Stellarium

Rotation Celestial Sphere

Asked by sandra salguero

When placed "Sky and viewing options Window/Markings/Projection/Orthographic", the celestial sphere is limited to 2 movements, depending on whether enabled "equatorial" or "azimuthal" option, impossible full flexibility of the Stellarium, a third option would be important torelease the movements of the celestial sphere completely (3 degrees freedom), this would greatly improve the program.

Sandra Salguero

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Alexander Wolf (alexwolf) said : 		#1

What exactly you mean when you say "third option"?

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gzotti (georg-zotti) said : 		#2

It may make sense for a small fraction of users to have ecliptical, and for an even smaller fraction, galactical options, but the immediate use of a free rotation escapes me.

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sandra salguero (sansalcab) said : 		#3

what interests me is that when you choose the menu "markings" the option
"orthographic" observed celestial sphere can rotate freely (including
coordinate lines and other graphics functions) when it comes to one of the
poles is not necessary to rotate, rather chosen to continue the movement
with the mouse, I think now would be a new option in "sky window and viewin
option" that would give greater flexibility to the search results.

2015-10-04 19:07 GMT-04:00 gzotti <email address hidden>:

> Your question #272051 on Stellarium changed:
> https://answers.launchpad.net/stellarium/+question/272051
>
> gzotti posted a new comment:
> It may make sense for a small fraction of users to have ecliptical, and
> for an even smaller fraction, galactical options, but the immediate use
> of a free rotation escapes me.
>
> --
> You received this question notification because you asked the question.
>

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gzotti (georg-zotti) said : 		#4

The way it is programmed, you cannot look higher up than into the zenith, this is intended.
Therefore there may now also be technical reasons that go against this idea.
See e.g. https://en.wikipedia.org/wiki/Gimbal_lock

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