Question about Tasco Astronomical 302675 Telescope

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Everything looks so small through the scope, why?

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Did you expect to see views like the Hubble Space Telescope? Objects in the sky are smaller than the tip of your finger held at arm's length!

Probably your scope is not larger than 70mm so your maximum magnification will be about 120 power.

Join an astronomy club and attend their star parties and look through the members telescopes, and read my TIPS on my profile page.

Posted on Apr 29, 2010

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I was given a telescope and rolled one knob upward to look at sky and rolled other knob into position. Everything went black, so I rolled them back down. Still black. What did I do wrong?


You need to do two things before you take it out at night.

1. Align the small finder scope with the main tube. During the day time focus on a distant object like the top of a telephone pole. Without moving the main tube-- adjust the finder scope so the crosshairs point at the exact same spot.

2. Practice focusing during the daytime on distant objects.

Objects in the night sky are tiny-- smaller than the tip of your finger held at arm's length. The scope must be pointed directly at them,. Download a free monthly star chart at:
www.skymaps.com


www.telescopeman.org
www.telescopeman.us
www.telescopeman.info

Jul 20, 2011 | Optics

1 Answer

We purchased an edu science telescope. model - 70 mm astro-gazer telescope. When we look through the "finderscope" everything is upside down. What do we do to fix this problem?


It isn't a problem. Astronomical telescopes usually show an upside down image. There is a good reason for this- erecting the image needs more bits of glass in the light path, which reduces the amount of light and increases aberrations. Even if this is only slight, astronomers prefer to avoid it, and they don't really care which way up the Moon or Jupiter appear.

It is possible to fit an erecting prism or eyepiece to most astronomical telescopes, and some of them come with one (your main scope may have one), but one wouldn't bother to do this with the small finder scope.

Feb 02, 2011 | Edu-Science (10166) Telescope

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Just had a konusmotor 500 telescope and have built it to the instructions, but nothing on how to use. only a beginner but how do you increase the size of the object you are looking at,eg the moon looks the...


Are you viewing the moon through the small finder scope on top of the main tube? That is only used for aiming the scope, and has very little magnification. The moon should fill the field of view on even the lowest magnification on the main scope.

A reflector type scope has the eyepiece mount on the side of the main tube, near the top end, pointing into the side of the scope. This mount should have an eyepiece placed in it- use the one with the biggest number to start with (that will have the least magnification). Do NOT use the Barlow lens if one came with the scope. You look into the side of the tube with this type of scope, not along it.

New telescope users are taken by surprise at the difficulty of just pointing the telescope in the right direction to see anything. The field of view is quite limited, especially if you are using a high power eyepiece. The higher the power of eyepiece on a telescope, the dimmer the image, the more difficult to aim it at any chosen object, and the more difficult to focus. When the scope is not focussed, even if there are stars in the field of view, they will only be faint blurs.

The finder scope is meant to help you get the main scope lined up on the object you want to view, but it won't be any use in pointing the telescope until you adjust it to precisely line up with the main scope. Telescope manuals recommend that you do this in daylight, by pointing the scope at an object on the horizon and adjusting the finder to match (never point a telescope toward the Sun!). Once you have a tree or mountain peak in the center of the main scope's image, you can then adjust the screws around the finder scope to get the crosshairs (or red dot) centered on the same object. It is very difficult to do this job in the dark, especially as objects in the sky are constantly on the move.

You will find that there is a very wide range of movement in the focus mechanism, because different eyepieces focus at different points, but the actual focus range for any eyepiece will be a small part of the overall range afforded by the focusing mount. It is much easier to familiarise yourself with this in daylight.

At this point you will learn that astronomical telescopes usually show an upside down image. There is a good reason for this- erecting the image needs more bits of glass in the light path, which reduces the amount of light and increases aberrations. Even if this is only slight, astronomers prefer to avoid it, and they don't really care which way up the Moon or Jupiter appear. It is possible to fit an erecting prism or eyepiece to most astronomical telescopes, and some of them come with one, but one wouldn't bother to do this with the small finder scope.

Once you have done the above, you can try the scope at night, on an easy to find bright object like the Moon. Looking at random stars will probably be disappointing, as they don't look different under magnification. You will have to find planets, star clusters or nebula to see anything interesting. You will also find the the object you are looking at swims out of the viewing field, and you must continually move the scope to follow it. This will be more pronounced at higher magnifications. This scope has a motor to track the scope and keep objects in view, but you will have to get the scope set up for that for it to work correctly. Again, use the least powerful eyepiece to start. Small scopes are often advertised as having unrealistic powers (300, 500) which can never be practically achieved. You just get dim blurs.

There is an excellent website for beginner telescope users at THIS LINK

Jan 22, 2011 | Konusmotor 500 (230 x 114mm) Telescope

1 Answer

I assembled it without a manual because i cant find one, and i cant seem to work it everything looks good but with the lense i cant quite seem to work it, ...


Put the eyepiece with the largest number written on it into the focuser. DO NOT use the 2x barlow if you have one.

Go outside during the day time and practice focusing on a distant object using the eyepiece mentioned above.

