I attended two lectures from John while he was still with us and two star parties in Monmouth Oregon. I listened closely and gleened every bit of knowledge in his building videos and concluded after being thrilled at the prospect of building my own large aperture Dobsonian with the weeks of work, grinding, cleaning and general thril of talking to others in his class that it would be complete dumbassery to even attempt it so I just went and bought a Celestron SE and have been heppy ever since. I do miss John though. //ji
Поздравляю, Генрих! Большой труд! Отличный тест по Сириусу! Построили в оригинальной традиции Джона Добсона - вручную, с помощью подручных материалов, а не hi-tech, и по принципу достаточности - не гоняясь за заоблачными Штрелями. Желаю, чтоб телескоп принес Вам много радости при наблюдениях звездного неба! Последнее, что осталось сделать, это - покрасить в фирменный цвет :)
I would suggest starting with a 6" version and if you feel like another 3 months of laborous grinding and sweating, go for the 16" that John carried in his van. I think it had a Focal length of about 25 feet! I remember one of Johns favorite sayings to his students . . . . " In this class there is nothing that you can do that we can't un-do......but if you drop your mirror on the concrete then you are just a damn fool" John killed me with his wit. //ji
Dear Henry. congratulations for the courage, effort and stubbornness to make this tool. The honeycomb glass disc you used for the primary mirror is beautiful. Was the glass made in Russia? By Daniele Negro from Italy
A very nice scope and mirror. But here in good ‘ol US of A we use the Zambuto and Kennedy and Lockwood mirrors. It is the best in the globe of world for Strehl and no primary ripples and prefer the smooth surface. To look at your mirror is believing what is call honeycomb. This must weigh very light. Also your mirror cell can promote astigmatism so it is making sense for hire a moving frame with whiffle trees. But your scope it is beautiful. Please share to us star test results and use maybe Ronchi and Dpac to prove your optics. Keep up good work!
Panie Henryku, czy można Pana odwiedzić i dostąpić zaszczytu podziwiania nocnego nieba przez ten teleskop? Przecież to chyba największy Dobson w tej części Europy ! Gratuluję talentu i ciężkiej pracy !
This mirror in the video did not have any coating at all, just bare glass. It will still reflect images and you can use it for testing the shape of the mirror. Once it passes whatever testing you're doing the mirrors are generally sent off to be coated with a thin layer of aluminum as this will greatly increase the reflectivity of the mirror.
Я восхищён Вами. Ваша работа впечатляет. Сделать зеркало таких размеров -это мастерство . Чувствуется видать Советская школа. Извините за вопрос. А зеркало у вас на телескопе гиперболическое или элиптическое.
Здравствууйте! Можно с вами связаться? Мне нужно отшлифовать заготовку 550 см в диаметре под 1800 мм фокусного расстояния. Либо можем обсудить аренду вашего зеркала, если это возможно? Мы - группа документалистов. Снимаем кино про академика А.Д. Сахарова.
I attended two lectures from John while he was still with us and two star parties in Monmouth Oregon.
I listened closely and gleened every bit of knowledge in his building videos and concluded after being thrilled at the prospect of building my own large aperture Dobsonian with the weeks of work, grinding, cleaning and general thril of talking to others in his class that it would be complete dumbassery to even attempt it so I just went and bought a Celestron SE and have been heppy ever since. I do miss John though. //ji
Assuming your not referring to this gentleman as John Dobson because it’s not him.
@@woody5109 Correct assumption Woody. Just talkiing about John, in general teaching essentially the same skills as this video. //ji
Поздравляю, Генрих! Большой труд! Отличный тест по Сириусу!
Построили в оригинальной традиции Джона Добсона - вручную, с помощью подручных материалов, а не hi-tech, и по принципу достаточности - не гоняясь за заоблачными Штрелями.
Желаю, чтоб телескоп принес Вам много радости при наблюдениях звездного неба!
Последнее, что осталось сделать, это - покрасить в фирменный цвет :)
Your work is truly amazing,
would you please show us your photos or videos captured by your telescopes?
or where I can see it?
I would suggest starting with a 6" version and if you feel like another 3 months of laborous grinding and sweating, go for the 16" that John carried in his van.
I think it had a Focal length of about 25 feet!
I remember one of Johns favorite sayings to his students . . . .
" In this class there is nothing that you can do that we can't un-do......but if you drop your mirror on the concrete then you are just a damn fool"
John killed me with his wit. //ji
Dear Henry. congratulations for the courage, effort and stubbornness to make this tool. The honeycomb glass disc you used for the primary mirror is beautiful. Was the glass made in Russia? By Daniele Negro from Italy
A very nice scope and mirror. But here in good ‘ol US of A we use the Zambuto and Kennedy and Lockwood mirrors. It is the best in the globe of world for Strehl and no primary ripples and prefer the smooth surface. To look at your mirror is believing what is call honeycomb. This must weigh very light. Also your mirror cell can promote astigmatism so it is making sense for hire a moving frame with whiffle trees. But your scope it is beautiful. Please share to us star test results and use maybe Ronchi and Dpac to prove your optics. Keep up good work!
Are you adding digital setting circles to your scope? How about a GOTO drive system?
I would be nervous to roll the telescope around with the mirror nearly vertical! Nice realisation, anyway!
U're genius!!!!. Congrats!!!.
Panie Henryku, czy można Pana odwiedzić i dostąpić zaszczytu podziwiania nocnego nieba przez ten teleskop? Przecież to chyba największy Dobson w tej części Europy !
Gratuluję talentu i ciężkiej pracy !
What sort of reflective coating does it have on it?
This mirror in the video did not have any coating at all, just bare glass. It will still reflect images and you can use it for testing the shape of the mirror. Once it passes whatever testing you're doing the mirrors are generally sent off to be coated with a thin layer of aluminum as this will greatly increase the reflectivity of the mirror.
Absolute genius
how much does that mirrror weigh?
Я восхищён Вами. Ваша работа впечатляет. Сделать зеркало таких размеров -это мастерство . Чувствуется видать Советская школа. Извините за вопрос. А зеркало у вас на телескопе гиперболическое или элиптическое.
Like
Генрих молодец.
Russian Farmers leading the Space Race..
Where can i buy a blank like that
Kur ir kaip dengėt aliuminiu?
Those bearings are extremely small for that size scope
Amazing!
that secondary is too small for that fast an f ratio. It will aperture out the light cone for low power eyepievces.
Здравствууйте!
Можно с вами связаться? Мне нужно отшлифовать заготовку 550 см в диаметре под 1800 мм фокусного расстояния.
Либо можем обсудить аренду вашего зеркала, если это возможно?
Мы - группа документалистов. Снимаем кино про академика А.Д. Сахарова.
На вашем последнем видео ,ничего хорошего не видно.даже Луны не видно.в пустую только время потратили.
На вашем последнем видео ,ничего хорошего не видно.даже Луны не видно.в пустую только время потратили.