Baader UHCS filter on 50mm lens

[tornado33]

Hi all.
Due to the wind and high cloud/haze, I didnt try any through the scope imaging tonight. Instead, I wondered what would happen if I tried shooting through my UHCS filter on a 50mm lens. The filter didnt fit so I carefully just sat it on the existing UV lens filter. I wasnt expecting much in the poor sky conditions but gee, check this out
http://www.users.on.net/~josiah/baad...ersmalljpg.jpg
2 x 5 mins IS0 800 at F4. Look at how bright the emission nebulae regions are
The tail of scorpio http://www.users.on.net/~josiah/baad...aadersmall.jpg
same settings.
An added benefit is that the filter seems to filter out not only light pollution but the light that causes colour flaring in the 50mm lens.
I must try this again under better skies.
Scott

[beren]

Wow thats just great , beautiful shots

[iceman (Mike)]

Awesome shots Scott, pinpoint stars.. I can tell you really love that filter, it's brought new life to your imaging.

I just love widefield shots like that, well done.

[Dennis]

Hey Scott

Those are great images. Nice and sharp for f4. What make is the lens? I assume wide open would be f1.8?

Cheers

Dennis

[tornado33]

Thanks
Its a standard Canon EF lens, F1.8. I did my first shot at F1.8 and there was some coma at the edges but not as much as Id get with no filter, I think that the filtered light helps cut down the coma. Manual focus was near impossible as the filter made starts too faint, instead it was by trial and error, taking a few short exposures @f1.8, moving the focus very slightly each time till stars sharp. I then stopped down to F4.
Scott

[atalas]

Great shots again Scott ! very sharp indeed

Louie