Single Sub M20

[nebulosity. (Jo)]

Originally Posted by Craige

Nice pictures Jo!

Cheers Craige

Thanks mate

Just sorting though some more of the pics and found another one from that morning, Omega Cen. 5 subs this one.

Cheers
jo

[BruceG (Bruce)]

Hey Jo, fantastic images. Imagine what you will be producing when you get that 1100 modded!!!
I recently got a pre-loved 1000d and intend to mod that one myself. Just the removal of the rear filter. i don't care about the autofocus because it will be only used for astro work. My modded 300d is awesome but doesn't play with BYEOS and as an old fella I need live view.

[nebulosity. (Jo)]

Originally Posted by BruceG

Hey Jo, fantastic images. Imagine what you will be producing when you get that 1100 modded!!!
I recently got a pre-loved 1000d and intend to mod that one myself. Just the removal of the rear filter. i don't care about the autofocus because it will be only used for astro work. My modded 300d is awesome but doesn't play with BYEOS and as an old fella I need live view.

Great news Bruce

Can't wait to hear how it goes, and see what you will be able to image with it.

Make sure you post some pics in the ATM/DIY forum.

With regard to removing the filter, I would probably just remove the whole filter assembly, this way you'll get rid of the AA filter as well. I haven't actually seen inside a 1000D but with the 350D the whole filter assembly can be removed with two screws (see pic) if your only going to use the camera on the scope removing the whole thing won't be a problem.

Oh, this won't work if your putting in a replacement filter though, which I don't think you are?

Cheers
Jo

[BruceG (Bruce)]

Removing the rear filter only leaves the front filter to block IR wavelengths, This is still needed to avoid stars becoming bloated due to chromatic aberration. The second reason for leaving the front filter in place is this is the one that has the sensor autoclean and also is a protective layer for the sensor. The rear filter removal will dramatically increase the sensitivity to Ha wavelengths even though the front filter is intact. The only reason some people install a clear filter in the rear position is to keep the autofocus accuracy (not considered as necessary for my use).