untrackable

[leenewtoastro]

are there any regions that you can't track or require "not the norm" settings?

the ball park is the area underneath polaris from the north hemi

[david o]

I'm sorry Lee, I'm not sure that I follow.

Could you explain a little of the background to the question and, maybe, what mount you are using please ?

[Nexus 6]

not sure if its to do with southern latitude objects that will still be on the scope's menu lists? just a thought.

[spacemanblue]

I've been looking for M51, but the scope is so high on the mount it's hard to maneuver, and M101 is still on my wish list, I know am slow.

[John]

I've been looking for M51, but the scope is so high on the mount it's hard to maneuver, and M101 is still on my wish list, I know am slow.

What scope do you have ?.

[leenewtoastro]

yes should have given better description. my bad.

so the stars "appear" to revolve around polaris and for the large part for me from the northern hemisphere the stars move east to west. but when looking north all stars below horizontal of polaris move west to east.

now my RA axis with scope attached has roughly 240° of movement.

so i can only track stars 120° either side of a imaginary vertical through polaris.

is this right?

cg5-sw130p

[yeti monster]

Wait 6 months?

[Bizibilder]

Yes Lee - you are quite right. If you have a mount like a Dobsonian (altazimuth) then you can point to any part of the sky ('cos it goes 360° round an round and from 0°-90° up and down. However equatorial mounts have aproblem in that for all of them there is a region of the sky that is inaccessable at any point in time as the mount will get in the way. As Yeti says - wait long enough and the Earth's rotation will bring those inaccessable regions back into a position where the mount no longer prevents you from observing those objects.

[leenewtoastro]

yeh. got something right

thx all