SH2-155 by Mario Bautista

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	Mario C. B. Bautista, MD

SH2-155

The Cave Nebula in Hydrogen Alpha.

Color version 2011: http://www.pbase.com/mariobmd/image/139088171
More info: http://en.wikipedia.org/wiki/Cave_Nebula
My 2009 version: http://www.pbase.com/mariobmd/image/116950901

Taken with a Takahashi TOA130 NFB with 67 Flattener and QSI 583wsg with Astrodon 5nm Halpha filter. Image scale of 1.1 arcsec/pixel.
Guided with a Mini Borg 50mm and SBIG STi.
AP1200 GTO Mount
Exposure time:Halpha: 420 mins with 30 mins subexposure.
Softwares: CCDAutopilot,Sky6 Pro,MaxIM DL,Focusmax, CCDNavigator, CCDStack and Photoshop CS2
Taken on October 8 and 9, 2011 in Jackson, Ohio

other sizes: small medium large original auto

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