セレストロン セレストロン セレストロン ファーストスコープ
【国内正規品】 CELESTRON 天体望遠鏡 トラベルスコープ70 屈折式 経緯台 口径70mm焦点距離400mm CE21035
【国内正規品】 CELESTRON 天体望遠鏡 NexStar4SE 自動で星を追いかけてくれる 簡単操作 日本語コントローラー 国内保障書付き CE11049-A
【国内正規品】 CELESTRON 望遠鏡 C90MAK マクストフカセグレン 鏡筒のみ 口径90ｍｍ 焦点距離1250ｍｍ CE52268
Kenko 天体望遠鏡 Sky Explorer SE-AT100N プラネタリウムソフトセット 反射式 口径100mm 焦点距離450mm 卓上型 自動追尾機能付経緯台 003428
【国内正規品】 CELESTRON 天体望遠鏡 コメトロン 反射式経緯台 ファースト スコープ 卓上タイプ CE21023
|価格||￥ 15,846||￥ 9,492||￥ 71,655||￥ 23,059||￥ 25,419||￥ 9,259|
I'm not sure how you would collimate this scope, as it doesn't have an adjustable primary mirror or spider vanes. But it didn't need collimation when I got it (unlike the 4-inch), and it doesn't need it now.
The moon is ultra-sharp through this scope, and you can check my user photo of Saturn for what to expect from the planets.
Despite the lack of extreme magnification (which frankly will look blurry with such a small scope), this scope is a wonderful device! I've used it every clear night since it arrived (about three weeks ago), and I am never disappointed. The included finder scope is a bit of a pain to zero in properly, as it is manual and not an electronic red dot scope, but it works well after some effort. The moon is wonderful, as is seeing star clusters which are invisible to the naked eye. I have not gone out to a dark sky location yet, but I am sure this scope will only impress me even more.
I bought the scope for my neighbors 8 year old son. But before I passed it along to him, I decided to try it out on the Heavens. Out of the box I was far from impressed. Sure, it is only a 3" reflector. But the optic problems it was plagued by were enormous. The eyepieces are crap, sad to say. But worst of all, the optic train is even worse, at least my model.
Most reflectors have the ability to collimate the optics. That is, align everything with respect to the eyepiece. This scope does not. No way to move the primary mirror, and only "fake" alignment screws on the secondary mirror. On top of all this, the secondary mirror (the mirror that reflects the image from the primary to the eyepiece) was installed crooked. This definitely didn't help any.
First thing I did was remove the secondary (small) mirror from the focuser and re-glue it so that it was lined up better. This was done by "eyeballing" but it made a vast difference in the view. Easy to do with some contact cement. This is about all you can do to help the optics in this little scope. This may have just been my scope, but I didn't have time to send it back.
Once I made this change, I was impressed. Remember, you're not going to get Hubble views out of this scope. Even after the fix there was a lot of astigmatism and coma in the eyepiece. Stars showed lots of pincushion artifacts just outside of the center field. But when I trained the scope on the Orion Nebula, there it was! With a bit of averted vision (not looking directly at the object, but sort of off to one side) I was treated with the classic nebulosity. The Pleiades were brilliant, and I was easily able to make out the shape of the Andromeda Galaxy. Jupiter's four big moons were obvious, though the cloud bands took some imagination (but there was light thin clouds disturbing my view from Earth). The Moon was very impressive. Even when I changed to the 4mm ocular, the Moon showed lots of detail that should make any kid bubble with joy. The craters were very impressive. Though I did not see myself, I am sure the rings of Saturn would be easily visible.
I remember, as a ten year old, looking at Saturn with my brothers 60mm Sears refractor. I was enthralled and it set the stage for a life long desire to explore the Heavens. Since then I've owned an Edmund Astroscan and 6" reflector, two Celestron C8's, a C11, a home made 13.1" Dobsonian reflector, and my current Takahashi refractors, and my new 22" Obsession scope. All of this because of my first back yard views with a Sears piece of junk. This scope is far better in my opinion. Remember, you're not necessarily getting a top notch telescope. The build overall is impressive however. A finderscope would be nice, but I had pretty good luck just sighting down the tube and hunting. But a scope like this might just be the one thing to spark curiosity in a young mind. And there just isn't much of that going around these days.
If you have a youngster that you think might like an introduction to the night sky, this is the perfect little gem. Sure, far from perfect, and might even need a bit of tweaking if you are brave enough. But even out of the box it gives descent views of the brighter celestial objects, plus the Moon and bigger planets. And it is easy to carry and a breeze to set up. Go for it!