# Thread: Measuring Distance

1. ## Measuring Distance

Ok, I recently got a Rigel Quickfinder (which I'm yet to be able to test due to clouds). My question is how can I measure distance on a star chart in order to use it? I know it has a .5degree and a 2degree circle, so I understand how to actually measure the sky with it. So for example, let's say I wanted to determine how many degrees object x is from object y. How would I do this?

2. I meant to mention that I was wanting to measure the distance on either stallarium or Kstars. That probably helps since every map is different

3. Here is a mod by a ghswen here on the forum. It allows you to put telrad circles on stellarium. You could use them to figure out the distance between stars.

Stellarium Program mod for Telrad Octile

4. I have never used Kstars, however Cartes du Ciel projects a Telrad circle on to the star chart -- many star charts also have a plastic overlay with circles that can be placed on the chart for measurement. You could make your own using a protractor with different size "holes" in it, and a piece of clear plastic.

5. ## The Following User Says Thank You to Joe Lalumia For This Useful Post:

mplanet62 (08-22-2010)

My understanding is that distances are not something of concern for practical observer. Angular coordinates are used in astronomy to find whatever we need to see. The difference between two angular coordinates will give you angular distance if you wish. And finder will have not much to do with how you use it. Your mount will. For example, to get to Jupiter from the Moon on celestial sphere, you will need to turn your scope certain amount degrees in one direction, and another amount in perpendicular direction. Applies to both AZ and EQ mounts - but different ways. To find angular coordinates of sky object in say Stellarium, just point and click on it. You'll see the data, which includes coordinates.

Clear skies,
Michael

7. Don't you just love it when you get such nice detailed non-answers?

Here's an actual real answer for you:

In KStars:

Tools: Calculator: Coordinate Converters: Angular Distance : Interactive Mode

Or:
View: Zoom to Angular Size

Or:
Position Cursor, Right Click, Select "Angular Distance To...", position cursor, right click again, select "Compute Angular Distance", look at bottom left of window frame for the angular distance you've just spanned with the dotted cursor line

8. ## The Following User Says Thank You to alsetalokin For This Useful Post:

Joe Lalumia (08-22-2010)

9. Oh, I forgot to mention, in KStars:

Settings: FOV Symbols:

You can choose Telrad and several others, and even put in your own.

10. ## Stellarium angle finder

IF you want to find the angle between two points in stellarium:

go to Configuration, Plug-ins, Angle Measure and set to Load at Start Up.

You will then have an angle button to use on the bottom tool bar.

Have fun.

11. ## The Following 3 Users Say Thank You to Arny Moots For This Useful Post:

dmbryan (08-23-2010),Joe Lalumia (08-22-2010),mplanet62 (08-23-2010)

12. Thanks for the replies everyone. The advice should prove to be very helpful.

13. Originally Posted by Arny Moots
IF you want to find the angle between two points in stellarium:

go to Configuration, Plug-ins, Angle Measure and set to Load at Start Up.

You will then have an angle button to use on the bottom tool bar.

Have fun.
I don't have a plug-ins option in my config window. Running 10.2

I had it once, but lost it trying the various upgrades, none of which would run for me.

Went to Dell site to upgrade drivers, got into a logic loop, gave up.

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