Focal Pointe Observatory
Astrophotography by Bob Franke

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NGC 891

Click the image for fullsize wide field view

 

Instrument

Celestron C11 @  ~f/10.5 (~2930 mm fl) 1.27 arcsec / pixel.  Shown resampled to 1.58 arcsec / pixel.  Click the image for a full size wide field view.

Mount

Paramount ME

Camera

SBIG STL-11000 w/ internal filter wheel, AstroDon Filters

Acquisition Date

10/14/07 to 10/18/07  Chino Valley... with CCDAutoPilot3

Exposure

Lum    240 min.  (48 x 5 bin 2x2)
RGB    120 min.  (24 x 5 bin 3x3) each

Software

CCDSoft, Sigma-Clip, Photoshop CS w/ the Fits Liberator plugin, Paint Shop Pro,and Noel Carboni's actions

Comment

North is to the top

Discovered by William Herschel in 1784.  NGC 891 is at a distance of 8.9 Million Light Years.

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Instrument

Celestron C11 @  F/7.2 (2000 mm fl) 0.93 arcsec / pixel

Mount

Losmandy G11

Camera

SBIG ST-7 with CFW-8A color wheel

Acquisition Date

3/19/04 to 4/2/04  Near downtown Seattle

Exposure

Lum    555 min.  (37 x 15)
Red    120 min   (8 x 15 bin 2x2)
Green 105 min.  (7 x 15 bin 2x2)
Blue    150 min.  (10 x 15 bin 2x2)

Software

CCDSoft, Sigma-Clip, Photoshop CS w/ the Fits Liberator plugin & Iris