where to get RA/DEC locations?
Posted 07 December 2012 - 07:41 PM
Posted 07 December 2012 - 08:28 PM
Posted 08 December 2012 - 10:13 AM
Posted 08 December 2012 - 04:18 PM
Posted 08 December 2012 - 04:22 PM
Posted 08 December 2012 - 06:24 PM
Phones, tablets, and programs on them are generally NOT accurate enough to use those as pointing devices. IF the phone or tablet or laptop is linked to and controlling the telescope, THEN astronomy programs on board would be accurate enough to control the pointing of the scope.
Is there a site or program where I can search for a given object and get RA/DAC? I don't use Stellarium because even in my 1 year old comp all it does is strobe so I don't even bother. What about other ipad/iphone apps? Are coordinates found on most of those accurate enough to point a scope at?
However, if it's a computerized scope, which is what's necessary to attach an electronic device in order to control the scope, it has a hand controller that will find every object, so attaching a computer is merely complicating what was simple.
Additionally, the use of a phone, tablet, or laptop in the field will destroy your night vision and prevent you from seeing some of the objects you are trying to find. If you cover the screens and reduce the brightness significantly, they can be used to control the scope, but again you're duplicating the function of the hand controller with the scope.
And if the telescope is not computerized, the accuracy of finding objects using a phone or tablet is usually, at best, about +/- 3 degrees, which isn't accurate enough to find anything.
I recommend a basic star atlas and a red LED flashlight for the field. The Pocket Sky Atlas or the Tirion Sky Atlas 2000.0
are both excellent for the field. You can use the internet for information about the objects before you go out so you have a small list of objects to look for.
You can also download my list of the 500 Best DSOs, all viewed with my 5" scope:
It's attached to the post.
Information on the list:
Object Common name
Number of stars
Brightest star magnitude
Class of object
Distance in LY
Posted 09 December 2012 - 01:17 PM
SG6 an astronomy refrence book will have objects such as asteroids that move?
I have used Heavens-Above to track the brighter ones. It has been accurate enough for me to track Vesta and Pallas.
Posted 09 December 2012 - 02:17 PM
The learning curve for this software isn't steep at all, and it is decent for printing your own charts as well. Here is a link to the download:
Posted 10 December 2012 - 08:28 PM