and taking them a step further which currently are typically a combination of (a) an opto-isolated ST-4 for guiding and (b) a USB port for software-assisted target acquisition & power. I am not suggesting an external computer & software here (though nothing wrong with that), but having the ability to utilize third party hardware with the computer assisted logic that Meade seems to have incorporated into the electronics module on LX800. What I am intending here is a dual-port StarLock system that were standards based.

A “hypothetical dual-ported” StarLock with...
a) USB port for software-assisted automatic target acquisition/power and
b) ST-4 port for opto-isolated guiding

...would have taken existing industry standards to a higher level instead of cramming both standards into one proprietary port which may not sustain itself or industry may not want to adopt, and astronomers may not be able to take advantage of with their existing guiding investments.

With the proposed setup, folks who may not want to use StarLock (in favor of what they may have or may like better), would have had an option to use a third party autoguider camera and still plug into a (hypothetically speaking) standards based USB port on LX800 without having to attach an external computer for target-acquisition logic. Such an approach probably would have required using one instead of currently two auto-guiding cameras, which in my opinion wouldn’t have been a limiting factor given the enhancements in astrophotography equipment.

This may be wishful thinking, but is in the spirit of standardization—not proprietarization. Your thoughts?


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mmalik
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Reged: 01/13/12

Loc: USA
Re: Meade's new LX800... new [Re: mmalik]
      #5129734 - 03/19/12 01:41 AM

Is it correct that 130mm ED APO comes with different diagonals depending upon the package?

1) LX800 130mm ED APO Telescope-1.25" diagonal
2) 130mm ED APO (Telescope ONLY)-Enhanced 99% reflectivity diagonal (I presume this would be 2" diagonal)


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sphelps
member


Reged: 07/03/10

Re: Meade's new LX800... new [Re: mmalik]
      #5149680 - 03/31/12 02:55 AM

Does anyone have an updated shipping date? Meade's Sky and Telescope Ad says they are shipping now although Meades website says still not available. Very confusing and misleading.

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DaveJ
Carpal Tunnel
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Reged: 01/07/05

Loc: NE Ohio
Re: Meade's new LX800... new [Re: sphelps]
      #5149875 - 03/31/12 09:30 AM

Quote:

Does anyone have an updated shipping date? Meade's Sky and Telescope Ad says they are shipping now although Meades website says still not available. Very confusing and misleading.




Absolutely nobody knows...at least if they know, they're not telling. Check the "Mounts" forum and you'll find lots and lots of speculation, but no answer to your question. This is an informative post, but no answers provided.


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mmalik
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Reged: 01/13/12

Loc: USA
Re: Meade's new LX800... new [Re: DaveJ]
      #5152719 - 04/02/12 03:02 AM

While LX80 thread is "happening" place these days, any news/insights on how auto-guiding testing is coming along on LX800? Is it/will it be what's it’s touted out to be?

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Phil Cowell
Carpal Tunnel
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Reged: 05/24/07

Loc: Southern Tier NY
Re: Meade's new LX800... new [Re: mmalik]
      #5152810 - 04/02/12 07:15 AM

Quote:

While LX80 thread is "happening" place these days, any news/insights on how auto-guiding testing is coming along on LX800? Is it/will it be what's it’s touted out to be?



Just like the LX80 the LX800 is not available yet. Asking questions is not going to be fruitful here either. Testers would be under an NDA which prevents them from talking about the testing. Sit back and wait like the rest of us.
The LX80 is "happening" because the manual has been released and if you read it there is some data there.


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Durval Menezes
super member


Reged: 08/30/10

Loc: Rio de Janeiro, Brazil.
Re: Meade's new LX800... new [Re: Phil Cowell]
      #5168338 - 04/12/12 11:30 AM

Hi,

Quote:

Just like the LX80 the LX800 is not available yet. Asking questions is not going to be fruitful here either. Testers would be under an NDA which prevents them from talking about the testing. Sit back and wait like the rest of us.




Are you sure? It's listed at Hayneedle, theoretically "ready to ship" (at list they don't show any "preorder" or "waiting shipment" messages):
http://www.hayneedle.com/sale/meadelx800germaneqmountwithstarlock1.cfm

Cheers,


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my_universe
member


Reged: 01/07/10

Re: Meade's new LX800... new [Re: Durval Menezes]
      #5168963 - 04/12/12 05:23 PM

In fact they state "Ships May 3rd." Sounds certain. We'll see.

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Micheal
sage


Reged: 02/28/10

Loc: Corona, CA
Re: Meade's new LX800... new [Re: my_universe]
      #5169150 - 04/12/12 07:32 PM

The 14" OTA version says ships June 1st. About what I expected.

