33
/es/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 30, 2025
3756684
344551
2
Create a timeline
Public Timelines
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
FAQ
Create a timeline
Public timelines
FAQ
About & FeedbackAcuerdoPrivacidadFAQ
Support 24/7  
CabinetGet premium
Donate

1 ene 1890 año - Reflectors were recognized

Descripción:

40 inches was close to the maximum feasible aperture for refracting telescopes. If telescopes with significantly larger apertures were to be built, they would have to be reflecting telescopes.

Añadido al timeline:

Technology timeline of astronomy

ByHunter
13 feb 2020
0
0
204

fecha:

1 ene 1890 año
Ahora mismo
~ 135 years ago
About & FeedbackAcuerdoPrivacidadFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL