[multiweb (Marc)]

Originally Posted by Ric

Lovely images Marc, Ha really does these areas justice.

Cheers

Thanks Ric. Yeah there's plenty of Ha stuff around especially the tarantula.

Originally Posted by peter_4059

Both great images Marc. How do you achieve the same composition when you combine images from multiple sessions?

Thanks Peter. I do a rough polar alignment usually within 10' on each side of the pole then find a few alignment stars and finally sync the gemini on a bright alignment star within the area of the DSO. For the Tarantula I sync on Canopus and Betelgeuse for the HH. When I slew from the star to the DSO I'm usually spot on. The G11's great for that. Consistant. I never get exactly the same framing but it's +/- 10-20 pixels. Good enough not to have to crop too much. In CCD Stack I use CCDIS. It aligns based on star patterns so it will combine subs from each side of the meridian without a sweat.

Originally Posted by Garyh

Nicely detailed Ha shots there! Marc verry nice!

Thanks you very much Gary - glad you like them.