Question about Bushnell Voyager 78-9570 (570 x 60mm) Telescope

1 Answer

T-18 erecting lens receptor inside diagram - Bushnell Voyager 78-9570 (570 x 60mm) Telescope

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 3,186 Answers

Only Bushnell will have this part. Contact them here:

http://www.opticsplanet.net/bushnell-warranty.html

Posted on Apr 04, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My telescope is showing upside down


All astro telescopes will normally show an inverted image. If you want to use it during the daytime you can fit an erecting prism between the lens and the focuser, like this

https://www.optcorp.com/os-d125ei45-45-erect-image-diagonal-1-25inch.html
.

Jul 30, 2016 | Bushnell NorthStar 78-8846 (675 x 114mm)...

1 Answer

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.

Mar 23, 2015 | Tasco Optics

1 Answer

I put the 1.5 erecting lens in, however, I am getting a tilted veiw not an upside down one without it How do I get the veiw totally upright?


Turn the diagonal, and the image rotates. Using the scope for star gazing it does not matter. Normally an astronomical telescope shows an upside down image--- no up or down in space. The erecting prism is only used for terrestrial viewing as the prisms inside are probably NOT multi-coated.

Sep 28, 2010 | Bushnell 3" Reflector Telescope w/Talking...

1 Answer

Problems with the ercecting lens


Did you put the eyepiece into the diagonal? ------- after you put the diagonal into the telescope. Erecting lens is a DIAGONAL by the way. "erecting diagonal"

Jun 14, 2009 | Bushnell Voyager 78-9440 (440 x 12.5mm)...

1 Answer

Upside down images


ALL astronomical telescopes show upside down images it is normal. Put the eyepiece with the LARGEST number written on it into the diagonal. Do NOT use the 2x barlow it is too much magnification for that small aperture telescope.



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

Jan 05, 2008 | Bushnell Voyager 78-9440 (440 x 12.5mm)...

1 Answer

What lens do i insert into scope to view the moon


The moon is big so use the 25mm. The Barlow will have a multiplication marking on it 2x 3x etc. A 2x Barlow lens will effectively double the power of the eyepiece you are using. Do not use the erecting eyepiece for anything other than land viewing. Erecting eyepieces generally reduce the amount of light reaching your eye and thus reduce brightness of the faint objects in the sky.
So basically just place the 25 mm lens in the focuser and point the scope at the moon and you will be amazed at what you can see and how bright it is.

Dec 30, 2007 | Tasco 350x50mm Refractor Novice Telescopes

1 Answer

Garage sale purchase


This is a small telescope.You will get limited views with this scope.However you will be able to see the craters on the moon and the rings of saturn.Although they will not have any detail.You will be able to use it as a terestrial scope.For that it is ideal.You will need an erecting lens to turn the view right side up.You need atleast 1 eyepiece,finderscope,erecting lens(for terestrial views)and maybe a barlow lens.Keep in mind it is not magnification you are looking for it is the ability to gather light and a 50mm is not going to gather much.the bigger the objective lens the more light it will gather.Think of animals that come out at night,their eyes are bigger than those that are out in day light.Because the bigger the lens the more light it gathers,so magnification only plays a part if you can see the target with your light gathering ability.Because just like 1000x0 is 0 the same gos for telescopes.1000xblack is black..

Sep 02, 2007 | Bushnell Voyager 78-9440 (440 x 12.5mm)...

Not finding what you are looking for?
Bushnell Voyager 78-9570 (570 x 60mm) Telescope Logo

Related Topics:

146 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bushnell Optics Experts

Joe Lalumia aka...
Joe Lalumia aka...

Level 3 Expert

3186 Answers

kakima

Level 3 Expert

102366 Answers

Mark Campeau

Level 1 Expert

44 Answers

Are you a Bushnell Optic Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...