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Posts Tagged ‘atm’

Telescope Mirror

May 16th, 2010 admin No comments

Telescope Mirror
Perhaps a mirror telescope primary practices as a mirror reflecting?

I can not find a vendor scope property or an optical shop in our place that sells customizable mirror. I plan to buy a mirror and use it as a primary mirror reflecting a range of. I heard that the focal length can be short. How short is the average length of a center mirror lens? Is it too short to be used in a telescope or passable as a mirror scope of medium quality? I have not bought one and measured.

When you say "magnifying mirror," what comes to mind is a mirror to shave or may be used as an overhead mirror. These mirrors are extremely poor optical quality. For astronomy, you must have a precision ground mirror. If you do not find a used one cheap so it is best to grind yourself. Here are some links to the telescope construction do-it-yourself and mirror grinding.

telescope mirror grinding

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20 inch Parabolic Dobsonian Telescope Primary Mirror


20 inch Parabolic Dobsonian Telescope Primary Mirror


£1,632.80


2


2″ pushfit Premium Dielectric telescope Mirror Diagonal


£73.99


TELESCOPE DIAGONAL 1.25 '' STAR MIRROR FULL MULTICOATED


TELESCOPE DIAGONAL 1.25 ” STAR MIRROR FULL MULTICOATED


£21.53


TELESCOPE 2


TELESCOPE 2″ MIRROR DIAGONAL WITH 1.25″ ADAPTER


£32.64


Tasco Telescope 302003 Rear Mirror


Tasco Telescope 302003 Rear Mirror


£4.99


Tasco Telescope 302003 Mirror


Tasco Telescope 302003 Mirror


£4.99


Deluxe Laser Collimator to align your Telescope Mirrors


Deluxe Laser Collimator to align your Telescope Mirrors


£30.71


TELESCOPE SECONDARY MIRROR 2.7 inch


TELESCOPE SECONDARY MIRROR 2.7 inch


£50.93


TELESCOPE SECONDARY MIRROR 2.3 inch


TELESCOPE SECONDARY MIRROR 2.3 inch


£41.13


TELESCOPE SECONDARY MIRROR 2.3 inch


TELESCOPE SECONDARY MIRROR 2.3 inch


£41.13


Laser & Cheshire Collimator for Telescope Mirrors


Laser & Cheshire Collimator for Telescope Mirrors


£49.00


NEW 2 inch telescope mirror diagonal with 1.25


NEW 2 inch telescope mirror diagonal with 1.25″ adapter


£29.40


Photographic Print of Polishing the mirror of the Hubble Telescope, 1980s. from Heritage-Images


Photographic Print of Polishing the mirror of the Hubble Telescope, 1980s. from Heritage-Images


£10.00


10×8 Print. Printed on Fuji Crystal Archive paper for stable image permanence and brilliant colour reproduction with accurate colour rendition and smooth tones. Enhanced sharpness with excellent definition. Paper size approx 254×203mm…

Photographic Print of Sir Winston Churchill from Mirror Photos


Photographic Print of Sir Winston Churchill from Mirror Photos


£8.99


10×8 Print. Printed on 254×203mm Fuji Crystal Archive paper for stable image permanence and brilliant colour reproduction with smooth tones, enhanced sharpness, and excellent definition….

Photographic Print of Will Hay from Mirror Photos


Photographic Print of Will Hay from Mirror Photos


£8.99


10×8 Print. Printed on 254×203mm Fuji Crystal Archive paper for stable image permanence and brilliant colour reproduction with smooth tones, enhanced sharpness, and excellent definition….

Deluxe Reflector Telescope Hi Precision 114 x 1000 4.5 inch mirror


Deluxe Reflector Telescope Hi Precision 114 x 1000 4.5 inch mirror


£149.97


This advanced reflector telescope provides an excellent view on planets, the milky way and other phenomenons by night.
Including aluminium tripod….

Flip Mirror System #647 UHTC 2


Flip Mirror System #647 UHTC 2


£218.98


Flip the mirror down to center an an image while viewing with an eyepiece at 90º, or… Flip the mirror up to pass light to the CCD chip or film plane of a 35mm camera. Includes 2″ eyepiece-holder and 1.25″ eyepiece adapter permitting use of either 1.25″…

Flip Mirror System #644 UHTC 1.25


Flip Mirror System #644 UHTC 1.25


£129.99


Flip the mirror down to center an an image while viewing with an eyepiece at 90º, or… Flip the mirror up to pass light to the CCD chip or film plane of a 35mm camera….

