Object Notes:

• Constellation: Ophiuchus
• Location: RA: 17h 02m 36.0s Dec: -26d 16' 00" Epoch 2000
• Size: 5.3 arc-minutes
• Magnitude: 7.2
• Type: Globular Cluster
• AKA: ngc6273

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.)

Exposure:

7 x 1 minutes Luminance unbinned
4 x 1 minutes each R/G/B 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:

4/09/05

Post Processing:

CCDSoft, CCDSharp, MaxIM DL, Photoshop CS