| Lens/telescope : |
Nikon 50mm f/1.4 (set to f/2.0) |
| Corrector/Barlow : | none |
| Field (FOV) : | 12x12 degree, before cropping |
| Filter : | Red=25, Green=58 and Blue=47B filter |
| Camera : |
SpectraSource Instruments HPC-1, CCD 1024x1024
Camera from Stockholm University |
| Exp. time : | red 74x15s, green 74x20s, blue 74x30s, 3x8x8 dark, 3x8 flat+3x8x8 dark.
Small drift under exposures (see the edges) to get rid of those bad pixels, no IR-filter.
Photos taken under two separate nights. |
| Image process tool : | Matlab, All image processing done by my own developed Matlab routines. |
| Processing : |
resize, level, cal dark.
Image color calibrated with G2-stars as references (our sun is a G2-star). |
| Weather : | clouds |
| Site : | Sweden Midsommarkransen 4:th floor. Bortle class 9 |
| Comment : |
This is my very very first digital deep sky photo.
A lot of galaxies can be seen, those galaxies with a lot of dust is colored purple because the lack of a blocking Infra red filter, dust radiate in IR. |
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