NGC 6334 - Cat's Paw - long exposure

[jsmoraes]

yet trying long time exposure, now with Cat's Paw Nebula
In the enhancement I used 8 m 30 s of B/W with pseudo red filter from Canon to boost red channel in Photoshop.

(no real filters, no coma correction, no guinding)

GSO 305 mm - Canon Rebel XT - iso 1600 - 20 m 59 s 42 frames (30 s)

medium scale
http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_1k.jpg

large scale
http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_2k.jpg

[jsmoraes]

And with more data.

GSO 305 mm - Canon Rebel XT - 1 h 4 m - 128 frames of 30s

large scale

http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_1kcopy.jpg

http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_2k-1.jpg

[tilbrook@rbe.ne]

Hi Jorge,

That's worked really well!

Never thought of trying so many short subs, but that's done the job.

Great work!!

Cheers,

Justin.

[jsmoraes]

Thanks, Justin. In fact, the total number of frames was got in two days: 06 e 09.
I need use short time of subs because I haven't guiding yet. And I use a GSO 305 mm over a NEQ6 mounting, on its weight limit. Therefore there aren't a coherent PE file to generate a PEC.

With 30 s subs I lose 25 % of total frames, because of any minimum drift

[Ross G]

Nice capture Jorge.

Ross.

[jsmoraes]

Again, thank you Ross. And now, my last adding data. Two different graphic enhancement.

GSO 305 mm - Canon Rebel XT - 1 h 28 m - 186 frames x 30 s
medium scale

http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_1k_186f.jpg

http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_1k_186f_a.jpg


large scale

http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_2k_186f.jpg

http://i1063.photobucket.com/albums/t510/jsmoraes/DSO%20-%20Long%20Exposure/ps_ngc6334_2k_186f_a.jpg