Tuesday, December 27, 2016

20161227 Sun

Cold front coming, seeing exceptionally poor from 0-2/10 at best... cannot properly focus.

0604 (UT) with a reducer, some nice filaments around but cannot go any higher power.

Monday, December 19, 2016

20161219 Sun

We finally have a small active region (AR2619) today!

Here is a 5x shot with a reducer (forgot to remove), note the dust on the CMOS, 0701 (UT):-

And now the full disc, 0655 (UT):-

Friday, December 16, 2016

20161216 Sun

Very poor seeing due to the cold front, no detail even with reducer:

0702 (UT), just a record.

Tuesday, December 13, 2016

20161213 Sun

Another day, my elder daughter was still sick at home, and I stayed with her.

1359 (GMT+8).

Sun 20161212

Another imaging session, but the sun was not very active so I only took the following full disc shot with my Ranger + reducer lens.

Gain was set to zero this time, 1338 (GMT+8):-

Saturday, December 10, 2016

20161128 Sun

I don't know if this is the first time for me to use the ASI120mm, I had one before but sold shortly, this one was newly acquired.

First one taken with my Ranger with a reducer lens, 1245 (GMT+8):-

Second one with a 3x barlows, 2 frames mosaic... uneven illumination, long time no practice, taken at 1253 and 1255 (GMT+8).:-

After taking the images, I found that I didn't set the gain to zero and it was set at 50% which is very high.  No wonder why the result image is rather noisy.

I found no more Newton's ring even at 3x?