What is SCT?

[Actor]

nt.

 

[musicaleCA]

This, leads to this, which leads to this.

Google is your friend.

 

[Dwig]

While reading about SCTs, also check out:

Catadioptric system - Wikipedia, the free encyclopedia

which talks about a broader range of similar optical designs including the Maksutov, which is also common in small amateur telescoped. It is also the progenitor of the many mirror lens designs used in still photography.

 

[Actor]

I don't think it has anything to do with telescopes. Here's the quote straight from the book:

"Keep in mind that SCT will vary from one photographic paper to another."

 

[marp]

In that case, to paraphrase musicale.

This leads to this, which says "... Standard Contact Time (SCT)..." .

 

[Actor]

Excellent!