M76 Little Dumbbell Nebula unfiltered from Stinger 450mm f/12.6 classical cassegrain used at f/7.4 (3366mm) and FLI ML4022

click image to enlarge, click here for higher resolution

click here for full resolution

Taken on September 17 and 18, 2010 from my ranch in the California Sierra Gold Country

Stinger 450 Classical Cassegrain 450mm f/12.6 used at f/7.3 (3366mm)

Astro-Physics AP1200GTO mount

Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.4

Finger Lakes Microline ML4022  imaging camera operated at -25C

Robofocus

Finger Lakes CFW7 Filter wheel

SBIG ST7E guide camera

38 exposures of 5 minutes with no filter 

3 hours 10 minutes total exposure time 

With [SII], Halpha and [OIII] data from 2006 (see S2/Ha/O3 data source image)

click image to enlarge, click here for higher resolution

click here for full resolution

Custom Scientific 3nm FWHM Ha filter (50mm diameter)

Custom Scientific 3nm FWHM [SII] filter (50mm diameter)

Custom Scientific 3nm FWHM [OIII] filter (50mm diameter)

15 exposures of 30 minutes through Halpha filter

21 exposures of 30 minutes through [SII] filter

15 exposures of 30 minutes through [OIII] filter

25.5 hours total exposure time for emission line color data

3 hours 10 minutes total exposure time for luminance

28 hours 40 minutes total exposure time

Hit Counter