Astronomical Telescope with Diagonal Mirror and Tripod


Astronomical Telescope with Diagonal Mirror and Tripod


£24.97


Astronomical Telescope with Diagonal Mirror and Tripod…

Toyrific Toy Telescope with Mirror and Tripod


Toyrific Toy Telescope with Mirror and Tripod


£14.99



Telescope Mount

October 15th, 2009 admin No comments

Telescope Mount

Best Telescopes To Buy

Buying a telescope can sometimes seem a pretty complex and involved process. There are so many aspects to consider: do you want a refracting or reflecting? What sort of magnification? Coated optics or multi-coated? Focal length specs? If you’re like most, you just want a middle-of-the-road quality telescope with a proven track record. Below, we’ve listed four of our favorite telescopes by optical industry legends, as well as basic tips on buying; to help you find just the right one for your home and family.

The Bushnell Voyager comes in reflector, refractor, and compact models, and is by far one of the best high-quality, high technology telescope brands in the optical industry. The reflector models offer resolute magnification, light-gathering technologies, 5mm and 27mm eyepieces, camera-adapting functions, and typically come with a carrying strap as they are the predominantly and conveniently portable model. The refracting Bushnell Voyager is a bit more expensive and less portable, but delivers better overall image quality; depending on your intended uses. The refractor models boasts about 5 times the magnification power, as well as light capabilities. They are also camera adaptable, have a finderscope, and zoom eyepieces. Either is an excellent choice, if you are looking for an affordable, quality telescope for casual but educational stargazing.

Galileo also offers top-quality, high performance telescopes; in reflecting and refracting models. The reflector boasts premium optics, powerful magnification, easy to navigate azimuth mounts, finderscopes, zoom eyepieces, and even easy-to-understand video tutorials. The refracting models also offer superior optical capabilities, finderscopes, zoom eyepieces, and azimuth mounts; plus 8 times the magnification and light-gathering technologies, interchangeable eyepieces, flip Barlow lenses, and interactive tutorials; again for a small price variance.

Two good choices are from Tasco: the Galaxsee Refractor or the Luminova Refractor or Reflector telescopes. The Galaxsee Refractor has an optimum magnification of 675, high light-gathering capabilities from a 60mm aperture, wide field of view, and equatorial mount for easy star tracking. Along with top quality resolution and accurate detail technology, the Galaxsee also boasts three premium eyepieces, red dot finderscope, and Barlow Lens. The Luminova Reflector and Refractor by Tasco both offer superior optics, powerful 675 magnification, 4.5mm or 60mm objective lens, wide field of view, multi-magnification eyepieces, slow-motion controls, adept finderscopes, and equatorial mounts for easy navigation and viewing.

Things To Keep In Mind
· Reflecting telescopes are slightly more cost-efficient than the more common refracting telescopes; but refracting telescopes typically boast way better optical accuracy and light-gathering technology.
· Higher-powered magnification is not always better, if it is not balanced with a larger objective lens or aperture. The higher the magnification, the more detailed, but also the more dark and obscured.
· The higher the focal length, the higher the magnification, and the narrower the field of view.
· The larger the aperture or objective lens, the more light will be allowed and the higher the resolution (accurate details).
· If the telescope of your choice doesn’t come with a book or video tutorial; make sure to invest in one. It greatly helps while searching the skies for stars, planets, and constellations; to be able to name them.

About the Author

Opticsale.com offers a wide selection of discount top-quality
telescopes
and accessories.

A Harmonic Geared Telescope Mount Moving b

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Doumount for parallel use of 2 telescopes on one Mount


Doumount for parallel use of 2 telescopes on one Mount


£132.99


SKYWATCHER EXPLORER 130P EQ2 mount Telescope (712)


SKYWATCHER EXPLORER 130P EQ2 mount Telescope (712)


£175.00


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


Telescope fixed pier mount base HEAVY DUTY


Telescope fixed pier mount base HEAVY DUTY


£149.99


telescope helios reflector scope on eq2 mount 1.25


telescope helios reflector scope on eq2 mount 1.25


£75.00


TELESCOPE SKYWATCHER 130P PLUS EQ2 MOUNT


TELESCOPE SKYWATCHER 130P PLUS EQ2 MOUNT


£105.00


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


VIXEN SPHINX SXW TELESCOPE MOUNT & EXTRAS


VIXEN SPHINX SXW TELESCOPE MOUNT & EXTRAS


£99.00


STAR PARTY POWER-DISTRIBUTION-DRY-BOX-MOUNT-TELESCOPE


STAR PARTY POWER-DISTRIBUTION-DRY-BOX-MOUNT-TELESCOPE


£19.99


SKYWATCHER EVOSTAR 150 EQ5 mount Telescope (925/464)


SKYWATCHER EVOSTAR 150 EQ5 mount Telescope (925/464)


