Seeking help with EOS 1100d camera

[joss]

Good evening everyone

I am just getting into astrophotography and don't really know a lot, i'm using a 14" reflector on a Dobsonian mount with GOTO.

Recently i have purchased a cannon EOS 1100D SLR camera and a T-ring. The problem i am having is i cant get it to focus on anything, i have even tried random objects about the house. I didn't buy any lenses as i intend to use the T-ring to connect it straight to the telescope, from what i have seen online this kind of set up should work but i don't know how to make it work if it won't focus, could anyone help?

thanks joss

[rl]

No point in trying objects in the house....the target needs to be sensibly at infinity or the image will be formed too far back to get a focus.

Depending on which 14" scope you have, you may need to add or remove spacers in the focuser.

Dobsonians are not that useful for astrophotography because you will need a tracking mount. You will be able to get prime focus shots of the moon because the exposure time will be very short depending on the lunar phase. 

[happy-kat]

with a light bucket like that you would be surprised at what DSO you could capture, several members with large reflectors on altaz tracking mounts here.

https://stargazerslounge.com/topic/228101-the-no-eq-dso-challenge/page/160/

you'll need to work within the capabilities the mounts has and may find 20 seconds your restriction on exposure length

Edited February 7, 2022 by happy-kat

[alacant]

On 07/02/2022 at 20:58, joss said:

cant get it to focus on anything

Hi

Post a photo to show us how you have the camera attached to the focuser.

 

 

[joss]

hi, sorry for taking so long to reply but i managed to solve the problem by messing with the camera and kinda forgot i had posted a question. i have attached an image i took during my first session, while it won't make the cover of national geographic i'm pretty pleased for a first attempt. I would like to boost magnification for things like the whirlpool galaxy but not sure whether to go for a T mount barlow or try A focal. For a focal i don't really know what i need to use a DSLR camera for it, most guides are for digital cameras.