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Will there be a difference in what can be seen with a 50mm telescope and a 70 or even 80 mm one?

If relevant; Comparing binocs 10x50mm vs. SkyMasters 25x70mm, the 70mm gives for example: Much more detail on the Orion Nebula Andromeda slightly more detail of spiral shape vs. smudge Myriad of ...
2x_espresso's user avatar
3 votes

Will there be a difference in what can be seen with a 50mm telescope and a 70 or even 80 mm one?

What an increase in aperture gives is an increase in light-gathering ability. This results in an increase in brightness and image resolution. The size of the image does increase as the size of the ...
Aaron F's user avatar
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First photographic image taken with telescopes to produce astronomically useful results? What telescope was used?

First useful astronomical photo:- The first useful astronomical photo was of a total solar eclipse, taken by William de La Rue in 1860. He used a Kew photoheliograph to capture the precious shots of ...
APOPHIS's user avatar
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3 votes

What are the technological advancements that made it possible for modern large telescopes to work with alt-az mounts instead of equatorial mounts?

The equatorial mount is an analog computer that performs the transformation from local terrestrial coordinates to celestial coordinates. Building it into the structure of the telescope is necessary ...
John Doty's user avatar
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4 votes
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What are the technological advancements that made it possible for modern large telescopes to work with alt-az mounts instead of equatorial mounts?

I would say the field derotator was a great advancement. The field of view of an altazimuthally mounted instrument will rotate, just like for the naked eye—for example, the “Lady in the Moon” seems to ...
Pierre Paquette's user avatar

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