Experiments with an achro and dslr

[Trevor N]

Always good fun trying out new ways to image. I used a standard SW 120 achro for this image and a Canon 1000D. Some false colour present but a tweak in PS got shot of that. You can see Hadley Rille in the apps image and hopefully a hint of the rille down the alpine valley near Plato. I always use the tiny craters in Clavius to gauge seeing. Trevor

[Chris]

I wouldn't have guessed these were taken with an achro looking at them, very nice work on the processing and capture! I especially like the bottom image.

Chris

[Trevor N]

Thanks Chris. Achromats usually get a bad name regards imaging. Perhaps in some cases it's not justified.Trevor

[happy-kat]

That's great detail.

Did you remove the entire lens cap or just the centre bit?

With my little 80 on my first test on sea birds had no CA when just the centre cap was removed.

[nightfisher]

Trevor, very good as usual, you always get your focus razor sharp, some thing i struggle with for some unknown reason. 

Nothing wrong with using Achro fracs for Lunar imaging, first shot of the Lunar surface with my TAL had a tiny bit of colour, but took a while for me to spot it (about 3 months)

[todd8137]

Very nice and sharp man after my own heart

Pat

[Trevor N]

Thanks to all. I've never tried stopping down to get rid of CA.This was the full 120mm aperture. In some ways the dslr live view seems smoother than my imaging source but that may be wishful thinking. Trevor

[happy-kat]

stopping down increases the focal length (I think) be interesting to see what it does to the magnification

[nightfisher]

stopping down increases the focal length (I think) be interesting to see what it does to the magnification

stopping down increases the focal ratio, not length, so does not increase the magnification

[happy-kat]

Phew :-) I hoped I would get a post correction I was in bed last night thinking I have posted rubbish!

[michael.h.f.wilkinson]

Very nice and sharp