the ISS Transits the Sun
I took this image on 2019 April 7th 13:24 at local time in Beijing, China with my Lunt 152T solar telescope, TV 2X barlow and ZWO ASI 174MM CCD.In the images, ISS was transitting sun. The duration of the transit is about 0.7 second. The distance of ISS is about 500 kilometers.In my image, there is a larger sunspot at downleft edge of the sun. It is AR 2738. Sunspots have not appeared on the surface of the sun for a long time.
Hydrogen Alpha Sun
I take this image on 2018 May 13th at about 2PM in Beijing China. As we know, sun has a solar cycle. The cycle is about 11 years. And this year in 2018, the sun is less active. That means the sun surface is clean usually, however, in my image, only a few solar prominence could be observed at the edge of the sun. I inversed the color of the sun surface.My equipment: Lunt 152T solar telescope, DMK 31 CCD
I take this image on 2018 April 15th at about 12 o'clock in Beijing China. The sun surface is clean, however, large solar prominence and details could be observed at the edge of the sun. I inversed the color of the sun surface.
Solar Filament with Sunspots
A large solar filament appeared several days across the sun. The region of sunspots AR 2096 and AR 2097 is very active. In addition, the region AR 2104 and AR 2107 at the left side is coming to face us, where has enormous power. This photo I took on June 28th 2014 with my Lunt 152T solar telescope, TV 2X barlow and BM-500GE CCD in the morning at Beijing China.
a Large Solar Flarebefore Eclipse
A large solar flare appeared just several hours before the hybrid solar eclipse on Nov 3rd 2013 between sunspots1884 and 1885. The flare is very bright, which looks appropriate because of HDR technology. I use three different exposure time pictures to compose one. The shape of flare changes very fast. The brightness of the flare changes in several minutes.This photo I took with my Lunt 152T solar telescope and DMK31 CCD at Beijing China.
Active Region AR11598 & AR11599
This is the sunspots I took pictures 2012 November 6th in Beijing China. My equipment is Lunt 152T solar telescope BF3400, TV2x barlow lens and DMK31 CCD.
This is the sun I took pictures on Oct 27th 2012 with my Lunt 152T solar telescope DMK31 CCD at Beijing，China. From the image, we know that the southern area of sun is more active.
The Path of Venus Transit
June 6th 2012, I drove more than 1200 kilometers away to find a clear day. Finally, the weather was so-so. There were much cloud at the beginning and the final period, but I got a high resolution picture of The Path of Venus Transit. I took this picture at Xi’an, a middle city in China. My equipment is Lunt152T telescope, MX mount and DMK31 CCD camera, TV 2x Barlow. After that I use Registax 6 and Photoshop CS4 compose all the pictures.
Wang Letian All Rights Reserved