[trufflehunter (Wayne Robinson)]

My first post on the upgraded forums. Great improvement. Thanks to all involved!

Just playing around with Photoshop to start to get the stacking process sorted out. I was put off for a while because of reports that photoshop doesn't offer an 'additive' blending mode. It does offer a 'screen' mode, though, which is what I used here and it seems to work. I've also hit on a nice, easy, nifty set of photoshop steps to remove field derotation from a series of short exposures with an alt-az driven mount. I might work on a little 'how-to' when I've polished it up a bit!

After stacking, I flattened the image and adjusted the levels.

I'd love to hear from anyone who uses photoshop for stacking, especially regarding the 'screen' layer blending mode. Is there a better alternative?

Early days yet... still trying to make a "silk purse out of a sow's ear". These were taken a few weeks ago with the moon up.

Omega Centauri: 4 x 30secs
Jewel Box: 2 X 30secs
Nikon D70, iso 1600 with noise reduction on
Meade LX90, F10, fl 2000mm, alt-az mode