£689.00


Skywatcher HEQ5 Pro Synscan telescope mount


Skywatcher HEQ5 Pro Synscan telescope mount


£77.00


Celestron C8 SGT XLT GOTO Telescope + CG-5 GT EQ Mount


Celestron C8 SGT XLT GOTO Telescope + CG-5 GT EQ Mount


£850.00


Professional observatory telescope mount for 40


Professional observatory telescope mount for 40″


£19,601.44


Doumount for parallel use of 2 telescopes on one Mount


Doumount for parallel use of 2 telescopes on one Mount


£132.99


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


NEW ASTROTRAC TT320X-AG TELESCOPE MOUNT WITH POLARSCOPE


NEW ASTROTRAC TT320X-AG TELESCOPE MOUNT WITH POLARSCOPE


£424.00


Doumount for parallel use of 2 telescopes on one Mount


Doumount for parallel use of 2 telescopes on one Mount


£132.99


SKYWATCHER SKYMAX 150 Pro Telescope EQ5 Mount (885/464)


SKYWATCHER SKYMAX 150 Pro Telescope EQ5 Mount (885/464)


£599.00


T2 T Mount Telescope Camera Lens Adapter for Canon EOS


T2 T Mount Telescope Camera Lens Adapter for Canon EOS


£6.49


SKYWATCHER EXPLORER 200P Telescope EQ5 mount (923/464)


SKYWATCHER EXPLORER 200P Telescope EQ5 mount (923/464)


£379.00


Astronomical Telescope Equatorial Mount 75mm OG Fuller


Astronomical Telescope Equatorial Mount 75mm OG Fuller


£450.00


Celestron Skyscout 90 telescope with 2 eyepieces +mount


Celestron Skyscout 90 telescope with 2 eyepieces +mount


£175.00


C/CS -Mount adapter 1 1/4


C/CS -Mount adapter 1 1/4″ For CCTV cameras Telescopes


£13.95


T-Mount Cap (M42x0.75mm Thread)  Telescope/Cameras etc


T-Mount Cap (M42×0.75mm Thread) Telescope/Cameras etc


£2.95


TELESCOPE VIXEN PORTA MOUNT REG. $299 SALE PRICE $225


TELESCOPE VIXEN PORTA MOUNT REG. $299 SALE PRICE $225


£147.01


iOptron Minitower GoTo altazimuth telescope mount


iOptron Minitower GoTo altazimuth telescope mount


£749.00


Telescope Goto Control USB RS232/Serial -Mount-cable


Telescope Goto Control USB RS232/Serial -Mount-cable


£9.99


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


Doumount for parallel use of 2 telescopes on one Mount


Doumount for parallel use of 2 telescopes on one Mount


£132.99


RDF, TMB, ED, Phenix, Telescope, Eyepiece T mount Photo


RDF, TMB, ED, Phenix, Telescope, Eyepiece T mount Photo


£0.99


Doumount for parallel use of 2 telescopes on one Mount


Doumount for parallel use of 2 telescopes on one Mount


£132.99


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


SKYWATCHER EQ5 Deluxe equatorial telescope mount (464)


SKYWATCHER EQ5 Deluxe equatorial telescope mount (464)


£225.00


Telescope Reflector,StarScope TS 114/900 better mount


Telescope Reflector,StarScope TS 114/900 better mount


£119.99


Konus Motor 90 Equatorial Telescope


Konus Motor 90 Equatorial Telescope


£174.95


The Konus Motor range offers medium level astronomy at an economical price into this oldest of sciences. The Equatorial mount with R.A. tracking motor is quite stable, for smooth semi automatic tracking of celestial objects.

The Konus Motor 90 refractor telescope features an impressive optical and mechanical quality that achieves great visual performance for astronomical observation.

This tele…


Photographic Print of Pleiades star cluster from Science Photo Library


Photographic Print of Pleiades star cluster from Science Photo Library


£10.00


10×8 Print. Printed on 254×203mm Fuji Crystal Archive paper for stable image permanence and brilliant colour reproduction with smooth tones, enhanced sharpness, and excellent definition….

Photographic Print of False colour image of a solar flare from Skylab, 1973. from Heritage-Images


Photographic Print of False colour image of a solar flare from Skylab, 1973. from Heritage-Images


£10.00


10×8 Print. Printed on Fuji Crystal Archive paper for stable image permanence and brilliant colour reproduction with accurate colour rendition and smooth tones. Enhanced sharpness with excellent definition. Paper size approx 254×203mm…

Celestron 93602 Car Window Mount


Celestron 93602 Car Window Mount


£19.67


Brand New – Ships same day, delivery 2-5 working days. 7 Day Money Back Guarantee. 10th Year online! – PicStop is an established retailer of Camera and Computer Accessories and Hardware….

