(2018,1/12復元再投稿、テキスト消失）

I propose innovative bracket base rings for the Borg’s OTA tube.
ヒンジで締めたりするのだけがバンドではない、という提案です。
鏡筒パイプと連結するモジュールパーツの間に挟み込む発想です。
面で精度が出れば、自動的に軸精度も出るのです。BINO用には理想的と考えます。

 

The left is “after”, and the right is “before”.

Here is the wise solution of extending the back-focus.
It is the restorable customize of the focuser setting.
原状復元可能な方法でバックフォーカスの追加確保が可能なことが分かりました。（鏡筒販売店のサイトには、「（標準状態で）余裕で合焦・・」とありますが、単体用のEMSで合焦しても、BINO用のEMSで合焦するとは限りません。それはBINOの場合は、鏡筒間隔(D)の設定によって、必要バックフォーカスが大きく変化するからです。一般的に、業者さんはその辺の理解がまだ不十分のようです。）

 

The improved version of the EMS-UL is just ready to produce.
You may remember the announcement of the new version of EMS-UL posted on My 18th. With the stock of the new joint rings being ready, I am finishing the number-1 pair of the new EMS-UL SET for the US.

The new EMS-UL of the standard(minimum) spacing has evolved in terms of the following.

1.light-path-L1 was shortened by 2mm.
2.The rigidity of the joint increased by the simpler structure.
From 3-pieces to 2-pieces of the parts included.

3.Aperture rim is added at the end of the joint ring.
(It will improve the contrast.)

Now, I am announcinG the new definition of the light-path of the EMS.

The new definition of the light path consists of the two parts.
One is the L1,the fundamental lighg path, from the rim of the barrel to the rim of the filter flange. And the othre is L2, that is the height of the eye-piece adapter, in this case, 2-inch sleeve.
And the total light path is LL=L1+L2.

The comparison of the light path between the old and the new EMS-UL is the following.

OLD EMS-UL— L1+L2=92+58=150mm=LL
NEW EMS-UL— L1+L2=90+58=148mm=LL;
LL= total light path.

To minimize the L1 has the significant meaning in benifiting the margin of the back-focus of the scope. On the other hand just reducing the L2,the height of the adapter, is like a trick that must be canceled at the actual usage.

I will also show you the precise light-path of the EMS-UM in passing.

EMS-UM– L1+L2=78+44=122mm=LL

I must apologize to you for the wrong desplay of 120mm for a long time.
The reason was just simple. At the release of the EMS-UM, the original 31.7mm-adapter was 42mm in height, but later changed to 44mm by the report of users that so many eye-pieces touched the protective filter on the tip of the barrel.

(11月中旬のウェブサイト・クラッシュで日本文が消失しました。EMS-ULの光路長が2mm短くなったというニュースです。英文はたまたま控えがあり、復元できました。12/07記）