Larger images for
Messier 33 — The Triangulum Galaxy
Here are larger versions of my images of Messier 33 (M33, NGC 598, or the Triangulum Galaxy), a beautiful spiral galaxy in Trianulum and a member of our local group aproximately 3 million light-years away. See my blog post for more information. Exposure and instrument information is below.
Standard Color Image
This LRGB image was taken with a 12.5" Ritchey-Chrétien f/9.0 telescope (manufactured by RC Optical Systems) and an Apogee Instruments Alta U16M CCD camera through Light Buckets (LB-0003) on September 22, 2009 and September 26, 2009. Total exposure time was 66 minutes (L: 30 min., RGB: 12 min. each).
H-alpha Image
The H-alpha image was taken with the same instrument as the above image on September 26, 2009. Total exposure time was 45 minutes.
Color Image with H-alpha
This image combines the H-alpha data with the red data and the luminance data from the standard color image above in order to highlight the HII regions in M33. The image was taken with the same instrument as the above images on September 22, 2009 and September 26, 2009. Total exposure time is 111 minutes (L: 30 min., H-alpha: 45 min., RGB 12 min. each).
Even larger versions of these images can be seen here.
The prints of the full color images may be obtained and the image may also be viewed at my Astrophotography gallery.