On Fri, 30 Nov 2018 09:46:12 -0800 (PST), StarDust
wrote:

On Friday, November 30, 2018 at 6:12:36 AM UTC-8, Chris L Peterson wrote:
On Fri, 30 Nov 2018 00:23:53 -0800 (PST),
wrote:

Canon Rebel 300D was used for astro photography by many 10-15 years ago.
Some took out the IR filter or even installed cooling for the chip.
I heard, 6 mega pixel of the 300D is plenty pixels for photographing the sky!
Rebel XT DSLR can even do dark frame and subtrack after the photo was taken
Did any thing changed?
Are there better DSLR's now to do the same?

Almost every DSLR is better now. The sensor technology as improved
considerably. In particular, newer sensors have much greater dynamic
range and much lower thermal and readout noise. Those things are
critical to the quality of astroimages.

I have a Canon T5, very simple thing for astro photography don't have , like mirror lock up or bulb setting.
I think, the longest exposure it has is 30 sec.
Bummer!
T6 is the same!
Don't have the remote control, so maybe that has it?

There are also programs that can control DSLRs through their USB
connections. Some still work with old cameras, and can overcome the
typical 30-second maximum exposure. And yeah, some remote controls do
so by using the camera's bulb mode. If you're interested, check if you
can make a remote control. Especially with the older cameras, they
were often nothing more than a cable with a couple of switches on the
end. I made one for my 300D.