Question about Bushnell NorthStar 78-8846 (675 x 114mm) Telescope

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Hi The cable that connects the Mount to the hand held control of my telescope is too short. Do you get an extension and where can I buy it

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You can probably make one if you knew the "pin" connections- contact Bushnell for help at this web site:

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

Posted on Oct 15, 2010

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I have connected the hand held remote control to me Celestron NexStar 80GTL and nothing happens. The remote will not power up. Don't know if the problem lies with the remote or is a more major...


Are the batteries fresh? You can also try a new hand controller cable maybe the one you have is broken which is a common problem.

Beyond that you can try to borrow another hand controller and try it. If none of these work, then you have a blown circuit inside the telescope. It will need to be returned to Celestron for repairs.

May 27, 2011 | Celestron NexStar 4 SE Telescope

Tip

So you want to buy a telescope and do ASTRO-PHOTOGRAPHY!


STOP! What are you thinking!

Beginners should never attempt to do astro-photography with their first telescope. Kind of harsh? You bet it is! Stay any from this part of the amateur Astronomy hobby until you have used your first telescope for over ONE YEAR or longer!

You say you really want to do this? OK, get ready to spend big bucks. This area of the Astronomy hobby can get very expensive, and time consuming.

You will need:

A good equatorial mount that tracks the sky very precisely, or the stars in the picture will NOT be round- about $700-$1200.

You should buy a wide field refractor of about 80mm as your first imaging scope. The scope needs to be F6 or faster- about $600-$800.

You will also need a .5 focal reducer about $100.

You will need a camera- about $1000 dollars and higher!

You will need assorted filters and power supplies, and cases to hold all this stuff, and a laptop; say about another $800-$1200.

See how fast the money adds up! You can do short exposures and stack the images somewhat cheaper. However, you still need a camera like a Canon Rebel, and assorted parts to connect it to the telescope. PhotoShop is software most imagers use to manipulate the images they take. The software is $300- $600.

Have I discouraged you yet? I hope I have! Don't try it unless you have money to burn.

Read this article start to finish to learn more about taking pictures with your telescope. The article is LONG and complex, just like astro-photography!
http://cs.astronomy.com/asycs/forums/p/19319/354755.aspx

On second thought just forget the entire "photo" thing and buy a nice 8 inch Dobsonian reflector with a computer hand controller- about $700. You will be able to SEE visually thousands of sky objects, and the computer hand controller will help you find them! AND-- you can buy a small device that attaches to the eyepiece for about $39 and mount your small digital camera. This will permit you to take very short exposures of the brighter sky objects like the moon and the planets.

Come back about a year after you buy your first telescope and read this article again!

Clear Skies!
Joe Lalumia




on Dec 29, 2009 | Optics

Tip

Buying your first telescope


So you got the Astronomy bug or a young child and you want to buy a telescope. Here are some suggestions:

1. Never buy a telescope from Wal Mart or CostCo, or Ebay unless you know EXACTLY what you are buying. Most of the scopes on Craigslist.com are also junk or toy telescopes. (I have bought two telescopes from craigslist.com; BUT I knew exactly what I was buying!)

2. Do NOT buy an equatorial mounted scope as your first telescope. You must polar align the scope to use it, and most cheap low cost EQ mounts are shaky and not actually built to support the telescope. Can you find Polaris, and point the EQ mount toward Polaris? Unless you polar align an EQ mounted telescope, it cannot be used!

3. Locate a local Astronomy club and attend their meetings and star parties. You will get to look through the member's telescopes and ask questions. Do this BEFORE you buy your first telescope.

4. Usually we recommend a small Dobsonian mounted reflector as your first telescope. See this web site: http://www.telescope.com/control/dobsonians/classic-dobsonian-telescopes Try to buy one that is at least 6 inches in aperture. An 8 inch Dobsonian would make a great beginner telescope! The 4.5 inch makes a good child's telescope.

These are easy to use and POINT at objects in the sky, and you get the largest aperture for the least amount of money.

5. Buy several Astronomy books. For example, "Turn Left at Orion", and "Nightwatch". Read these before you spend your money. Also download a free monthly star chart at www.skymaps.com You can also subscribe to Astronomy magazine, or Sky & Telescope magazine.

6. NEVER buy a telescope that advertises MAGNIFICATION. This is the least important quality of a telescope, which is made to gather the light from dim and small sky objects. 575 power magnification written on the outside of the box is a LIE! Also, the pretty pictures on the box were taken by the Hubble Space Telescope! You will NOT see color in that 70mm telescope you are planning to buy.

7. The MOUNT is just as important as the actual telescope. A cheap department store toy telescope on a shaky mount will frustrate the beginner. You CANNOT buy a usable telescope for less than about $200. Sorry but that's just the way it happens to be!

8. A nice pair of either 7x50mm or 10x50mm binoculars should be considered as your first TELESCOPE purchase, along with a Star Chart. Learning your way around the sky is a big part of the hobby. A pair of 10x50mm binoculars is almost the same aperture as that 60mm telescope you are thinking about buying! The binoculars have a wider field of view which will help beginners SEE and LOCATE more sky objects.

7. The Astronomical League has a list, by State, of Astronomy Clubs on their web site:
http://www.astroleague.org/societies/list Join a local Astronomy club!

