Homemade TMB 80

Wanna make a scope? Or better still, grind a mirror yourself. Or, you have some good tips in making a really useful accessory? This is the place to show what your hands can do...
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acc
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Favourite scope: Mag1 Instruments 12.5" Portaball

Post by acc »

Wow nice job! :)
We do it in the dark...
Portaball 12.5"
Takahashi Mewlon 210
William Optics 110ED
...and all night long!
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weixing
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Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
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Post by weixing »

Hi,
Good job... :) :)

Hmm... where is the Vixen dewshield??? I guess you need a bigger dewshield... :P

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
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MCYM
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Post by MCYM »

Hi Anat,

You never fail to amaze us with your technical feats. Congratulation on this successful conversion. So what's next on the drawing board?

Matthew
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anat
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Post by anat »

Thanks Rich, CC, Weixing, and Matthew.
Weixing, the Vixen dewshield is smaller than the new lens cell. To maintain the portability, I will use a flexible dewshield like that used for a 90mm mak.

Matthew, too many projects on the list :)

Anat
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perseid
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Post by perseid »

I suspect that Bangkok sky will be pretty cloudy this weekend. I hope it will not affect Penang sky.

Anyway, I would like to congratulate Anat for the successful completion of this superb project. I have previously wanted to buy a lens from TMB, but it would cost me USD1000, just the lens. Now, Anat completed the whole project for a couple hundred less than then lens cost alone. (where is the envy emoticons? when I need one?)

150mm APO for next project?
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denebman
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Post by denebman »

Good job Anat,

For your information, this is another TMB80/480 made by my friend with the lens imported directly from TMB's russia contractor, LOMO.
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10" Telekit with Zambuto optics~TMB 152/1200 (construction)~Takashi Mewlon 210~TMB 80/600
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anat
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Post by anat »

Liu Ming

I got the lens from APM. It does not have the word "LOMO".
http://www.apm-telescopes.de/info_bilde ... l_id=70257
It comes with a test report (P-V = 0.16 lamda, RMS = 0.026 lamda).
If one can get it directly from LOMO with a cheaper price, it is interesting.

Anat
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ariefm71
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Post by ariefm71 »

Hi Liu ming/Anat/anyone,

What do you think is the perfect tube to house the Astreya 102/650 lens ( http://astreya-optics.narod.ru/eng/prod/lens102.html )?
Perfect means the least modification required :-)

Arief
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anat
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Post by anat »

For TMB 105/650 and Astreya 102/650, I think the Borg 115 mm tube is a good option. If you want more portability, I suggest the Borg # 2005 and a Borg 80 mm tube. http://www.sciencecenter.net/hutech/bor ... /index.htm

You may need to use a flexible dewshield.

BTW, Astreya quotes very high shipping cost. So, I think the TMB 105/650 is more interesting. Grand Eye sells the TMB 105/650 at about US$1400 with a test report.

Anat
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