2016/01/15

I detected a possible SNe candidate in PGC 2707944(2MASX J07163607+6753422). The object been put on TNS webpage as AT 2016M.

2015/10/31

Near Earth Asteroid 2015 TB145 is close-approaching to Earth. Photo by Zhen Chen, measure by me.

2015/08/27

Bright sungrazer comet, the birthday comet, best birthday present to me.

2015/08/19

I detected a possible SNe candidate in PGC 2027055. The object been put on Central Bureau's TOCP webpage as PSN J01101191+3313536. Tao Chen observed this object on 4 x 180-seconds exposures images using a luminance filter CCD ( + Mewlon 300 telescope D=300-mm @f/9.9 ) at Corona Borealis Observatory (N55) in Kunsha Town, Ngari, Tibet, China. Tao's image

2015/08/13

We observed  more than 100 Perseids meteors one night in Xuyi Observatory. More images: here

2015/08/07

The beautiful rainbow in Nanjing, and we can see the rainbow and the secondary rainbow in the sky.

2015/08/04

Comet C/2014 Q2 ( Lovejoy) close to the galaxy NGC 5907. Mouse-over to browse the mark of the galaxies.

2015/03/15

I detected a possible SNe candidate in PGC 9714. The object been put on Central Bureau's TOCP webpage as PSN J02330480+3530396. J.-J. Zhang, Y.-F. Fan, LiJiang Observatory, confirmed this object on one 90-s survey image (limiting mag about 20.0) taken by Yufeng Fan around Mar 17.5131 UT using a R-band CCD with 2.4-m telescope (+ YFOSC) at the LiJiang Observatory of YNAO. J.-J. Zhang's image

2014/10/11

I detected a possible SNe candidate in NGC 2536. The object been put on Central Bureau's TOCP webpage as PSN J08111645+2510474.

2014/09/07

GRB 140907A : Optical observations from Nanshan

2014/04/19

I detected a possible SNe candidate in UGC 4713. The object been put on Central Bureau's TOCP webpage as PSN J09002002+5229280.

2014/03/26

I detected a possible SNe candidate in NGC 2446. The object been put on Central Bureau's TOCP webpage as PSN J07484410+5436405.

2014/02/18

I discoverd my second STEREO comet in HI1B images in 20140214. Trygve Prestgard confirmed the object in Yahoo Groups. Reference: https://groups.yahoo.com/neo/groups/stereohunter/conversations/messages/2249

2013/11/26

Comet C/2012 S1 (ISON) & Comet 2P/Encke in STEREO HI1A images.

2013/11/16-17

We observed three comets in two nights at Xuyi, Jiangsu, China.

Comet C/2013 R1 (Lovejoy), Canon 60D and 400mm/f5.6 cropped, ISO 800, 7x1min exposures.

Comet C/2012 S1 (ISON), ZEQ25+65Q+Canon 60D cropped,ISO 800,55 x30s exposures.

Comet 2P/Encke

2013/08/31

I detected a possible SNe candidate in PGC 2194789. The object been put on Central Bureau's TOCP webpage as PSN J03043856+4213494. Spectrogram shows that the object is a type-Ia supernova a few days after explosion. The object is designated as SN 2013fi (CBET 3653 : 20130914 : SUPERNOVA 2013fi = PSN J03043856+4213494).

2013/08/12 to 13

We observed  more than 100 Perseids meteors one night.

2013/05/11

Comet L4 with a fireball meteor and we can also see M31 in the lower right corner, Canon 60D, 18mm/f3.5, ISO 800, 5x120s, cropped image.The photo was taken by me at Xuyi, Jiangsu, China. May 11, 2013