vkastronomy.com - Astrophotography Weblog
M100 and SN2006X
22:26 25/2/2006 UTC
< Previous Next > My first ever picture of supernova! I have terrible light pollution south in the altitudes M100 climbs. Despite quite good transparency I could only expose 90s subs, so the galaxy is a bit noisy. I also screwed up the flats somehow so they actually increased noise level. However I was amazed I could even resolve it as very round well defined exploding star using only 400mm of focal length. This image is 100% crop of the original. There are several fuzzies visible in the original frame. There's even two of them in this small crop, NGC4312 in the lower right corner and NGC 4328 to the left of M100. I used IRIS and Hubble Guide Star Catalog to estimate the supernova brightness and location from the green channel image. Pretty close to the
official numbers
with very moderate equipment!
MAGNITUDE = 13.501
RA: 12h 22m 53.931s DEC: +15° 48' 34.52"
NGC/IC Object List:
NGC4321 galaxy RA:12h22m54.9 Dec:+15°49m'22" BMag:10.1, M 100
NGC4328 galaxy RA:12h23m20.0 Dec:+15°49m'13" BMag:14.3, MCG 3-32-19
NGC4312 galaxy RA:12h22m31.4 Dec:+15°32m'17" BMag:12.6, UGC 7442
Camera: Canon EOS 350D (Rebel XT) | Telescope: William Optics Zenithstar 66mm f6 petzval refractor | Mount: Orion Skyview Pro, Boxdoerfer PowerFlex MTS-3SLP drive controller | Filters: - | Guiding: Orion ShortTube 80mm f5 refractor, QCGuider, Phillips ToUCam Pro II webcam | Exposure: 36 x 90s (54m) f6 ISO800, 6 darks, 5 flats | Software: IRIS, GIMP | Location: 60°31'N 26°52'E (Koivula/Kotka,FI) | Seeing: IV | Transparency: 3 | Target altitude in the beginning of the exposure 41°
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Added: 15:50 28/2/2006 UTC
