NGC7635 Bubble Nebula in [SII], Ha and [OIII] Light

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[SIII], Ha, [OIII] (RGB)

Above is the Hubble shot taken through the same filters

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remix color: Ha=Red, [OIII]=Green, [SII]=Blue (RGB)

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[SII] Only

 

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Halpha Only

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[OIII] Only

Taken on September 18, 19, and 20, 2003 from my backyard in Castro Valley, Ca. and from Plettstone, a private residence in the California Gold Country

Celestron C14 imaging scope @ f/12.46 (F=4430mm)

Finger Lakes Instrumentation IMG1024S imaging camera @-30C

RCOS Dichroic Beam Splitter for AO7/IMG compatibility

SBIG ST7E Guide camera controlling 

SBIG AO7 Adaptive Optics System

Astro-Physics AP1200GTO mount

Finger Lakes Instrumentation CFW1 Color Filter wheel

Custom Scientific Narrowband Emission Line Filters

   [Sulfur II]                      673.2nm 3nm FWHM assigned to Red

   Hydrogen alpha        656.3nm  3nm FWHM assigned to Green

   [Oxygen III]                 500.7nm  3nm FWHM assigned to Blue

6 exposures of 20 minutes each through [SII] (2 hours)

6 exposures of 20 minutes each through Ha (2 hours)

6 exposures of 20 minutes each through [OIII] (2 hours)

4 exposures of five minutes each through Optec IR-Blocking Blue filter

total exposure time 6 hours

Maxim DL 3.20 used for image acquisition, calibration, DDP, color combination

CCDSOFT 5.00.071 used for guiding/AO7 control

SIGMA Prebeta 11 used for darks, flats and image stacking

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