Eta Carina in 7 Nm Hydrogen Alpha

[tornado33]

Hi all
Tested out the test Baader Hydrogen Alpha filter on Eta Carina last night before it set.
http://www.users.on.net/~josiah/baad...ha%20small.jpg
2 x 20 mins ISO 1600, dark subtracted, only red channel used. Its the deepest ever shot ive taken of Eta Carina.
Its the first time Ive fiited the filter to the telescope, as its a test one its not in a mount and was just sitting in the focuser(I was careful it didnt fall out). Even the star Eta Carina wasnt visible in the viewfinder, but moving to a brighter star allowed be to focus on it, (Star appeared blood red), then moved back to Eta carina locating it only by the finder, however a 1 minute exposure showd Eta carina itself though no nebulosity. Then I took the first 20 minute shot not knowing what to expect. Red nebulosity covered the view, it was everywhere, so I moved the scope a few pixels, so as to help reduce noise with such long exposures (My 300d is not modified), and took a 2nd shot to stack, to make the final image
Scott

[[1ponders] (Paul)]

WOW!!!! Gotta love that filter Scott. Brilliant shot.

[tornado33]

Thanks. yeah I didnt know what to expect with it, couldnt see anythign through it except mag 1 and 2 stars, so I focussed on one of those then had to use the finderscope to actually compose the image. Its amazing what narrowband filters can do
Scott

[atalas]

Another nice shot Scott !

Louie