I hope you enjoyed the image, Tristan. I am the author of it.

Richard Crisp



"Tristan DiLapo" wrote in message
...
Hi Mike,

Check out this image of M27 in Ha. Ten hour exposure ... very
impressive. Here's the details:

"I shot this image of M27 over the past few nights through Ha, [OIII]
and a Blue filter.
I had 5.75 hours of Ha, 3.25 hours of [OIII] and one hour of Blue.
The emission line exposures were 15 minutes and were exposed through
Custom Scientific 3nm FWHM emission line filters.
The camera is a Finger Lakes IMG1024S "Dream Machine" which uses a
Tektronix TK1024 sensor.
An SBIG AO7 was used along with an SBIG ST7E and an RCOS Optical Systems
Dichroic Beam Splitter to guide and AO-correct the FLI camera.
The imaging scope is a Celestron C14 operating at f./11 (3910mm Focal
Length) mounted on an Astro-Physics AP1200GTO mount."

http://www.rdcrisp.darkhorizons.org/...hao3b_page.htm

Tris