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LouHalikman
member


Reged: 02/23/11

Loc: North Central Maryland
Re: Meade's new LX800... new [Re: Micheal]
      #5169259 - 04/12/12 08:46 PM

Do we know what the central obstruction will be? The web site still says TBD. Looks like about 40% in the photos, larger than the 12". Also, what is the weight of the OTA? Lou

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rmollise
Postmaster
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Reged: 07/06/07

Re: Meade's new LX800... new [Re: LouHalikman]
      #5169815 - 04/13/12 08:19 AM

I expect it will be about what the RCXes were.

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Jason B
Proud father of 5!!
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Reged: 06/21/04

Loc: Mid-Michigan
Re: Meade's new LX800... new [Re: rmollise]
      #5170169 - 04/13/12 11:22 AM

I am looking forward to seeing one of these in person at NEAF.

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Griffin!
sage


Reged: 09/12/10

Re: Meade's new LX800... new [Re: Jason B]
      #5170594 - 04/13/12 03:24 PM

Looks like the LX800 manual is up.

http://www.meade.com/software-manuals/telescope-manuals/lx-series


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mmalik
Post Laureate
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Reged: 01/13/12

Loc: USA
Re: Meade's new LX800... new [Re: LouHalikman]
      #5170767 - 04/13/12 04:55 PM

Quote:

Do we know what the central obstruction will be? The web site still says TBD. Looks like about 40% in the photos, larger than the 12". Also, what is the weight of the OTA? Lou




Here is the mathematics to answer your question (I think your guess on 14" for 40% is quite close, I am thinking may be ~38%)

LX800 10" f/8 ACF Central Obstruction Calculation Example:

Aperture=10"
Secondary Mirror Obstruction=4.58"
Pi=3.14
Area of entire aperture=3.14*(10/2)^2=78.50
Area of secondary mirror obstruction=3.14*(4.58/2)^2=16.47

Obstruction (by area method)=16.47/78.50=0.21=20.95% (Meade's way of calculating)

Obstruction (by diameter method)=4.58/10.00=0.46=45.80% (Others vendors' way of calculating)
Obstruction (by diameter, alternate method)=SQRT(16.47/78.50)=0.46=45.80% (Others vendors' way of calculating)


Overview using above calculation methods:
LX800 10" f/8 ACF:
Secondary Mirror Obstruction size=4.58"
Secondary Mirror Obstruction by area=20.95%
Secondary Mirror Obstruction by diameter=45.80%

LX800 12" f/8 ACF:
Secondary Mirror Obstruction size=4.93"
Secondary Mirror Obstruction by area=16.86%
Secondary Mirror Obstruction by diameter=41.08%

LX800 14" f/8 ACF:
Secondary Mirror Obstruction size=TBD
Secondary Mirror Obstruction by area=TBD
Secondary Mirror Obstruction by diameter=TBD

Conclusion: It appears 14" may be the way to go to get the least obstruction?

Edited by mmalik (04/13/12 05:09 PM)


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EddWen
Pooh-Bah


Reged: 04/26/08

Re: Meade's new LX800... new [Re: mmalik]
      #5170907 - 04/13/12 06:12 PM

Does your number for Secondary Mirror Obstruction take the baffle diameter into account?

Edited by EddWen (04/13/12 06:13 PM)


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jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: Meade's new LX800... new [Re: mmalik]
      #5170986 - 04/13/12 07:02 PM

Quote:

Here is the mathematics to answer your question (I think your guess on 14" for 40% is quite close, I am thinking may be ~38%)

LX800 10" f/8 ACF Central Obstruction Calculation Example:

Aperture=10"
Secondary Mirror Obstruction=4.58"
Pi=3.14
Area of entire aperture=3.14*(10/2)^2=78.50
Area of secondary mirror obstruction=3.14*(4.58/2)^2=16.47

Obstruction (by area method)=16.47/78.50=0.21=20.95%




That's the most complicated scheme I've seen yet for this calculation.

Try this:

by diameter: 4.58/10 = .458 = 45.8%

by area: .458 X .458 = .210 = 21%

It's much easier, and because it avoids the rounding errors from putting Pi in and taking it back out again it's more precise.


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rmollise
Postmaster
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Reged: 07/06/07

Re: Meade's new LX800... new [Re: jrcrilly]
      #5170989 - 04/13/12 07:03 PM

There is likely no reason to "calculate." I expect the secondaries to be about what they were in teh RCX 400s.

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budman1961
Pooh-Bah
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Reged: 02/25/11

Loc: Springfield, MO
Re: Meade's new LX800... [Re: rmollise]
      #5171196 - 04/13/12 09:53 PM

The LX800 manual is up on Meades site here http://www.meade.com/software-manuals/telescope-manuals/lx-series. Go to the end, it gives the C/O stats and sizes.

Andy


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