Line up the small finder scope with the main tube-- point the scope at the top of a distant telephone pole or church steeple.

Without moving the scope, line up the cross-hairs in the finder scope with the same object. Once this is lined up you can use the small finder scope to locate objects in the sky.

Read my TIPS on my profile page.

Jul 14, 2010 | Citiwell International Orbitor 5500...

1 Answer

78-6114 Telescope for my kids and I think everything is put together correctly. Lol. But when I try to view anything I shows nothing and yes I did remove the small cover at the end of the scope. Thanks!


Put the eyepiece with the largest number written on it into the telescope. Practice focusing on a distant object during the day time,. Also line-up the small finder scope with the main telescope.

The moon should be your first target at night.

You can download a free monthly star chart here:
www.skymaps.com

Read my TIPs on my profile page.

Jul 07, 2010 | Optics

2 Answers

I have a redfield 3x9 rifle scope and looking for tips on sightin


Yes thats about all there is to it, adjust in small steps and tap on the barrel of the scope with a screw driver handle (light taps) after each adjustment before firing the gun.

Nov 14, 2009 | Redfield See Thru Rifle Scope Mount Base...

2 Answers

Edu science reflector telescope instructions 600x


This is a small refractor telescope-- they pretty much all work the same-- BUT don't expect to get more than 100 power out of the scope. Yes I know the box said 600 power but it's a lie. In my 8 inch telescope I rarely get above 250 power and my scope is many times larger than the one you have--

Now put the eyepiece with the largest number written on it into the telescope-- the LARGER the number the LOWER the magnification. During the day time practice focusing on a distant object --- AND line-up the small finder scope on top with the main telescope tube. Look at the top of a distant light or church steple, or telephone pole. Without moving the telescope adjust the small finder scope by loosening and tightening the screws around the tube holding the finder scope-- put the crosshairs on the same spot as the main telescope.

Now you can use the small finder to locate objects in the sky-- the moon should be your first night time target.

Mar 17, 2009 | Edu-Science Optics

2 Answers

Hi i have an optus telescope when i find a star in my view find or the spacestation orbitating the earth i find it in my view find and when i look through the lens on the scope i see notting and i have...


Your finder is not aligned with your telescope. During the day time focus on a distant small object with the telescope-- then without moving the telescope adjust the crosshairs in the finder to match the telescope.

Dec 27, 2008 | Optics

1 Answer

Hardin Optical Deep Space Hunter model DSH-6


Hi,
your telescope appears to be a newtonian reflector on a dobsonian mount. This type of scope is basically a point and shoot design, simplicity itself and many experienced astronomers swear by them, for there ease of use, set-up time etc.
The number 6 in the model number denotes the aperture (size of mirror) in inches. This is a good starter scope (much better than these small scopes that boast 525 X magnification) and with it tou will be able to clearly see Jupiters four main moons and the planets cloud belts. You will be able to see Saturn and it's ring system. Many nebulae, star clusters etc will become visable, that were invisible before.
Getting started with this kind of scope is pretty easy even for an absolute beginner. Set up the scope on a flat even surface, putting it all together should be self-explanatory. Insert the lowest power eyepiece (Usually the one with the biggest lens, and the one with the biggest number i.e. 40mm) and begin by pointing the open end of the scope at a bright object in the sky. To get you going with a bit of a buzz, I suggest Jupiter. Jupiter rises in the SE at 20.50, and is due South at around half past midnight, Look for a bright star that doesn’t twinkle to the right of the moon at about midnight, and that’s Jupiter!
Whilst looking through the eyepiece, carefully move the scope back and forth, up and down in the general direction of the planet. Remember, you are only looking at a very small part of the sky, probably about the size of a full moon.
It is unlikely your scope will be in focus at this stage so what you will find will probably look like a doughnut. When you find this “doughnut” you will need to focus. Adjust the focus knob until you see a crisp image of a small disk. If you are in Europe, you will see three bright moons (two on one side and one on the other) the fourth is hard to see tonight, but if you are lucky, you may glimpse a view of the shadow of this moon (Europa) as it crosses the disk. On the East coast of the US, you will also see three moons clearly, the fourth, Ganymede. Is still in Jupiter’s shadow at half past midnight, but by 1pm, it will become visible as it moves out of the shadow.
Keep looking for Ganymede during this half hour, it makes interesting viewing, and gives a sense of realism and motion to the whole event.
Try using different eyepieces as you become more accustomed to your scope, everything you see is upside down and back to front. Using different eyepieces will require re-focusing, but with a bit of practice, it will become second nature.
Finally, adjusting your finder scope. You will notice that the finder is held in place with two (sometimes three) adjustable screws. It may be best to set the finder scope up in the daytime. First find a distant object in the main scope (the further the better) a chimney pot on a distant roof etc. Then using the adjusting screws, centre the same object in the finder. It’s a bit fiddly at first, but you will get the hang of it. Then when night time comes, finding celestial objects is much easier. First locate the object in the finder scope, centre it, and the object should be in view in the main scope.
Hope this helps to get you going.

Kind Regards….Dave

Jul 16, 2008 | Hardin Optical Deep Space Hunter 6 (240 x...

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