But what one sees from space THROUGH A TELESCOPE is not the same as what one sees from the earth through one's own pupils.
I agree with Matt: You've obviously never looked through a telescope.
...you are gonna' see way way way more stars than the 3,500 you and I counted there atop Mauna Kea.
You have absolutely no idea what relative magnitude means, do you?
Now Suspilot, even with your Buzz Aldrin autographed star chart featuring all of the 6 magnitude or less/naked eye visible stars you still will not be able to tell with any certainty often times, perhaps even the majority of the time, which star is which looking through your scope.
Begging the question -- rejected.
You were asked, for each of the Apollo reference stars, to list any within the 28X sextant FOV around them that had the same relative magnitude. The ball has been in your court for weeks now on this point, and you continue to fail.
These systems require computers to read their star charts as a human cannot.
No, this is your supposition.
In the case of an ICBM, there is no human onboard to read it. The task
must be accomplished by the computer since the computer is the only intelligence aboard. You have the requirements completely backwards. You're trying to tell us that we need a computer to read the computerized star chart, and there's no other way to do astronavigation. Instead the star chart is "computerized" (i.e., stored in digital form, as opposed to just being printed on paper) because that's the form the computer needs it in.
Though in the case of the SR-71 Blackbird ... a pilot can try to help the computer.
That's because the automatic star-tracker is intended as a
convenience for the navigator. The human navigator -- not the computer -- is ultimately responsible for completing the ANS calibration.
Just because a cruise control
can help an automobile driver maintain a stead speed, that doesn't mean the problem can't be solved any other way, including by manual control and/or assistance.
And of course a SR-71 pilot can fly the plane on his/her own independent of the planes automated stellar-inertial system.
Yes and no. ANS failure was an abort condition. The airplane is flyable, but the mission is aborted.
Spaceships a are a different kettle of fish.
Indeed. The requirements for navigation are entirely different, the criticality of the various components and procedures is different, and the role of the pilots is different.
And the assessment of these
is rocket science, and you aren't qualified. You are not the teacher, Patrick. You aren't even a very good student.
...what would happen in the very likely occurrence from time to time of there being uncertainty with regard to the identity of navigational stars?
Asked and answered -- at length.
DISASTER GUARANTEED, one cannot manually fly the thing from cislunar space blind...
False. This is one of the key differences between Apollo and your ill-fitting examples: the Apollo INS
did not have to be operating continuously. Missiles have a short mission life with pointing constraints that vary over the mission. Full-time INS is required, and stellar correction for launch dispersion merely improves accuracy. It's not mission-critical. Aircraft are subject to unexpected motion from the air through which they move. Full-time INS is required.
An Apollo spacecraft in cruise flight is subject exactly and only to orbital mechanics. Open-loop control is proven to be amazingly accurate in these cases. Full-time inertial monitoring and control is unnecessary.
And of course for all your hemming and hawing, you have entirely omitted a discussion on the
other navigation system each spacecraft employed, which can be used as a backup.
So visibility is variable, UNKOWABLE!
No. That's just a bogus consequence from your handwaving FUD-spewing. It doesn't occur in real life.
THEY HAD NO CLUE AS TO HOW TO ACTUALLY DO THIS...
No,
you have no clue as to how these things are actually done.
But with a Surveyor VII, not with a manned craft pretending to navigate by virtue of employing stellar inertial type guidance with or without help from the MSFN.
Bwahahahahaha! Every single spacecraft we've sent aloft since Rangers and Surveyors, including the satellites I help design and build today, uses/used an inertial guidance platform augmented with a stellar fix -- typically far cruder than those used for Apollo.
You have absolutely no clue how space navigation is actually done.
SINCE THEY CANNOT RELIABLY ALIGN THE IMU IN ALL REASONABLY ANTICIPATED CIRCUMSTANCES...
Asked and answered -- your made-up rules don't apply.
Any reasonable person could not read this any other way.
"La! La! La! You can't change my belief! La! La! La! I don't care one whit what you think of my claims!"
If you'd take the fingers out of your ears, you might be able to hear what all these reasonable, properly educated, well-experienced people are telling you.