Mosaics pt 2

The base for all our tutorials, be it how to polar align or master astro imaging

Moderators: hawk_eye1975, budgetastro, martin_h


TUTORIALS SECTION

This section is only for the posting of actual tutorials, either single post or multiple, to ask questions or comment on a tutorial, please use the TUTORIAL DISCUSSIONS section where you will find a topic titled for each topic posted here, it just helps stop the topics becoming convoluted and lets the tutorials flow properly. If you post a tutorial, please also post a topic into TUTORIAL DISCUSSIONS with the same title.

Thanks.

Mosaics pt 2

Postby martin_h » Tue Aug 23, 2011 1:17 pm

Now that you have masterd 2 panel mosaics :D time to move on to 3 or more!! :-?

The hardest thing about BIG mosaics is keeping track of where you have got to and where you need to go next. EQMosaic is one way but not everyone has it, so this is what I do.
On an A4 sheet draw a rectangular grid and number the rows 1,2,3,4 etc and the columns A,B,C etc or whatever you like just to keep track of what is going on.
Mark the centre of the grid with the first image 'E4' or whatever it is. now what I do is to note the RA and DEC coordinates and put them in the grid.
The first image is usualy easy because it starts with a known object and is easy to find with GOTO but when you move away from this its not so easy to find again. You can get the coords from the handset or what ever you are using to drive the mount, so that if you have to go back to that spot you will be in the ballpark at least, and not have to hunt around trying to find the spot again.
When I save the images from capture I put them in a folder labled with the paper grid coordinates, so the first one might be 'Bubble E4' and when I move down a frame the next one will be 'Bubble E5' and so on.

When I need to go back to a position or start a new one on a different day I go back to the last good position and then load a previous capture and scale it to be the same as the capture image, take a good look at that image and try to identify an object or grouping of stars or a huge star(easy!)
Put the Reticule over that position and start the looping captures and look for that object on the screen, once you have found it move the mount to get it under the cross hair. Now either carry on with the capture or use that to get to the next frame on the list.

Hi, you are viewing as a guest, You can only see this first post in this topic. if you sign up you get access to other goodies you can't even see as a guest, including video tutorials on imaging and processing, scope modifications and even member discounts on gear!

So, give us a try, what have you got to lose! Oh, and if you stay, when you reach 50 posts you get access to MORE goodies! What are you waiting for!

User avatar
martin_h
Black Dwarf
 
Posts: 2412
Joined: Thu Mar 24, 2011 5:40 pm
Location: Grimsby UK

Return to TUTORIALS

Who is online

Users browsing this forum: No registered users and 1 guest