Object Notes:

• Constellation: Corvus
• Location - ngc4038: RA: 12h 01m 54.0s Dec: -18d 52' 00" Epoch 2000
• Location - ngc4039: RA: 12h 01m 54.0s Dec: -18d 53' 00" Epoch 2000
• Size - ngc4038: 3.4 x 2.0 arc-minutes
• Size - ngc4039: 3.3 x 1.7 arc-minutes
• Magnitude - 4038: 10.3
• Magnitude - 4039: 10.6
• Type: Spiral Galaxies
• AKA: Antennae, Ringtail Galaxies

Instrument:

Ritchey-Chretien 32" Telescope

Focal Ratio:

f7.2 (prime focus)

Camera:

SBIG STL-11000 CCD camera
(See product review in July, 2004 issue of Sky & Telescope magazine.)
with Astrodon Tru-Balance color filters.

Exposure:

9 x 5 minutes Luminance unbinned
3 x 5 minutes each R/G/B, all unbinned

Guiding:

Off-Axis with STV Autoguider (Santa Barbara Instrument Group)
(See product review in May, 2003 issue of Astronomy magazine.)
See Photo/Guiding Equipment.

Date:

3/06/05

Post Processing:

CCDSoft, CCDSharp, MaxIM DL, Photoshop CS