If the summer solstice is R.A. 6h 0m 0s and the declination is +23 Degrees 27 seconds...?

Question

what are the coordinates at the winter solstice. I know that the R.A doesn't change with time but how does the declination change?

Answer 1

That's the location of the Sun at the summer solstice. Then the Sun at the winter solstice would be 18h RA and -23deg27min DEC.

If you just point your telescope up at some place in the sky and don't turn on the tracking motor, then the *declination* doesn't change but the RA does - by approximately one hour per hour (that's why they measure RA in hours). It's not exactly one hour per hour because of the difference between a solar day and a sidereal day.

Answer 2

The winter solstice is 180° opposite the summer solstice, at:

RA 18h 0m 0s
Dec -23° 27'

Answer 3

Declination changes approximately15 degrees per hour.