Comet Q4                 Click on photo to return to 'Comets, Asteroids and things'                                   Home
C/2001 Q4 (NEAT)
This is a composite of 20 exposures centered on the comet. The comet has moved, relative to the stars, quite a bit
in the 2 hours span of this sequence. The shells, streamers of dust and the gas around the nucleus are real.

Distance from Earth: 1.140393  astronomical units.
Distance from Sun:   1.073148  astronomical units.
Heliocentric: l:-157.3794 b:38.1091  r:1.0731  
Magnitude: 4.1  
Rates ra:   0.0184 dec:   0.0149 (arc-secs/sec)
RA: 10h 01m 28.9s  Dec: +50°20'03"
RA: 10h 01m 11.7s  Dec: +50°21'20"  (Epoch 2000)

Photo Specifications:

16" F/4.87  Newtonian , ST-8E, CFW8     06/12/04    Temp. = -15 C

Filter
Exposure time
Number of exposures
Binning
Luminance
2 min
20
1x1
Red
Green
Blue
Other








Processing:   MaxIm; DDP, align, stretch, combine;