C/2001 Q4 Neat (May 10)

clic for 60% size 1024 x 741 (234 kB)

About this Image

A first view to the comet Neat after dusk in 20 degree altitude at 19:50 UT;
It is close to its perihelion on May 15 and shows an extended coma but only a quite faint dust and ion tail. It is quickly heading direction north.
Below there is a second image from 20:05 UT

clic for 70% size 1403 x 935 (344 kB)


Technical Details


105mm TMB refractor with flattener at f/6.5

Mount MK-100 GEM
Camera SBIG STL-11000M at -20C, internal filter wheel
Filters Astronomik LRGB
Date May 10, 2004 19:50-20:05 UT.
Location Wildon/Austria
Sky Conditions mag 5 sky, good transparency, temperature 10 C
Exposure 19:55 UT: L:R:G:B = 300:30:30:30:30 seconds (30-sec sub-exposures);
20:05 UT: L:R:G:B = 60:60:60:60:60 seconds (60-sec sub-exposures), all binned 2x2.
Processing Image calibration, aligning, sigma average stacking, color synthesis, DDP in ImagesPlus; nucleus seperately aligned and added;
color balance, curves in Photoshop;
north is up;