Image	Nova Sagittarii 2009 Number 3
Time	2009/08/15 15:06:19 UTC - 15:09:04 UTC
Place	Taishan, Jiangmen, Guangdong Province, China
Optics	Canon EF 70-200mm f/2.8 L USM set to 200mm, f/2.8
Camera	Canon EOS 350D (ISO 800)
Exposure	4.5 s x 19 frames
Processing	19 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted and flatfiled frames divided; fixed with Fitswork 3.93 and Photoshop CS3 Extended to remove the star-trails; 0.5x reduced;
Comments	P.A. of up of the image about 32.69 deg; limiting magnitude about 16.6; city light pollution;

 

The nova was discovered independently by Koichi Nishiyama, Kurume, Fukuoka-ken, Japan, and Fujio Kabashima, Miyaki-cho, Saga-ken, Japan, and Grzegorz Pojmanski, Dorota Szczygiel, and Bogumil Pilecki from Warsaw University Astronomical Observatory, Poland on Aug 6.494 UT, Aug 6.495 UT, and Aug 6.182 UT respectively. Details c.f. AAVSO Alert Notice 400.

Astrometry and photometry was done with the original size image in PIXY System 2 by myself:

R.A. = 18h07m07s.99, Dec. = -33°46'33".3 (J2000), Mag. = 9.71

AAVSO Table:

Name

JD

Calendar Date

Mag.

Band

Comment Codes

Observer

Comparison Star 1 (CName)

Comparison Star 2 (KName)

Chart(s)

Uncertainty

Trans- formed

Comments

N SGR 2009 NO. 3

2455059.1299

AUG 15.6299

9.71

N/A

B

XWE

TYC 7395-2135

TYC 7400-1030

1294dke

N

TOTALLY 7 COMP. STARS USED; CANON EF 70-200MM F/2.8 + CANON 350D

 

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