Focal Pointe Observatory
Astrophotography by Bob Franke

Home
Recent Images
Galaxies
Nebulae
   Natural Color
   Narrow Band
   H-Alpha
Clusters
Comets
Solar System
Observatory
Equipment
My Freeware
Tips & Tricks
Published Images
Local Weather
Terrestrial

 

Send Email

 

 

 

 

 

M15

 
 

Instrument

Celestron C11 @  F/6.1 (1705 mm)  1.087 arcsec / pixel

Mount

Losmandy G11

Camera

SBIG ST-7 with CFW-8A color wheel

Acquisition Data

9/20/05 & 9/22/05  Near downtown Seattle

Exposure

Lum     45 min  (15 x 3 min)
Red     60 min  (12 x 5, bin 2 x 2)
Green  60 min  (12 x 5, bin 2 x 2)
Blue    60 min  (8 x 7.5, bin 2 x 2)

Software

CCDSoft, FocusMax, PhotoShop CS, The DitherMat was used to diother the luminance layer.

Comment

North is to the top.