Pickering's Triangle in The Veil (Ha, [OIII], [SII])

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RGB= Ha, [OIII], [SII]

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Ha + [OIII] + [SII] = Greyscale

 

Taken on May 29, 2004 in my backyard in Castro Valley, Ca.

AP180EDT f/9 imaging scope used at F=1620 (f/9) (first light for deep sky)

AP80/900mm guide scope

AP1200GTO mount

FLI IMG1024S  imaging camera @-35C

FLI CFW1 Filter wheel

FLI DF2 Digital Focuser

ST7E guide camera @ -15C

Custom Scientific [SII] filter 673.4nm/ 3nm FWHM

Custom Scientific [OIII] filter 500.7nm/3nm FWHM

Custom Scientific Ha filter 656.3nm/3nm FWHM

Five exposures of 600 seconds for Ha and [OIII]

Four exposures of 600 seconds for [SII]

Total exposure time 2 hours 20 minutes

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