Again, DO NOT buy a telescope until you learn a little bit about the different types of scopes (Refractor vs Reflector) and their strong and weak points for each scope design.

Here are example of scopes NOT TO BUY!

http://www.walmart.com/catalog/product.do?product_id=12538000 EQ shaky mount

http://www.walmart.com/catalog/product.do?product_id=8402684 Cheap GOTO computer scope- plastic gears

http://www.opticsplanet.net/meade-114eq-ast-model-45-f-88-equatorial-telescope-04056.html another shaky EQ mount

http://www.opticsplanet.net/tasco-50x50-telescope-and-microscope-combo-red-49tn.html I don't know about the microscope, but the telescope has the same aperture as a pair of binoculars!

http://www.opticsplanet.net/tasco-novice-402x60mm-refractor-telescope-30060402.html You might be able to see the moon and a few of the planets but with 60mm of aperture it's just too small and the mount is very shaky

Read this web site to learn about the different types of telescope designs.
http://www.texasastro.org/telescope.php

If you are buying a telescope for a child buy a 4.5 inch or 6 inch Dobsonian. If the scope is for YOU, then buy an 8 inch or 10 inch Dobsonian. Like one of these:
http://www.telescope.com/control/dobsonians/classic-dobsonian-telescopes

Or one with a computer hand controller like these:
http://www.telescope.com/control/dobsonians/intelliscope-dobsonian-telescopes

AND WATCH this video- the $800 telescope-- you will learn a lot about telescopes by listening to Andy talk about telescopes.
http://www.andysshotglass.com/800Dollar.html

Notice how much stronger the equatorial mounts appear on this video, and his final recommendation of a Dobsonian reflector as a good beginner's scope in the largest size (aperture) you can afford. Remember-- objects in the sky are VERY small. Your scope and it's finder scope must be lined up exactly pointed at the same spot in the sky; or you will not see anything!

I cannot emphasize this point enough! Telescopes have very small fields of view, no bigger than the tip of your finger held at arm's length!

Here is a free monthly star chart that you can download every month:
www.skymaps.com

Clear Skies!
TelescopeMan

RSS Link to all of TelescopeMan's Audio & Video Astronomy Podcasts

on Dec 01, 2009 | Optics

1 Answer

CG5 is brand new-not 30days old yet. Mount slews before a star is selected for alignment and continues to slew about the RA until power is cut. What is wrong. Tried 2 different power sources and factory...


You should return the scope under warranty-- however a bad power supply-- and or a bad hand controller cable can cause these symptoms called a "runaway slew".

Get a separate 12 volt power supply and the proper cigarette lighter style power plug.

Feb 12, 2011 | Celestron CG-5 Mount Telescope

1 Answer

Electronics - Atas EQ-G - connection is lost when guiding program begins calibration. Tracking and mount control lock up requiring restart of mount. Thanks


Have you upgraded the motor control firmware and the hand controller firmware to the latest version? If not see this web site which contains instructions for updating the firmware.

http://www.telescope.com/control/accessories/mounts-and-tripods/orion-atlas-eq-g-computerized-goto-telescope-mount

This could also be caused by a USB-Serial adapter cable. Try another brand. The one sold by www.scopestuff.com works --- along with a Keyspan brand Serial-USB adapter.

Oct 10, 2010 | Orion Atlas 8 EQ-G Telescope

1 Answer

No power hand held no light on display


Make sure the batteries are good. The cable to the hand controller may be bad. You can get another cable from either Celestron or a local dealer.

If a new cable does not fix it, then either the hand controller is defective, or something on the internal circuit board. It must be returned to Celestron for this type of repair.

Jan 18, 2010 | Celestron NexStar 130 SLT (306 x 130mm)...

1 Answer

The hand held unit lights up when turned on, and the telescope "homes" but the LED does not show anything. The voice speaks "Bushnell Northstar" but very quietly. The telescope can be moved by the bottom 4...


Can you reverse the cable end to the hand controller-- a bad cable can cause this. Also low power supply, depleted batteries can also cause this.

Return the hand controller for replacement if batteries and or a new cable do not fix this.

Dec 24, 2009 | Bushnell NorthStar 78-8846 (675 x 114mm)...

2 Answers

The hand controller circuit board burnt out on my Orion telescope


Call Orion customer service.
http://www.telescope.com/control/main/

Jul 13, 2009 | Orion (05374) Telescope

1 Answer

Power problem on lx200gps telescope


If it's an electronic problem --- there are several folks on the Yahoo LX200 Group that can repair the board-- go there and ask for "RON"---

You should be using a stable 12 volt power source. The only other thing to check are

Get a temporary replacement for the hand controller and see if that works-- and-or get a low cost replacement hand controller cable from www.scopestuff.com and try the old controller with a new cable --- usually one of the capacitors is fried.

Jun 02, 2009 | Meade 10" LX200GPS Schmidt-Cassegrain...

2 Answers

ETX-125 Autostar controller not working


I assume the small red light on the power panel is ON. ???

If it is the scope is receiving power--- check to make sure the cable from the hand controller is plugged in properly-- jiggle the cable to see if you have a loose BAD cable. Before you panic --- try another cable or reverse the ends ---

Before you buy another hand controller try a new cable-- scopestuff.com sells a nice long flexible one for the 497 hand controller.


Jan 14, 2009 | Meade ETX-125EC (500 x 127mm) Telescope

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