Canon 40D First Light

[laser_jock99]

I purchased a cheap, used Canon 40D DSLR the other day and modified it to remove the IR filter using this guide:

http://www.lifepixel.com/tutorials/infrared-diy-tutorials/canon-40d-ir

I managed to get three 60 second subs before the battery gave out, but the initial results look promising as a cheap way into Ha sensitive one shot colour.

M42 Orion 3x 60s 8" F4 Newtonian scope (at F2.9) Canon 40D astro modified @ ISO800

[laser_jock99]

Just checking if Astrobin has less JPEG artifacts.....

[Daniel-K]

you really should start guiding jock that F2.9 is wasted taking 60 sec subs!

[PatrickGilliland]

For 60 sec unguided it is a great first light.

Guiding will be an immense improvement when you sort.

Few shorter/less stretched subs blended into the trapezium would be good.

Did you try some flats? Looks like this would also help.

Paddy

[laser_jock99]

For 60 sec unguided it is a great first light.

Guiding will be an immense improvement when you sort.

Few shorter/less stretched subs blended into the trapezium would be good.

Did you try some flats? Looks like this would also help.

Paddy

This was realy just a quick test from my light polluted garden site. More than 60s resulted in washed out images with the moon being rather near as well.

Hopefully when I get back to darker skies I'll be able to do some longer subs. The other issue I noted is the CCD to coma corrector distance is no longer correct as the Canon T2 mount is thicker than the Nikon one.

[PatrickGilliland]

Coma corrector will need sorting look forward to your future images.

Paddy