This is what a 12.5" f/6 looks like

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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ariefm71
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This is what a 12.5" f/6 looks like

Post by ariefm71 »

A similar 75" focal length newtonian (e.g. 15" f/5) will probably have the same height.

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ariefm71
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Post by ariefm71 »

Pic 2. the aluminum tube is 1.5" ID and 2 meters long each.

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acc
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Post by acc »

Heh your Vixen refractor seems ready to make a suicide leap after seeing the arrival of its big brother... :)
We do it in the dark...
Portaball 12.5"
Takahashi Mewlon 210
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Bergkamp_
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Post by Bergkamp_ »

poor vixen.. sell me cheap cheap ba..
Wee Ern aRmeD wiF Telescope reAdY tO taKe ovEr thE skY .. wIF jUst mY naKed eYEs .
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Tachyon
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Post by Tachyon »

It looks very loooooong!
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Airconvent
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Post by Airconvent »

you need to join the chingay stilt walkers so they can teach you how to walk on stilts. otherwise how are you able to see through the eyepiece?? :lol:
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ariefm71
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Post by ariefm71 »

No, i'm not going to make a 75" fl scope :-)
The aluminum tubes will be shortened to support up to 60" fl optics. Thinking of getting 12" f/5 primary from Mark Suchting of NSW, Australia. His mirrors are certified to 1/50th ptv wavefront. If that happens, the ID of the wooden rings need to be expanded/cut to 13.5" (currently 12" ID for my 10" optics).

Arief
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VinSnr
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Post by VinSnr »

ariefm71 wrote:No, i'm not going to make a 75" fl scope :-)
The aluminum tubes will be shortened to support up to 60" fl optics. Thinking of getting 12" f/5 primary from Mark Suchting of NSW, Australia. His mirrors are certified to 1/50th ptv wavefront. If that happens, the ID of the wooden rings need to be expanded/cut to 13.5" (currently 12" ID for my 10" optics).

Arief
How much does Mark charges for that?
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ariefm71
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Post by ariefm71 »

aud1700 for 12f5, aud2400 for 14f5
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Post by VinSnr »

ariefm71 wrote:aud1700 for 12f5, aud2400 for 14f5
holy cow!
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