对焦鱼骨板 (Deadline 14/1/2011) Important information

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Subaru
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文章 Subaru » 週一 10 1月, 2011 22:15

Thanks funoooo for arranging this service for us.

I would suggest the Sky90, FSQ106ED and ε-180ED users to make their measurements and agree on the design, before the actual production. Or a prototype for each type to be built before the massive production.

The measure I did, was use a 卡尺 to measure the inside diameter of the dew shield.

I think Angus did make a point, if the mask is made too fit, it may scratch the paint inside the dew shield. If the mask is made by fixing outside the dew shield like those branded one, that worry may be reduced.

Another suggestion on the slots is, the slots should be made a bit longer than the objective diameter, so that the whole lens surface is covered, instead of some masks that just cover part of the objective. Please note the outer part of the objective do collect most lights which affect the focus the most.

I don't have a long enough 卡尺 to measure for ε-180ED, may be we need Angus' help to provide the measurement and suggestion.

望远镜的品牌和型号: 高橋FSQ106ED
望远镜物镜直径: 106mm
望远镜的焦距: 530mm
望远镜的遮光罩内径: 145mm

望远镜的品牌和型号: 高橋Sky90
望远镜物镜直径: 90mm
望远镜的焦距: 407mm
望远镜的遮光罩内径: 110mm

Other common scopes: C8 & M8.

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cyyek
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我都要買。

文章 cyyek » 週二 11 1月, 2011 00:58

我都要買五個。一個80mm,一個100mm,一個150mm,一個200mm及一個250mm。請報價。謝

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funoooo
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Re: 我都要買。

文章 funoooo » 週二 11 1月, 2011 10:12

cyyek 寫:我都要買五個。一個80mm,一個100mm,一個150mm,一個200mm及一個250mm。請報價。謝
cyyek,
資料!
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syyuen168
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文章 syyuen168 » 週二 11 1月, 2011 10:14

我要買八個。80mm x 4, 100mm x 2, 150mm x 1. 200mm x 1. 一於有殺錯, 沒放過. 可快遞到東莞付人仔或香港過數 :twisted: :twisted:
最後由 syyuen168 於 週四 13 1月, 2011 11:52 編輯,總共編輯了 1 次。

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gary125
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來自: Jedi

文章 gary125 » 週二 11 1月, 2011 12:43

請問如果支鏡加左reducer.焦距是計算原本的數據還減焦後數據?
小弟CheaP一cheaP鏡子都想試試魚骨板:
1. Vixen vc200l
2. Sky rover ed110
3.William optics megrez 72

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Wah!!
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文章 Wah!! » 週二 11 1月, 2011 12:46

如果有樣版睇下就好喇~
可以睇下D邊切割得齊唔齊整~

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funoooo
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文章 funoooo » 週二 11 1月, 2011 13:08

Subaru 寫:Thanks funoooo for arranging this service for us.

I would suggest the Sky90, FSQ106ED and ε-180ED users to make their measurements and agree on the design, before the actual production. Or a prototype for each type to be built before the massive production.

The measure I did, was use a 卡尺 to measure the inside diameter of the dew shield.

I think Angus did make a point, if the mask is made too fit, it may scratch the paint inside the dew shield. If the mask is made by fixing outside the dew shield like those branded one, that worry may be reduced.

Another suggestion on the slots is, the slots should be made a bit longer than the objective diameter, so that the whole lens surface is covered, instead of some masks that just cover part of the objective. Please note the outer part of the objective do collect most lights which affect the focus the most.

I don't have a long enough 卡尺 to measure for ε-180ED, may be we need Angus' help to provide the measurement and suggestion.

望远镜的品牌和型号: 高橋FSQ106ED
望远镜物镜直径: 106mm
望远镜的焦距: 530mm
望远镜的遮光罩内径: 145mm

望远镜的品牌和型号: 高橋Sky90
望远镜物镜直径: 90mm
望远镜的焦距: 407mm
望远镜的遮光罩内径: 110mm

Other common scopes: C8 & M8.
Total Agree.

Please every one give the detail information.
Then we check together, and get the final confirmation dimension.
For the prototype, I think we can make it, if there is more than 2 pcs. However, some of them only one pcs. That will be no chance.
Subaru, if you have some the other design, I can ask Vixen to quote for you. However, please remember that he use the PMMA 2.5mm sheet to make it. You can not expect to make it as like as a telescope cover - 3D product. Anyway, if you have any design, please feel free to send me, then we can discuss together.
最後由 funoooo 於 週二 11 1月, 2011 13:31 編輯,總共編輯了 1 次。

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funoooo
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文章 funoooo » 週二 11 1月, 2011 13:12

Wah!! 寫:如果有樣版睇下就好喇~
可以睇下D邊切割得齊唔齊整~
Laser cut, 應該齊!

anguslau
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文章 anguslau » 週二 11 1月, 2011 13:32

I think the preferred design is to:
1) cut the mask with extra rim ~5mm, therefore making mask diameter ~10mm larger than outer diameter of dew shield
2) cut a ring with inner diameter ~0.5mm larger than outer diameter of dew shield
3) glue the above ring onto the mask so that we can just place the mask over the dew shield

I know this design may be slightly more expansive to make compared to the original design, but it should be a bit safer. funoooo, can you please see if the supplier can also quote a price for this design? Then people can decide which design and order accordingly.

