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M 51 (NGC 5194) - Whirlpool Galaxy - with companion galaxy NGC 5195

15.06.2009

It was a test with a very short exposure time. - North is top, East is right

M 51 - 21 fr. x 30 sec. ISO 1600, calibrated and combined as B/W in MaxIm DL

 

M 51 - 15 fr. x 30 sec. ISO 1600, calibrated and combined in ImagePlus

Details

M51 (NGC 5194) - Whirlpool Galaxy - Spiral Galaxy, type Sc

Right Ascension 13 : 29.9 (h:m)
Declination +47 : 12 (deg:m)
Distance 37 000 (Kly)
Visual Brightness 8.4 (mag)
Apparent Dimension 11 x 7 (arc min)

Optic(s) Celestron 11" Schmidt Cassegrain @ f/10
Mount: CGE equatorial
Camera: Canon EOS 5D unmodified
Filters: None
Dates/Times: 2009-06-15 T 00:39:04 UT
Location: Observatory Rozhen (BAS) - Rhodope Mountains
Exposure Details:

B/W: Total exposure 10.5 min - all 21 fr. x 30 sec. ISO 1600, calibrated and combined as B/W in MaxIm DL;

Color: Total exposure 7.5 min - the best 15 RAW frames ISO 1600, calibrated and combined in ImagePlus

More details: 20 Bias and 20 Dark frames calibrated
Guiding: None
Processing:

B/W: MaxIm DL / PSCS2

Color: ImagePlus / PSCS2

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All Contents copyright Velimir Popov unless otherwise noted.