Object Notes:

• Constellation: Cepheus
• Location: RA:21h 41m 18.0s Dec:+66d 05' 59" Epoch 2000
• Size: 2.7 x 2.7 arc-minutes
• Magnitude: 11.5
• Type: Diffuse Nebula/Open Cluster
• AKA: OCL 240

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:

20 x 5 minutes Luminance unbinned,
4 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:

10/07/04, 10/26/05

Post Processing:

CCDSoft, CCDSharp, MaxIM DL, Photoshop CS