C/2007 W1 Boattini

Closest to Earth on 12 June 2008 at 0.21AU
Closest to Sun on 24 June 2008 at 0.85AU
Maximum magnitude 4.5 in June 2008


2008 July 04.82UT.
A stack of 3x2 minute exposures, Canon 300D digital camera.
200mm zoom lens, cropped image. ISO 800. FOV 4 degrees wide.
Naked eye visual magnitude 5.2


2008 June 12.35UT.
Left: a stack of 3x1 minute exposures, Canon 300D digital camera.
200mm zoom lens, cropped image. ISO 800. East is up. FOV 1 degree wide.
Right: a stack of 3x1 minute exposures, Canon 300D digital camera.
100mm zoom lens, cropped image. ISO 800. East is up. FOV 3 degrees wide. Delta Lepus (mag 3.9) is to the left of the comet.
Moonlight interference. Note the faint ion tail pointing towards Delta Lepus.
Comet was at low elevation and heading into the morning sky.


2008 June 2.42UT.
Left: a stack of 2x2 minute exposures, Canon 300D digital camera.
200mm zoom lens, cropped image. ISO 800. South is up.
Note NGC 2467 above the comet (star cluster with associated nebulosity)
and M93 to the lower left.
Right: 10x10 sec, C11 SCT at f/3 + MX7c ccd.

visual observation
2008 June 2.40 UT: m1=4.9, Dia.=20', DC=4...7x50mm B
Comet appears as a large circular haze with no apparent tail visible.
Comet was faintly visible to the unaided eye using averted vision.
Average sky transparency with limiting magnitude about 5.5 to 6