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M48 - Open Star Cluster in Hydra
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Copyright 2008 Hap Griffin
M48 is an open cluster of some 80 stars extending over an area 25 light years in diameter.
M48 lies
at a distance of 1500 light years.
Date/Location:
February 2, 2008 Griffin/Hunter II Observatory Bethune, SC
Instrument: Canon 40D (modified IR filtering) Digital SLR through
10" Newtonian w/MPCC
Focal Ratio: f/ 4.7
Guiding: SBIG ST-401 through Orion ED80
Conditions: Cold and clear
Weather: 32 F
Exposure: 30 minutes total (30 x 1 minutes @ ISO 800)
Filters: Baader UV/IR block internal to camera
Processing: Focused and captured, RAW to TIFF conversion,
flat frame calibration, Digital Development, resizing and JPEG conversion in ImagesPlus. Color correction in Photoshop
CS2.