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Subject: Moved Message By: Anonymous (xxx.xxx.222.132) Date: 12/08/2001 01:54:11 pm PST i agree, this guy dasentinel or whoever he is is full of crap. i don't believe he owns or has access to most, if not all of the scopes he claims he has experience with. this time he got busted, so a word to all readers, don't believe a word this guy say's. Subject: Moved Message By: Anonymous (xxx.xxx.113.81) Date: 12/19/2001 06:54:01 am PST is it possable to buy a diffrent mount for the LXD55 10" or 8". If so were can i get one and can I buy just the optical tube from meade and mount it on a diffrent tripod? Subject: Any Info on the LXD55's?? By: Anonymous (xxx.xxx.102.43) Date: 02/20/2002 06:46:22 am PST Dose anyone have any first hand info on this new line or know where I can get some??? I would love to own a LXD 55 8". I just can't find any user info from people who have them, any help-info would be greatful. Thanks, Peter Subject: Re: Moved Message By: Anonymous (xxx.xxx.236.55) In Reply to: Anonymous (xxx.xxx.113.81) (Original Message) Date: 03/20/2002 01:19:36 am PST > If you are willing to purchase the telescope all I want is the mount and is willing to fund to the value of £380 ($500) for the Goto you can contact us on s.richards4@ntlworld.com is it possable to buy a diffrent mount for the LXD55 10" or 8". If so were can i get one and can I buy just the optical tube from meade and mount it on a diffrent tripod? Subject: Re: Any Info on the LXD55's?? By: Anonymous (xxx.xxx.210.79) In Reply to: Anonymous (xxx.xxx.102.43) (Original Message) Date: 05/24/2002 10:31:27 am PST I recently received my LXD55 telescope with UHTC optics. I found that the mount on the telescope was not too small and that the tripod as well as the mount were both sturdy enough for high power use. I would highly recommend this scope due to it's superb view of planets and galaxies as well as nebulas. The autostar is really easy to align with a quick aligning to north and finding relatively bright stars like Arcturus of Vega. The telescope is rather large however, and can be quite hard to lug around although it is well worth the trouble with great images even fairly close to a decently sized city. I would recommend a barlow lens or high magnification eyepiece (like the series 4000 9.7 mm) to see high detail of the saturn and jupiter and seeing high detail of the moon. This telescope so far has been well worth the money and would definetaly encourage anyone debating a telescope to consider getting the LXD55 line. Subject: Re: vote by kb0nes By: Anonymous (xxx.xxx.123.17) In Reply to: kb0nes (Original Vote) Date: 09/23/2002 11:00:36 pm PST Well I don't have the scope yet, but what I want to say is that the obstraction is not 39%! What counts is the area obstructed, that is A=pi*r^2. r=radius, pi=3.14... So the area of the mirror is A1=129717,1 mm^2 and the area of the secondary if it is 3.1" as you say A2=19477,84 mm^2. The obstruction of the secondary is A2/A1=15%. Subject: Re: vote by kb0nes By: kb0nes In Reply to: Anonymous (xxx.xxx.123.17) (Original Message) Date: 09/30/2002 10:41:26 pm PST >Well I don't have the scope yet, but what I want to say is that the obstraction is not 39%! What counts is the area obstructed, that is A=pi*r^2. r=radius, pi=3.14... >So the area of the mirror is A1=129717,1 mm^2 and the area of the secondary if it is 3.1" as you say A2=19477,84 mm^2. >The obstruction of the secondary is A2/A1=15%. You must be reading Celestron and Meade literature that quotes Obstruction as percentage of area so as to make the numbers _look_ better. When you read any of the optical books that deal with telescope central obstruction they are refering to percentage of aperture in diameter not area. This number will be much larger of course. If all we were worried about was loss of light gathering then looking at obstruction on an area basis would be the right way to go. The loss of 15% of light gathered would be a non issue. The human eye really can't discern small differances in Illumination. What we are concerned about here is loss of contrast especially in low contrast objects like Planetary detail. The obstruction will also cause light to be moved from the Airy disk into the first diffraction ring. It is generally considered that telescopes obstructed up to 25% (or diameter NOT area) will not suffer a large loss in contrast. Obstructions that are greater will have more negative effects. Also optical abberations tend to be cumulative so that errors in the mirror's figure and collimation errors will "stack" with the obstruction issue making the scope perform more poorly then a scope with the same issues sans the obstruction. Meade chose a large mirror in the SN's to allow a 35mm film frame to be fully illuminated. This is a much larger area then needs to be illuminated for even the widest FOV low power eyepiece. The scope suffers from a greater central obstruction as a result and this will tend to make the scope perform more poorly on Planetary details. In fact a 3.1" mirror is large enough to be used in a 18" Newtonian visually. I feel it is a shame that they choose to size the mirror based on photographic use. As the scope comes the mount is really too marginal for any long duration imaging so few people will likely use them in this manner. If you wish to read more check out the book "Telescope Optics - A comprehensive manual for amateur astronomers" and the book "Star Testing Astronomical Telescopes by Suiter". Clear Skies, kb0nes Subject: Moved Message By: TelescopeFan Date: 11/26/2002 03:35:44 pm PST Packed with features, the 8" SN is sure to please!!! FEATURING: 1. Lots of plastic parts made in China!! 2. Loads of PE, with no autoguiding capability! (Perfect for all of you CCD imagers out there!) 3. Sticky plastic focuser - perfect for that jiggly image not found in lesser scopes! 4. Flexible aluminum legs! Don't be fooled by imitation 'wooden' tripod legs, only our legs are made of extruded aluminum to offer a liberal amount of flexing under the weight of an 8" OTA! 5. Mystery goto-ing! You will have hours of fun playing "where is my scope pointing to!" All you have to do is select an object to goto, and the Autostar will automatically point to a -different- location! You will have countless hours of enjoyment guessing at what object (if any) the scope is actually pointing to! This unique feature is not available on ANY other GOTO scope at any price! 6. NOISE! - and tons of it! Never again will you 'fall alseep at the wheel' as long as the LXD55 is aimlessly slewing to mystery objects! Perfect for those who like a 'less than quiet' observing environment! 7. Quick-detach tube rings! Our tube rings are so easy to detach, you don't even have to touch them! Your scope will effortlessly come off the mount ON IT'S OWN!!! What other scope can promise that? 8. Loads of customer support - and you will need it! You will spend countless hours on the phone with Meade - AT ABSOLUTELY NO COST TO YOU WHATSOEVER! Furthermore, you will spend countless more hours on the Yahoo! groups talking to all the other LXD55 owners! With some telescopes, you could be spending your time looking at celestial objects. With the LXD55, you can spend all of your time fixing it and searching the webgroups for information about how to get it to work properly! This is not your ordinary telescope! 9. Wide-field, low-power views! You will need it to find the object you were hoping the Autostar would find for you! 10. Three free trips to the post office! As a new LXD55 owner, you will be guaranteed at least three trips to the post office to pick up the replacement mount and parts that Meade sends to you! 11. Bent encoders! Only our encoders are bent at the factory to our exacting standards! 12. That satisfied feeling that you saved $500 over the LX-90 - a scope that doesn't feature any of these options! All of these 'research grade' options are only found on the new 8" LXD-55 Telescope! Order yours today! Prev Page 2 of 2 | ||||||||