New !!!!! T -Mount For Nikon DSLR Cameras


New !!!!! T -Mount For Nikon DSLR Cameras


£16.99


This is a T mount adapter that fits on to a Nikon 35mm manual focus DSLR camera.
This adapter fits in to the camera body’s lens mount as a lens would.
Many photo accessories are on the market that have a universal mount to fit them to many different cameras. Items such as microscope and telescope adapters. Lenses of simple design such as a mirror telephoto lens or a fisheye lens and bellows & ext…

New !!!!! T -Mount For Canon AF DSLR Camera


New !!!!! T -Mount For Canon AF DSLR Camera


£16.99


Many photo accessories are on the market that have a universal mount to fit them to many different cameras. Items such as microscope and telescope adapters. Lenses of simple design such as a mirror telephoto lens or a fisheye lens and bellows & extension tubes for macro photography.
Be sure you need this device and it is compatible with the pieces you’re trying to connect together. Be sure the i…

WINDOW MOUNT FOR SPOTTING SCOPE (770)-IDEAL FOR BIRD WATCHERS


WINDOW MOUNT FOR SPOTTING SCOPE (770)-IDEAL FOR BIRD WATCHERS


£12.50


WINDOW MOUNT FOR SPOTTING SCOPE.

Heavy Duty Window Mount, fully adjustable 365° to give panoramic views from the comfort of your car, boat or caravan. Ideal for bird watching, stargazing etc.

It is an optional extra for the High Powered Zoom Spotting Scope 20-60 x 60 -product code (748)…


The Perfect Machine: Building the Palomar Telescope


The Perfect Machine: Building the Palomar Telescope


£10.05



Crayford Focuser

June 16th, 2009 admin No comments

Crayford Focuser
which telescope is best?

among these two telescope which one is best?
a). Orion SkyQuest XT6 Classic Telescope with Bonus Accessory Pack Crayford-Style Focuser
b).Orion SpaceProbe™ 130ST EQ Reflector
what are the good and bad points of those telescope….
what accessories kits do i need for both…
can u suggest me any other nice telescope below 300$
i want to learn astronomy seriously help me!!!!

Orion SkyQuest XT6 Classic:

Pros:
1. It has more aperture than the SpaceProbe 130ST (6″ as opposed
to 5″) and will collect roughly 1.44 times more light.

2. It has a stable, easy to use Dobsonian mount.

3. It can be upgraded with Orion’s Intelliscope navigation system
to help you find things if you want.

Cons: Since it’s a Dobsonian you will not be able to do timed
astrophotography with it. At least not an any easy, cost
effective manner.

Orion SpaceProbe 130ST EQ:

Pros:
1. It has a somewhat stable german equatorial mount which you
may be able to do some degree of times astrophotography
with if you equip it with a motor drive.

2. Even if you don’t equip it with a motor drive you will be able to
do some self guided short exposure astrophotos if you’re
skillful enough.

Cons:
1. It has less aperture than the SkyQuest
2. German equatorial mounts can leave you contorted into odd positions to look through the eyepiece.

Generally, if you don’t plan to be doing astrophotography, I’d say go with the 6″ if it were between these two telescopes. If you do plan to do astrophotography you can get a lot out of a little scope like the SpaceProbe but I’m not sure how stable the mount with this model actually is. It says it’s an EQ2 so it’s probably fairly stable but you may want to eventually get a more solid tripod.

The accessorie pack with the SkQuest consists of a collimator, which is useful, and a right angle finder scope which, in my opinion, isn’t useful unless you can take the right angle attachment off. The reason is, it’s actually alot easier to find things with both eyes open and looking at the sky, though one eye through the finder scope.

Another option is for you to buy a used telescope. For $300 or $400 you may be able to buy a used 8″ with some accessories if you look around on places like

http://www.astromart.com

http://www.cloudynights.com

http://www.astrobuysell.com

Accessories I recommend is at least one good low powered eyepiece, such as a 25mm. One good high powered eyepiece, such as a 10mm. And one very good 2x barlow by a company like Orion or Celestron.

Sky-Watcher maksutov-newtonian Telescope

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Dual-Speed 2


Dual-Speed 2″ Low Profile Crayford Focuser


£129.00


SKYWATCHER 2


SKYWATCHER 2″ DUAL SPEED CRAYFORD FOCUSER


£129.99


2


2″ / 1.25″ Crayford focuser for SCT telescopes, upgrade


£73.99


NEW BAADER 2 INCH SC STEELTRACK CRAYFORD FOCUSER


NEW BAADER 2 INCH SC STEELTRACK CRAYFORD FOCUSER


£228.09


Revelation SCT Crayford Focuser Dual Speed


Revelation SCT Crayford Focuser Dual Speed


£109.99



Revelation Newtonian Crayford Focuser Dual Speed


Revelation Newtonian Crayford Focuser Dual Speed


£89.99