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Supernova PTF 11kly in Spiral Galaxy M101 (NGC 5457), type Sc, in Ursa Major

Details

Called the SN PTF11kly, the new Type Ia supernova was spotted by Caltech’s Palomar Transient Factory (PTF) survey in the M101, also known as the Pinwheel Galaxy. SN PTF11kly is located 21 million light years away. You can see the supernova marked in the southern part of the galaxy when move the mouse over it.

Messier 101 (Pinwheel Galaxy). Spiral Galaxy M101 (NGC 5457), type Sc, in Ursa Major

Right Ascension 14 : 03.2 (h:m)
Declination +54 : 21 (deg:m)
Distance 27 000 (kly)
Visual Brightness 7.9 (mag)
Apparent Dimension 22.0 (arc min)

Seeing: Fair - Pickering 6 rating
Optic(s): TL APO 90/600 @ f/6.7
Mount: ASA DDM 85 - operated by my friend Emil Ivanov
Camera: Artemis Art 4021 - monochrome CCD – 2048 x 2048 px ; 16x16 mm; 7.4 µm x 7.4 µm
Filters: Astronomics LRGB Set, SupaSlim TrueTechnology Computerized Filter Wheel
Dates/Times: 2011-08-27
Location: Rozhen Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exposure Details:

LRGB: L : 1x10 min (Bin 1), R, G and B: 1x10 min each of colours (Bin 2), Total ExposureTime - 40 min

More details: Dark calibrated
Guiding: SBIG STL-11000M internal sensor and 12" ASA Astrograph
Processing:

MaxIm DL / AIP4Win / PSCS5

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