Hi Bill and All,

First of all, happy new year!
Thanks Bill for this very useful feature; nevertheless, I have some trubble to run it.
I downloaded the constlin.zip, and unzipped it in my Guide8 folder (I have all the two CDs and the last uddate - 06 june 2007 - on my hard drive.)
Then I modified the constlin.txt of the Guide folder very slightly, to give it a try, using Textpad. I changed only the lines of And through that way:
Original lines:
------------------------
gam and 0
bet and 1
del and 1
alp and 1
pi and 1
mu and 1
and 51 1
bet and 0
mu and 1
nu and 1
---------------------
new lines:
-------------------
gam and 0
bet and 1
del and 1
alp and 1
pi and 1
mu and 1
and 51 1
-----------------
Then, I copied COMPBSC4.dat from the BSC folder into the Guide folder. (The original COMPBSC4.dat remaining in the BSC folder)
Afterwards, I ran constlin.exe by double clicking on it. The black window appeared for a few tenth seconds, but nothing, letters or numbers, or anything else appeared in the window. It stayed a "black blank window".
I shut Guide, but when I ran Guide again, there was no changes with the And constellation lines. Moreover, the date of the last modification of CONSTLIN.OVE of the Guide folder remained unchanged, 30 sept 2002.
What have I missed ?

Thanks


Bertrand

----- Original Message -----
From: Bill J Gray
To: guide-user@yahoogroups.com
Sent: Monday, January 14, 2008 11:16 PM
Subject: Re: [guide-user] Constellation asterisms and figures.


Hi Dario,

Regarding the first: I hadn't previously provided a way to do
this, but if you look at

http://www.projectpluto.com/random.htm#constell_lines

you will see a little program provided that will do the job,
and discussion of how to use it.

Regarding showing images in the background: I don't have an
immediate answer for that one. Guide _does_ have an elaborate
method for showing black-and-white images from FITS files, but
it doesn't do color (*) and has distortion problems at larger
scales. It's the classic problem of Failing to Plan Ahead; I
was thinking of small CCD and RealSky/DSS images, not wide-field
color images.

-- Bill

(*) Of course, Guide _does_ do color images, sort of: you
can download a "red" DSS image, then tell Guide to add a "blue"
image as a blue overlay. As the second image is drawn, it
just replaces the blue channel of whatever was previously
drawn. But it's slow and DSS-specific; you wouldn't normally
get separate images like that.





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