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How many inches is 1200mm - Office Equipment & Supplies

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I inch = 25.4 mm

So 1200/25.4 = 47.24 inches

Posted on Mar 23, 2011

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Millimeters x 0.03937 = inches
answer is 1200 X 0.03937 = 472.44 inches (or just about 44 and 1/2 inch

Posted on Mar 23, 2011

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How the specifications of telescopes is read


First you would look at the construction, a reflector or a refractor.



The first has at least 2 mirrors in it, and comes in several sub-types. The cheapest to begin with is a Newtonian, very cost effective. You can recognise these as having the eyepiece at the front end of the tube.



http://www.365astronomy.com/images/10237-skywatcher-quattro-12s-imaging-newtonian-telescope.jpg



Newtonians however have to be optically aligned (collimated) every so often to give a sharp image. This is simple enough when you learn how, but some find it a pain.



Refractors have no mirrors, only lenses, and you can recognise these as having the eyepiece at the rear of a longish tube. They don\'t need regular collimation. The better ones have more lenses in them, and in larger sizes are very expensive.



http://www.astronomyalive.com.au/media/catalog/product/cache/1/image/5e06319eda06f020e43594a9c230972d/7/0/709eq.jpg



The next spec you see is the aperture, or diameter of the optics. It is the diameter of the main mirror or lens, and governs the light gathering power of the scope. If you live in the city, there is no point to having a huge scope, as it only gathers lots of light pollution. If away from towns, a large scope will pick up faint nebula. 100 - 150mm (4"-6") is a good starter size.



Then you see the focal length (FL) quoted. This is the length of the light path in the scope. In a reflector it is folded up, and can be quite long without having a bulky tube (OTA). In a refractor it is straight, and so is limited in amateur scopes to about 1200mm.



The focal length governs the magnification you see, but only in partnership with the eyepiece (EP). These are interchangeable



http://www.atozastro.com/my_equip/eye_pieces_set.jpg



and each has its own focal length. The magnification is the scope FL divided by the EP FL. So a 1200mm FL scope with a 25mm EP gives a magnification of x48, which does not sound much, but is good for a sweeping view of the Milky Way. EPS range down to 4mm commonly, so there is wide choice.



There is not space here to discuss the mounts, but start with a robust AltAzimuth (AZ), say a Skywatcher AZ4. Another popular mount is the Dobsonian, confined to Newtonian reflectors.



I\'d urge you not to get a cheap department store scope. These are absolute junk with plastic lenses and poor construction. Depending on budget, get an affordable refractor first up, (so you don\'t have to fiddle with it much) with some Plossl type EPs (cost effective) like a



http://www.optcorp.com/celestron-astromaster-90-az-refractor-telescope-21063.html

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1 Answer

Can you restore a Lumix DMC-FZ70 back to factory settings


Yes, the reset instructions can be found in the below link.

http://service.us.panasonic.com/OPERMANPDF/DMCFZ70_ADV.PDF#page=70

Apr 19, 2014 | Panasonic Lumix DMC-FZ70 16 Megapixel...

1 Answer

Error


This is an odd problem if you're using a standard lens. I've been told that it's called photo chromatic aberration and it's a fairly common problem with inexpensive big (600-1200mm) telephoto lenses.

If it's happening with a good quality standard lens this suggests that there may be a problem with the autofocus not being quite set when you take the first shot then being fully adjusted by the time you take the second shot.

I'd suggest contacting Nikon support at www.nikon.com to see what they suggest. Be sure to provide them with information about what kind of lens you are using and what the light conditions are.

Jun 25, 2013 | Nikon D100 Digital Camera

1 Answer

Qasair CM900 Rangehood Motor not working properly


I have a twin motor Qasair Heritage 1200mm wide canopy and recently noticed (after 8 years of great service) that one of the motors was having a difficult time getting to high speed compared to the other. Turns out that it is indeed a faulty capacitor. I had the service tech out from Condari, and both capacitors replaced, restoring the high speed function to both fans. Call out fee was $99, each capacitor $15 and labour amounted to $25 for a grand total of $154. Very happy to hear the full force of the fans again! Here is a picture of the old capacitor, which is housed inside the metal box on the side of the fan unit.
qasair-cm900-rangehood-motor-not-working-jh3mtdyhsbuajkonnzlnhwkf-4-0.jpg

May 20, 2012 | Kitchen Ranges

1 Answer

How high up a wall do i hang a thermostat


It should say in the instuctions but i set them at 1500mm high which is the normal recomended height, although 17th edition says all switches should be 1200mm high (new build), the manufacturers recomendation should be followed.

Jan 26, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

Tengo un telescopio tasco antiguo d=76.2mm f=1200mm numero 570290 y necesito coseguir algunos repuestos a quien puedo contactar


Algunas piezas se pueden comprar en los distribuidores telescopio, mientras que otros s?lo est?n disponibles a partir de Tasco.

Tasco web site:
http://www.tasco.com/pages/repair-and-warranty/

Jul 15, 2011 | Tasco Astronomical Refractor Telescope

1 Answer

I have an old Tasco Telescope #271808 with a Barlow Lens 2x magnification D=76.2mm f-1200mm and are looking for instructions on how to work it. If anyone could help that would be wonderful.


This is a small refractor style telescope--- most iof them assemble exactly alike. Look through the Meade manual page for one that is similar to yours and download it for free.

http://www.meade.com/manuals/index.html

Yours is similar to this one--
http://www.meade.com/manuals/TelescopeManuals/Refractors/Meade70AZ_AR.pdf

Jun 15, 2009 | Tasco Optics

1 Answer

Purchase Zoom Lenses


Canon currently makes super Telephoto lenses from 300mm to 800mm and a number of zoom Telephoto lenses from 28-300 to 100-400. You can also special order a 1200mm lens from Canon at a cost of $99k! (There are only about 20 such lenses made so far.)

You can also get a 1.4 or 2x teleconverter to further increase the power of a telephoto lens. However, the cameras are unable to auto-focus when the minimum f-stop exceeds f/8, which can happen when you use one (or both) of the teleconverters on these longer lenses, so you have to manually focus the lens.

You can also get telephoto lenses from other manufacturers such as Tamron and Sigma that are built to work with Canon cameras. However, the Canon lenses are generally regarded as the best quality.

Dec 21, 2008 | Nikon D70s Digital Camera

1 Answer

I require a replacement manual for my De Dietrich CX4744U1 duel fuel range cooker.


Here are some links that I have found to be helpful. Good Luck!
http://www.retrevo.com/samples/Microwave-manuals.html?cmpid=Manuals_Microwave&gclid=CPO8ouufvZMCFRUWsgodIg3EDA

http://www.managemyhome.com/mmh/products/ManualSearchDisplay.action?psid=31378668&sid=MMHSx20070515x00001a


If my assistance helped resolve this issue, please show your appreciation by rating how effective my advice was in resolving this issue.
Thank you,
Dave E. (Illeagle)

"Your satisfaction is my personal reward"

Jul 05, 2008 | Kitchen Ranges

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