Observation by Ian Sharp: The Helix Nebula (NGC 7293)

Uploaded by

Paul Downing

Observer

Ian Sharp

Observed

2014 Aug 17 - 10:27

Uploaded

2014 Aug 17 - 10:32

Objects

The Helix Nebula (NGC7293)

Equipment

Apogee F16M-D9

Location

SSO Australia

Target name

Helix Nebula

Title

The Helix Nebula (NGC 7293)

About this image

A very deep image with about 36 hours of narrowband data (most exposures being 1800 secs).

The Ha data was very strong, so the normal Hubble palette was completely dominated in the green. So, Ian mixed the palette as follows:

Red = 50% Ha + 50% SII
Green = 85% OIII + 15% Ha
Blue = 100% OIII

The details of the equipment (at SSO, Australia) used to take this image are:

Optical Tube Assembly RCOS 12.5” F/9 (2857mm focal length) Carbon-Fibre Tube w/TCC2, PIR and FFC
Equatorial Mount Bisque Paramount ME
Imaging Camera Apogee F16M-D9 (KAF-16803) with 7 slot filter wheel
Imaging Camera Filters Astrodon Series II L,R,G,B, Ha (5nm), OIII (3nm) and SII (3nm)
Guide Camera MMOAG with SBIG ST-402ME

The system delivers a 44x44 arcmin FoV operating at .65 arcsec/pixel

Files associated with this observation

HELIX_Aug_2014_Sharp.jpg (169.7 kB)

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Ray Emery

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