declination axis

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declination axis

The axis at right angles to the polar axis about which a telescope on an equatorial mounting is turned in order to make adjustments in declination. The optical axis then follows a particular hour circle across the sky.

Declination Axis

 

one of the axes of an equatorial mount of a telescope. The declination axis is perpendicular to the polar axis. The telescope is rotated about the declination axis as it is directed to a given point on the celestial sphere.

declination axis

[‚dek·lə′nā·shən ‚ak·səs]
(engineering)
For an equatorial mounting of a telescope, an axis of rotation that is perpendicular to the polar axis and allows the telescope to be pointed at objects of different declinations.
References in periodicals archive ?
While PHD2 doesn't need the autoguider camera aligned with right ascension and declination axes to do its job, it does help you when diagnosing problems after a night of imaging.
This German Equatorial Go To mount features 180tooth aluminum alloy gears and brass worms driven by precision stepper motors in both right-ascension and declination axes.
The mount features a 36-inch-diameter drive ring and heavy-duty 2-inch ball bearings on both declination axes for smooth yet accurate slewing.
The mount has 5-inch-diameter bearings at the top of the polar and declination axes.
Locks on the right-ascension and declination axes allow the equatorial head to be swung about freely, but there are no manual slow-motion controls--any fine-tuning of the mount's position must be done electrically with the mount powered up.
In addition, the mount has been purposely designed so that users can also route their own cables through the polar and declination axes.
It also knows how to cycle the slewing of the right-ascension and declination axes on and off during a Go To move to keep the telescope from hitting the mount.
With the scope polar-aligned, I engaged the conveniently located clutches on the right-ascension and declination axes and powered up the mount.
Late in 1932, a 12-inch Newtonian and the Schmidt camera were added to outrigger plates extending from the declination axes of his new 15-inch telescope mount, which is the one now owned by Allan Guthmiller.