Object info

M33, The Triangulum Galaxy is quite small compared to its big apparent neighbor M31. M33 is located in the constellation Triangulum, and at 3 million light years it is the most distant object which can be seen without any optical aids (from a very dark location).

Processing

DSLRFocus was used for focussing. All separate frames were calibrated, aligned and stacked in ImagesPlus 2.8.
"Dynamic Background Extraction" (DBE) was done in PixInsight.
Photoshop CS2 was used for further processing - curves adjustment, levels adjustment, etc. The image was calibrated using 20 darks, 20 flats and 30 bias frames.

Comments

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Previous versions

Sep 15, 2007 - 1024 x 768 Pixel (330 kB)
Optics : GSO 8" f4 Newton + MPCC
Mount : Losmandy G-11 + Canon 350D
Exposure : 23 x 180 sec @ ISO1600 = 1h 9m

Oct 27, 2005 - 823 x 618 Pixel (173 kB)
Optics : Orion 80/600 ED + Baader UHC-S
Mount : OTE150 + Canon 350D
Exposure : 8 x 180 sec @ ISO800 = 24m