Object Notes:

• m46
• Constellation: Puppis
• Location: RA: 07h 41m 47.9s Dec: -14d 49' 00" Epoch 2000
• Size: 27.0 arc-minutes
• Magnitude: 6.1
• Type: Open Cluster with Planetary Nebula
• AKA: ngc2437
• ngc2438
• Constellation: Puppis
• Location: RA: 07h 41m 47.9s Dec: -14d 44' 00" Epoch 2000
• Size: 65.0 arc-seconds
• Magnitude: 11.0
• Type: Planetary Nebula
• AKA: PK 231+4.2

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:

12 x 1 minutes Luminance unbinned
9 x 1 minutes each R/G/B unbinned
(Mosaic of two images)

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:

2/02/05

Post Processing:

CCDSoft, CCDSharp, MaxIM DL, Photoshop CS