正立ミラーシステム(EMS)を開発した松本龍郎のサイト。 たった2回の反射で天体望遠鏡の像を正立像にします。
Tatsuro Matsumoto; Inventor of the EMS, Erecting Mirror System. EMS offers non reversed upright image with no additional undesirable abberations.
I am sending you photos of my completed binoscope. All is perfect.
I am enjoying the views very much. My self-made mount functions very well in all respects. I even find no need to add any friction adjustment capability, because the adjustable stainless steel weights allow perfect quick adjustment for fine balance with any eyepiece pair to perfectly hold any altitude. Of course, this idea was given to me from the photograph of the TOA-130 binoscope on your web site. It was a very good idea and I thank you for it.
Perhaps the only disadvantage of the TOA-130 is the heavy weight, which requires more careful setup and take down, especially the take down in the dark. But of course the big advantage is the optical near perfection.
I am not exactly happy with these photos, because it is hard to see detail of the black mount when the sky background it so bright. I hope to take some better photos on a cloudy day to send you some better photo.
Thank you for the link. Now, yes, I would like to add to my report these comments:———————————–
Tatsuro, I want to thank you very much for your EMS backs that I purchased from Joe Castoro. Your EMS backs are very fine craftsmanship, and your design is very elegant. The system is easy to collimate and merging views is always easy. And I really appreciate the views that are oriented correctly up/down and left/right. The various adjustments have become easy to accomplish now with very little thought. This is all made possible by your great EMS invention.
Thank you for suggesting that I should use your Extra Large 65mm EMS backs. These TOA-130 are rather large diameter, and the Extra Large backs allow the tubes to be spaced a wider distance apart. I think assembly of the system would be less convenient with the 50mm EMS backs requiring closer spacing of the telescopes. Plus I am happy to know that there is never any vignetting with this system.
My eyesight is not perfect. My left eye has a little astigmatism, and my right eye has more astigmatism. The merging of two eye views results in an image quality that helps very much to overcome the defects of my eyesight, without wearing glasses. Thank you for making this possible.
I would also like to thank Joe Castoro for his advice and assistance in helped me to make a successful binoscope. Joe is a good partner for you in the USA.
管理者のコメント;
Dear John, Congratulations on your completion of the fine “TOA130-BINO”! I am much proud of you on the splendid job. It is very interesting and exciting to see various approach that is different from mine, but as efficient as mine. I also note of your special talent of planning, too. I am also looking forward to your next plan and am always ready to assist you. Thank you for your generosity to allow me to put your name and e-mail link on this file, too. I am always welcome of your further contribution to this corner. Your friend, Tatsuro mustn’t forget to thank Mr.Joe Castoro who had kindly assisted him through his project, too.
“MOROHA” maeans “double-edged” in Japanese, and “NO” is for “of” , and “TSURUGI” is for “sword”. The order of the words is reversed in Japanese. So, the title means ” DOUBLE-EDGED SWORD”. Japanese use the term expressing contradictive resort that can bring us both the blessing and curse.
A video of EMS-BINO was submitted to “YOU TUBE” by an Italian user. I firstly welcomed the fact that the VIDEO of my EMS-BINO is being released to all over the world, and put the link on top of my website. But, stop to think of it, I thougt at the same time of the concern of MOROHA NO TSURUGI both in the field and in its contents itself. I know that there is no harm meant by the submitter, but he treats my EMS-BINO as if it were of the same level of product as the commercial binoculars. So, I withdrew the link of it on the top of my website.
High Landerには、VixenのXYスポット・ファインダーを取り付けています。これをそのままBINOに取り付る事が 可能ですが、今回は、国際光器の正立ファインダーを取り付ける予定です(納入待ち)。“正立像”で統一です。 前述した通り、実際にはファインダーが無くても導入に不自由しない程、使い勝手は良いです。
Coo is enjoying blissful days with his new keeper. He won the freedom of playing out at his leisure through his personal entrance door that was made by his kind keeper, and the warm room of the perfect shelter at a time.
Coo is enjoying blissful days with his new keeper. He won the freedom of playing out at his leisure through his personal entrance door that was made by his kind keeper, and the warm room of the perfect shelter at a time.
Finished EMS-Binoscopes are free from the original adjustment, because they are carefully adjusted by Matsumoto before shipping. Especially those who had accepted the binoscope at my shop have proved that EMS-BINO will have no collimation problem by the vibration of the family car while carrying.
Still, however, some of them have shown collimation problem by shipping. And in such a case, users should recover the collimation by themselves if you cannot afford to bring your troubled binoscope to my place. So, I reccommend you to carefully study at my website to master how to adjust the disordered binoscopes.
Assume that the left 500yen coin is the image of the left telescope. In condition that the XY image adjuster has not lost the original position, I can judge the objective end of the right telescope is misalined in the left-down direction. In other wotds, you have only to pan the right scope in the same direction as the right 500yen coin.
This is the merged image by the above adjustment. You will still find something odd in the above image. Yes, the left 500yen coin leans to the left, and the rihgt one to the right. In other words, the left and right image of the vertical lines form the “V” shape. So, I call this tendency of the error “V error”. And the counterpart error I call is “/I”(lambda) error. Now, you know that collimation is one thing, and image inclination is quite another.
1.Unscrew the three yellow arrowed set-screw, and the connection of the two units of the EMS is released, and you can rotate the units with each other. Take the most care when you unscrew the last screw so that the eye side units that is slightly blued will not rapidly drop down.
2.Rotate the whole blued part quite a bit in the same direction of that you want to rotate the image. Red arrow shows the rotating direction to correct the inclined image shown at this sample.
3.Of course, you should reversely do the same adjstment on the opposite scope. Don’t forget to screw the set-screws after finishing the adjustment, too.