and finally, from hobart, ngc 300

[graham.hobart (Graham stevens)]

it's late, so here's a pic.
Toodle pip
graz

[graham.hobart (Graham stevens)]

added another set of data - some 30 x 4 mins dithered.
I think my grainy problem is due to using iso 800 darks with iso 400 lights. oops! Will try and reproc with better darks.
Graz

[midnight (Darrin)]

Once again tracking is pretty good.

ISO 800 should be ok but make sure you take the darks and stack in DSS via Median.

I am finding success with ISO 800 (hopefully drop back to 400 later on when tracking is really good) and after I finish, I set the camera to take about 25 darks outside while I go to bed.

Cheers,
Darrin...