If you using Ubuntu then I would install Synaptic. Once
that is up and running then use the search routine and find "astro" and
"astronomy" These two searches will bring you a lot of
choices. Here are just a few that I have used.
GTKam for my DSLR. Kstars, Stellarium, GCX and Gnome
Predict. Science-astronomy. Lynkeos,
astronomical-almanac, INDI (Instrument Neutral Device
Interface) and Celestia.
IRIS has a Linux version ? Its called SIRIL
Planets is a good program that works nicely in your browsers.
Live Linux Astro CD
QhyImager for Linux with the drivers for QHYT2,5,6,6Pro and 8 can be
PHD for Linux
INDI and Canon EOS DSLRs
Just like Windows version.
This requires IDL which is a large download but free once you sign up.
Remote Telescope System
Registax running under Wine.
For the use of DSLR there is always GTKam.
This software allows you to use your camera tethered to the computer
and it will also download the images to your hard drive.
This software is in the Ubuntu repository or you can download it from
Gimp is an 8 bit graphics package for .bmp, jpeg, png etc.
For 16, 32 and 64 bit image manipulation then there is Cinepaint.
For guiding there are 3 options that I know of.
PHD as above but this needs to use INDI (Industry Neutral Distributed
Qastrocam-G2. This software has been updated from the older Qastrocam
to include the QHY5 plus the webcam etc.
wxAstroCapture. Is capable of guiding using a webcam. Use version
better than 1.7 as it is some how hurt.
The last one I found is Lin_Guider. Capable of using the parallel
printer port for the long exposure webcams, video devices and of course
ImageJ a very capable program and is written in Java.
Plugins for ImageJ
AstroImageJ is again java based and is quite good.
You can also use the plugins above for this program as it is the same
program with added astro plugins etc.
SalsaJ this is the ImageJ but redressed for astronomy.
Regim another Java based program. This one is a stacking image program.
GCX is useful for stacking images and tweaking the individual frames.
For your DSLR have you tried to use GTKam ?
I use this for my Canon D1000
I also found that there is something called Redshift in the Ubuntu
This will turn your screen red gently over a period of time as night
Image below left is my screen without Redshirt turned on.
Image on the right is with Redshift turned on.
Getting EQDIR and EQTooth (bluetooth EQDIR ?) with EQMOD to work under WINE
latest find is for the EQDirect hardware to work under INDI from Pierre
You will have to first find a star and then sync but it works nicely