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From: TerryMoselaol.com Date: Tue, 16 Nov 2004 09:13:45 EST Subject: A Lidl confusion Hi all, Further to the last email on the Lidl Telescopes; some clarification of their website info may be helpful! A. The ETX-70 Computer telescope. 1. It refers to 3 eyepieces, but only gives details for one - a MA25mm (MA = Modified Achromat - a fairly basic type) 2. The reference to "planetarial fog" should of course be "planetary nebulae" (the joys of translation!) 3. By a process of deduction & some simple maths the highest power eyepiece of the three must be a 4mm (type not known). 4. That then explains the odd description given under "Magnification" as: "14x -262, 5x". It should be "14x - 262.5x" the latter figure being the power of the 4mm eyepiece + 3x Barlow used with a 350mm FL telescope! 5. The other eyepiece must be a medium power one, say about 10mm, giving a power of approx. 35x, or 105x if used with the Barlow. NB: Although I'm sure that the GoTo will indeed point the telescope, once it's set up properly, to any of the 1400 objects in the database, bear in mind that you may not be able to see all of them through that telescope! For example, if you input "M76", it will probably point to get it in the field of view, but as it's magnitude 11.5, you may not see it, unless you have very clear, very dark, skies! Some of the NGC objects will be even fainter, and even harder to see! B. The 70mm Skylux Refractor. 1. It doesn't specifically mention it, but a 3x Barlow is also included. 2. Again, the website doesn't specifically mention it, but there are slow motion controls on both axes. 3. If the telescope package is exactly the same as last year, it will also include an accessory / stabilising tray on the tripod, and maybe an erecting (terrestrial) eyepiece too. General: My personal opinion is that for a reasonably competent & knowledgeable amateur, it's not worth paying the extra for the GoTo telescope. A telescope of that size will perform best on bright objects such as the Moon & major planets, & the Sun by projection or with a Mylar filter (but don't try observing the Sun unless you KNOW what ALL the risks are!), and bright objects such as the Pleiades, M31, M42, M13 etc. Most of you don't need 'GoTo' to find them! Also, with an F/ratio of F/5, it won't give as good images as the F/10 Skylux. It also has the benefit of powered tracking, but is that worth the extra 110 euro? But that's just my personal opinion, and if you want the convenience of battery-powered drive, & GoTo to find your targets, then it's good value. Clear Skies, Terry Moseley
Last Revised: 2004 November 16th
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