I was imaging this comet 31.10.2007 by Vixen VC200L VISAC Cassegrain (200/1800mm) and 6Mpix QHY8 color CCD Camera. Scope was mounted on EQ6 and off-axis guided on star by my TVGuider. Motion of comet is slow and guiding on star is not broblem. I tried to create composition that visualizes all components of this spectacular comet. On the image you can see outer C2 band emission coma (greenish) and inner dust coma, with enhanced structure of jets. I took 15x3min images for inner coma and 4x10min images for better appearance of outer faint coma and convert them together throuh HDR merge method. Inner coma structures were enhanced using Larson-Sekanina rotational gradient and inserted back to original image. (note: Zdenek Sekanina is native of Czech -
http://science.jpl.nasa.gov/people/Sekanina/ ). Images were taken about 12 km south of 100 thousand city Hradec Kralove at east of Czech Republic.
I'm not able to take next images, because there is cloudy now, and forecast looks badly for next day. If I'll have clears sky at comming days, will try to catch faint ion tail too, which this comet have, using fast newtonian astrograph.
Below you can see both native and enhanced look to comet.
http://foto.astronomy.cz/images/17PH...31_10_2007.jpg
http://foto.astronomy.cz/images/17PH...0_2007_enh.jpg
Full resolution images here:
http://foto.astronomy.cz/AstroForum/17PHolmes_norma.jpg
http://foto.astronomy.cz/AstroForum/...s_enhanced.jpg