NGC7293 Helix Nebula in [NII], [OIII] and Blue Light

[NII] = Red, [OIII] = Green, Blue = Blue

click image to enlarge, click here for highest resolution

Buy this and other selected images here

[NII] = Red, [OIII] = Green, [OIII] = Blue

click image to enlarge, click here for highest resolution

Taken on August 14, 2004 from Fremont Peak State Park near San Juan Bautista, California

AP155EDF f/7 (F=1085mm) imaging scope

Finger Lakes IMG6303E imaging camera at -37C

AP80/900MM guide scope

SBIG ST7E guide camera at -15C

Finger Lakes CFW1 filter wheel

AP1200GTO mount

OPTEC TCF-S Focuser

Custom Scientific 50mm Narrowband Emission Line filters (AR Coated)

   [Nitrogen II]        658.3nm  3nm FWHM 

   [Oxygen III]                 500.7nm 3nm FWHM   

Finger Lakes Blue filter

4 exposures of 20 minutes for [NII] and [OIII], 7 exposures of five minutes through Blue filter

Three hours and 15 minutes total exposure time.

Hit Counter