Is a 60mm X 700mm Telescope good? how far away can i see with it?
828006
It's a great toy. A 60mm aperture (2.4") won't gather much light (which also determines the amount of detail you can make out at higher magnifications). Is this a refractor? Cheap models suffer from various distortions produced by inferior coatings, poor collimation, etc.\n\nYou can see a long way (moon, mars, stars, etc), but thre real question is how good the image is (fuzzy, dim, etc)\n\nTry the following website (page goes to a celestron 760 mm refractor - a decent instrument. Lots of description.)\n\nhttp://www.telescope.com/jump.jsp?itemID=116608&itemType=PRODUCT&path=1%2C2%2C4%2C13&KickerID=699&KICKER
1055664
You can do it with a laser a small circular obstacle (1cm diametre) and some lens. You built a telescope like picture to have 2cm diameter beam  you put the obstacle in front and you regard at 20 cm from the target
982426
That depends what consideration you have.  Reflecting have the advantage of having less chromatic aberration than refractor, and tend to be larger for a given weight.  The most important aspect for a telescope is the size of the primary mirror, because it defines the light gathering capability, so this is a case where bigger is better (as long as the quality is there, evidently)\nCassegrain is a variation of the reflector, where a secondary mirror sends the light back through the center of the primary; the other style is Newtonian where a diagonal mirror sends the light t the side.  For moderate size telescope Newtonian is more comfortable.\nA very important aspect to consider is also the mounting.  If you only want to do optical observation, then a Dobsnian mounting is very cheap, as it forgoes the tracking mechanism.  If you would want to do astophotography with long exposure, then you would need an equatorial mount with a drive that can track a star.  Recent models rely on computerized motorization, which as most electronics, have allowed the advanced capabilities for an relatively acceptable price.\nMy suggestion is that you document yourself, perhaps buy a couple of issues of astronomy magazine, like Astronomy or Star & Telescope, and get acquinted with the market.  You will be able to decide what you want, and what you can afford.\nAnd I hope you have access to clear sky and dark night.\nHappy observations!
154590
I bought a field guide that helps you find things with your telescope and basic telescope knowledge. i know you have to know where north/south (which ever is closer to you) and what your latitude is in degrees (how far you are from the equator).
46325
Not exactly sure what you mean here. I'll assume that since it's in the astronomy section the instrument you refer to is a telescope. If the atmosphere is very turbulent you are going to get poor performance, ie it's going to be hard to focus on anything and the image is going to jump around in your field of view a bit. This can be caused be heat that is rising at night after a warm day. \nIf you are observing planets then a mild haze might not be that bad. However if it is hazy or foggy and you are trying to observe other things then this will be a problem, especially if the moon is up because the haze will defract the moonlight over a large part of the sky.
805037
I'm no expert, but I'd go for the Oberwerk binos.  If you plan on using them for astronomy, I'd also highly recommend a decent tripod so your neck and shoulders aren't in pain after a night of viewing.  It will also give you steady images.\n\nThere are many favorable reviews for Oberwerk 15x70s on www.cloudynights.com.
1018864
You can purchase a Tasco 4.5 inch reflector telescope that comes with eyepieces that give magnifications of 50x 100x and 200x. \n\nTasco however is not known for great optics. They are better know for cheap optics. \n\nYou did not mention what you wanted to use the telescope for. \n\nFor a decent spotting scope, select a Celestron Ultima 100 mm. \n\nAnd do not scimp on the tripod. \n\nFor a top of the line spotting scope, select a Swarovski. The best of the best. \n\nFor astronomical viewing you want something a tad larger. An 8 inch reflector.  \n\nCheck out the link to this one.
791471
The biggest thing you need to know is how interested in astronomy is the person getting the gift. If they are then by all means buy the gift.  Either Meade or Celestron make great scopes for under how much you have to spend. Either cassigrain or refractor  will do what you want.  Both sites will explain how each one works and give list prices.  Most retailers sell for under list price
42704
20 cm unless you are near-sighted, in which case it is closer
1170213
It depends on what you need telescope for.  Things like Jupiter, Saturn, the Moon, the Orion Nebula will look great.  This is a great out of the box scope but it isn't a large one.  If you want to do a lot of deep space exploration you need a bigger/different scope.  There is an article at Sky & Telescope about chosing the right scope.\n\nhttp://skyandtelescope.com/howto/scopes/article_241_1.asp
676367
A 5" scope should be more than enough.  There are hobbyists on the net that talk of watching Jovian transits with 4"\n\nThe site link below has an uncrippled shareware program JupSat95 that calculates a lot of info about Jupiter include satellite transit information,\n\n"When a satellite is transiting Jupiter, (passing in front of Jupiter's disk), then it's numerical information is printed in Yellow."\n\nhttp://indigo.ie/~gnugent/JupSat95/
10899
In general, the best money for the aperture (the amount of light the telescope takes in), is a Dobsonian-style Newtonian. They are significantly less expensive than refractors with the same light gathering power. As for brand, etc., as long as you get it at a place that sells primarily cameras/telescopes/binoculars, you should be fine. Avoid department store/Wal-Mart telescopes; they may be cheap, but that's what you get. The sources provide a lot more information.
353306
Try this site too:\nhttp://www.telescopes.com
166306
You need to know the focal length of the eyepiece as well.  The magnification is the ratio of these focal lengths; e.g., 48 if you have a 1 cm eyepiece.  The apparent distance is the actual distance divided by the magnification.
162543
Is there a question somewhere there?\n\nWhen you look in a telescope you shouldn't need to wear glasses just adjust the focus till the image is clear.  The type of eyepiece you use doesn't matter.
1134720
Hi, great question.  I got a new telescope a year ago and have found a couple of excellent sites.  First try 'skyandtelescope.com'  this site has several features including a sky chart.  Enter your info, and it gives hour by hour info on whats up there to see, as well as info on upcoming events.  It offers 'how to advice' for telescopes, binocs and  astro photography.\nThe second is 'astromart.com'   this is one of THE BEST and most helpfull sites I have been to.  What a great forum.  Several active members are well known scientists and professors as well as very knowledgeable amature astronomy buffs.  No question is to stupid for them and you won't find a better place to gain advice and knowledge.   Questions posted are answered very quickly, usually in no more then a few hours, sometimes immediately.  Try both of these, I'm sure you will find what you need.    They are both  free of charge, believe it or not!!!\n\nLet me know what you think,  my s/n on astromart is lilkritter!!  Good Luck!
138088
The hubble telescope it up above all the atmospheric disturbance, allowing for much higher quality photos.\n\nFor the same reason stars twinkle, land based telescopes have a limited resolution power, after a certain size, it doesnt really help any (unless you want to build a complicated atmospheric correction machine to adjust the mirror to compensate).