Following are dimensions I measured for my scopes:

望远镜的品牌和型号: 高橋ε-180ED
望远镜物镜直径: 180mm
望远镜的焦距: 500mm
望远镜的遮光罩内径: 254mm
望远镜的遮光罩外径: 264mm

望远镜的品牌和型号: 高橋TOA-130
望远镜物镜直径: 130mm
望远镜的焦距: 1000mm
望远镜的遮光罩内径: 171mm
望远镜的遮光罩外径: 180mm

望远镜的品牌和型号: 高橋FSQ106ED
望远镜物镜直径: 106mm
望远镜的焦距: 530mm
望远镜的遮光罩内径: 141mm
望远镜的遮光罩外径: 146mm

望远镜的品牌和型号: 高橋FS-60CB
望远镜物镜直径: 60mm
望远镜的焦距: 255mm
望远镜的遮光罩内径: 77mm
望远镜的遮光罩外径: 80mm

Please note that my measurements for FSQ-106ED is different from that of Subaru for some reason. Subaru, can you please double check your measurements? Thanks!
Subaru 寫:Thanks funoooo for arranging this service for us.

I would suggest the Sky90, FSQ106ED and ε-180ED users to make their measurements and agree on the design, before the actual production. Or a prototype for each type to be built before the massive production.

The measure I did, was use a 卡尺 to measure the inside diameter of the dew shield.

I think Angus did make a point, if the mask is made too fit, it may scratch the paint inside the dew shield. If the mask is made by fixing outside the dew shield like those branded one, that worry may be reduced.

Another suggestion on the slots is, the slots should be made a bit longer than the objective diameter, so that the whole lens surface is covered, instead of some masks that just cover part of the objective. Please note the outer part of the objective do collect most lights which affect the focus the most.

I don't have a long enough 卡尺 to measure for ε-180ED, may be we need Angus' help to provide the measurement and suggestion.

望远镜的品牌和型号: 高橋FSQ106ED
望远镜物镜直径: 106mm
望远镜的焦距: 530mm
望远镜的遮光罩内径: 145mm

望远镜的品牌和型号: 高橋Sky90
望远镜物镜直径: 90mm
望远镜的焦距: 407mm
望远镜的遮光罩内径: 110mm

Other common scopes: C8 & M8.

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funoooo
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文章 funoooo » 週二 11 1月, 2011 13:36


anguslau
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文章 anguslau » 週二 11 1月, 2011 13:38

gary125 寫:請問如果支鏡加左reducer.焦距是計算原本的數據還減焦後數據?
I think it doesn't really matter that much. From what I understand, the patterns will have narrrower slits if focal length used is shorter and vice versa. Narrower slits will produce larger diffraction crosses while wider slits will produce smaller diffraction crosses. Both are usable so long as it is not vastly off. The only difference is that if your diffraction cross is too large or too small, it may be more difficult to judge the at focus point.

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funoooo
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文章 funoooo » 週二 11 1月, 2011 13:41

For the prototype, I think we can make it, if there is more than 2 pcs. However, some of them only one pcs. That will be no chance.
Subaru, if you have some the other design, I can ask Vixen to quote for you. However, please remember that he use the PMMA 2.5mm sheet to make it. You can not expect to make it as like as a telescope cover - 3D product. Anyway, if you have any design, please feel free to send me, then we can discuss together.

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funoooo
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文章 funoooo » 週二 11 1月, 2011 13:57

另外 Anguslau 設計,理論可以,但我估 Vixen 未必肯幫你做。要用亞摩尼亞去貼上圈。 PMMA 是硬料,做圈是比較麻煩。而且 custom make 不同尺寸就更加煩。

如果要做到 Anguslau 設計,我建議是在 Vixen 做了魚骨,然後拿回香港去新填地街找人做圈貼上。不過收多少錢就沒有底了。

其實我自己有想過在香港做,可惜香港專做 PMMA 都是用鋸去鋸,沒有 LASER CUT。太單薄是做不到!

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funoooo
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文章 funoooo » 週二 11 1月, 2011 16:14

Vixen 回覆!
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anguslau
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文章 anguslau » 週二 11 1月, 2011 16:56

funoooo 寫:另外 Anguslau 設計,理論可以,但我估 Vixen 未必肯幫你做。要用亞摩尼亞去貼上圈。 PMMA 是硬料,做圈是比較麻煩。而且 custom make 不同尺寸就更加煩。

如果要做到 Anguslau 設計,我建議是在 Vixen 做了魚骨,然後拿回香港去新填地街找人做圈貼上。不過收多少錢就沒有底了。

其實我自己有想過在香港做,可惜香港專做 PMMA 都是用鋸去鋸,沒有 LASER CUT。太單薄是做不到!
I don't think I need a thick cup (5mm high) as mentioned in Vixen's response. He can just use 2.5mm thick PMMA to make the ring. That should be sufficient. Or, alternatively, just make the ring in soft materials such as soft plastic or even foam and glue it to be mask. I believe that will be sufficient too.

Otherwise, just make the mask, allow for the extra rim. We can DIY and stick 3-4 small blocks of thick foams along the rim. That should be fine too. In fact, if making the ring is difficult, that would be my preferred option. That is, just make the mask with outer diameter = outer diameter of the dew shield + 20mm. Forget about the 4 little circles. I'll take care of the blocks to hold the mask onto the dew shield.

I don't mind to be a guiene pig for this design. Just make one for each of my scopes. I'll report back on their performance after I have a chance to use them.

Thanks,
Angus

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