DSLR Imaging (Which one of these?)

[gfletcher]

Hi Guys

In your opinion which would be better for prime focus imaging through my 200P reflecting telescope?

Either a Canon 450D or a Canon 1100D ?

In the past when I have done Astro imaging I used a 350D but always had a problem with “Amp Glow”.

Your comments would be very helpful.

thanks

Graham

[+Ibbo]

I would say 1100d as it is lighter.

 

to help with amp glow use an external power supply like

 

https://www.ebay.co.uk/itm/External-power-supply-for-Canon-EOS-1100D-7-4V/253538902041?epid=3005797822&hash=item3b0818a019:g:nMgAAOSw08paw~05

[philjay]

Ah the old amp glow, I remember it well, but not with affection. Thank goodness modern dslrs are somewhat more well behaved.

1100d is nice and compact for a dslr. With a newt its going to be sticking out a ways and will need some imaginative balancing

Edited April 6, 2018 by philjay

[8472]

I've had both and the 1100d is a better camera.

 

Far easier for frame and focussing at ISO 6400. If memory serves, the 450D only goes up to 1600. 

[gfletcher]

Good point about the ISO .

I can see that the high ISO would be better for focusing and framing.

How do you ensure perfect focusing when imaging with a DSLR through a Newtonian?

[8472]

I use 10x  live view on a bright target (eg Sirius, the Moon etc).

 

I also made a Bahtinov mask for my 200p, although that doesn't get much use for imaging now I have a frac. 

[gfletcher]

How do you get 10X live view?

[philjay]

Select live view then zoom in using the same button you use for zooming in on image reviewing. Just keep pressing till you reach 10x

Edited April 8, 2018 by philjay

[8472]

Toggle the top right button on the rear of the camera in when in live view mode.

 

Oh, Phil beat me to it.

 

Edited April 8, 2018 by 8472

[gfletcher]

Thanks Guys