Couple of H Alpha Images

[avandonk]

Used an Astronomic 10nm H Alpha filter with the 300mm lens at F2.8. to get these images. For once the Moon was not interfering even though it was up for part of the night.

Details
Carina Canon 5DH, 300mm F2.8L at F2.8, 6x10 min at an ISO of 200, corrected for flats with IP, stacked with Registar and summed so it is equivalent to one sixty minute exposure.
Large image 1.2MB
http://members.optus.net/trlee8/CAR.jpg

Orion same details except it is 10x10minutes equivalent to one 100 minute exposure.
Large image 1.3MB
http://members.optus.net/trlee8/ORION.jpg

I am hoping to use this filter to get images of faint super nova remnants and other faint nebulae.

Bert

[Ric]

Very nice Bert, they are quite spectacular shots with the Ha filter, the Horsehead has come out quite superbly.
I think I may have to look into one one of these filters.

Looking forward to seeing more images.

cheers

[tornado33]

Hi Bert
Yes well done.
I take it that like me youd have to focus by non visual means as stars cannot be seen easuly through the filter? If moon is up I focus on that to get close then trial and error short images then adjust focus each time till stars are as small as possible.
Scott