Caldwell 27 - NGC6888 - Crescent Nebula

Final Processing

Second Processing

Date: 2009-06-19/20/23/25/26
Location: South Common Observatory
Scope: Celestron C8 @ F/6.3
Camera: Starlight Xpress SXV-H9
Guide Scope: Astro Professional 102ED
Guide Camera: SX Guidehead
Exposure (Ha as Red): 28 x 221 seconds - 1x1
Exposure (OIII as Green): 27 x 246 seconds - 1x1
Exposure (Hb as Blue): 16 x 200 seconds - 1x1

First Processing

Date: 2009-06-19/20/23/25/26
Location: South Common Observatory
Scope: Celestron C8 @ F/6.3
Camera: Starlight Xpress SXV-H9
Guide Scope: Astro Professional 102ED
Guide Camera: SX Guidehead
Exposure (Ha as Red): 28 x 221 seconds - 1x1
Exposure (OIII as Green): 20 x 228 seconds - 1x1
Exposure (Hb as Blue): 16 x 200 seconds - 1x1


Date: 2009-06-19/20/23
Location: South Common Observatory
Scope: Celestron C8 @ F/6.3
Camera: Starlight Xpress SXV-H9
Guide Scope: Astro Professional 102ED
Guide Camera: SX Guidehead
Exposure (Ha as Red): 33 x 191 seconds - 1x1
Exposure (OIII as Green): 30 x 212 seconds - 1x1
Exposure (Hb as Blue): 18 x 200 seconds - 1x1



Date: 2008-11-25
Object: NGC6888 - Crescent Nebula
Scope: Astro Professional 102ED @ F/7
Camera: SXV-H9
Guide Scope: Williams Optics ZS66
Guide Camera: SX Guidehead
Exposure (OIII):  9780 seconds
Exposure (Ha):  5115 seconds





A further reprocessing of this image.



Attempt 2 at processing.  This image does not use the Clear Luminance and Ha data blended.  Instead, the Ha data is used alone to provide the Luminance layer.




Date: 2008-10-21
Object: NGC6888 - Crescent Nebula
Scope: F5 GSO 150mm Newtonian
Camera: SXV-H9
Guide Scope: Williams Optics ZS66
Guide Camera: SX Guidehead
Exposure (L):  10 x 300 seconds
Exposure (Ha):  10 x 300 seconds
Exposure (R):  10 x 150 seconds
Exposure (G): 10 x 150 seconds
Exposure (B):  10 x 150 seconds

© Richie - 2008