Tasco Optics - Page 4 - Popular Questions, Answers, Tips & Manuals
Looking for owners manual for tasco model 302012
Look through this web site for one that is similar to your scope. However I don't know why you need a manual for this very simple telescope. The manual will not show you how to find objects in the night sky. It is only very simple assembly instructions.
http://www.tasco.com/pages/instruction-manuals/
7/25/2015 5:07:46 PM •
Tasco Optics
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831 views • 0 helpful votes
What is the lens configuration for a tasco telescope 25 30mm?
From the picture it looks like you are holding a small finder scope which usually mounts onto a larger telescope. Usually these are all one unit and do not have replacement eyepieces. If someone took the lens out throw it away as these can be bought for less than $20 brand new. It cannot be fixed at reasonable cost.
8/8/2015 3:03:36 PM •
Tasco Optics
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265 views • 0 helpful votes
About my tasco 46-060675 D=60mm F=900mm come with 3 eye lense 1(sr4mm) 2 (k10MM) 3(k25MM) and two tube 1(1.5x erecting eyepiece) 2 (3xbarlow lense
The different eyepieces are to give different magnifications. This is worked out by dividing the focal length of the telescope, f = 900, by that of the EP. So the 25 mm Kellner (that is the type of optics in the EP) will give 900 / 25 = 36 times magnification.
The erecting eyepiece is used for terrestrial viewing. Normally with an astro telescope everything is upside down as that does not matter when looking at a star. So when you want to look through someone's bedroom window you use this.
A Barlow lens is an add-on magnifier. If you add this onto any EP (it normally fits between the EP and the scope) it will increase magnification x 3.
There is a practical limit to what any scope will deliver, governed by its aperture (the size of the front lens) and for your scope this will be about x 120 magnification. Beyond that the image becomes too dim and fuzzy. This means that your 4 mm eyepiece ( x 225 magnification) won't be much use. It will be hard to find the object you are trying to observe, it will be hard to focus, and the image will wobble around. Nor is your barlow lens much use either I fear.
You might consider another eyepiece around 18 mm to give a nice spread. A Plossl type is good. If you get serious about astronomy, I think you will immediately want a better scope after using the Tasco.
3/23/2015 1:25:50 PM •
Tasco Optics
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496 views • 1 helpful votes
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